| 1. |
- Johnsson, Anna-Ida, et al.
(author)
-
Specific SCAR markers and multiplex real-time PCR for quantification of two Trichoderma biocontrol strains in environmental samples
- 2011
-
In: BioControl. - : Springer Science and Business Media LLC. - 1386-6141 .- 1573-8248. ; 56, s. 903-913
-
Journal article (peer-reviewed)abstract
- Several strains from the genus Trichoderma (Ascomycetes, Hypocreales) are commercially used as biocontrol agents, e.g. in formulations containing the two Trichoderma strains IMI206039 (Hypocrea parapilulifera B.S. Lu, Druzhinina & Samuels) and IMI206040 (T. atroviride P. Karst). To quantify the presence of the two isolates after application, we developed primers for SCAR markers (Sequence-Characterised Amplified Region). In order to quantify both fungal strains simultaneously, we also designed fluorophore-labelled probes distinguishing the two strains, to be used in combination with the SCAR primers. In incubations of two different soils, artificially inoculated and maintained under controlled conditions, the quantification through amplification with the SCAR markers in qPCR and through colony-forming units from plate counting correlated well. Further tests of the markers on samples taken from a golf green treated with a product containing both strains indicated that the two biocontrol strains did not establish, either on the golf green or in the surrounding area.
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| 2. |
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| 3. |
- Von Rosen, Dietrich
(author)
-
Non-negative estimation of variance components in heteroscedastic one-way random-effects ANOVA models
- 2010
-
In: Statistics. - : Informa UK Limited. - 0233-1888 .- 1029-4910. ; 44, s. 557-569
-
Journal article (peer-reviewed)abstract
- There is a considerable amount of literature dealing with inference about the parameters in a heteroscedastic one-way random-effects ANOVA model. In this paper, we primarily address the problem of improved quadratic estimation of the random-effect variance component. It turns out that such estimators with a smaller mean squared error compared with some standard unbiased quadratic estimators exist under quite general conditions. Improved estimators of the error variance components are also established.
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| 4. |
- Röös, Elin, et al.
(author)
-
Diagnostic, regenerative or fossil-free - exploring stakeholder perceptions of Swedish food system sustainability
- 2023
-
In: Ecological Economics. - : Elsevier B.V.. - 0921-8009 .- 1873-6106. ; 203
-
Journal article (peer-reviewed)abstract
- In an analysis of food system sustainability challenges and solutions among Swedish food system actors using Q-methodology, five perspectives were identified. One of the main three perspectives placed the highest priority on reduced meat consumption, food waste, and climate impact in agriculture, but downplayed strategies highlighted in the national food strategy and social aspects, and can be interpreted as a diagnostic climate mitigation-oriented perspective that does not reflect current negotiated policy processes or ‘softer’ values of food. In an alternative regenerative perspective, industrialized large-scale farming and lack of internalization of external costs were regarded as the main problems, and diversity, soil health, and organic farming as the main solutions. Proponents of a third perspective regarded phasing out fossil fuels, increased profitability of companies, increased meat production, and self-sufficiency as high priorities. These contrasting views can be a major barrier to transforming the Swedish food system. However, a number of entry points for change (i.e. aspects highly important for some and neutral for others) were identified, including focusing on healthy diets and increased production of fruit and vegetables. Focusing on these can build trust among stakeholders before moving to discussions about the larger and more sensitive systemic changes needed. © 2022 The Authors
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| 5. |
-
Bulletin of Geography. Socio-Economic Series (Volume 40)
- 2018
-
In: Bulletin of Geography. Socio-Economic Series (De Gruyter). - 1732-4254 .- 1732-4254. ; 40:40, s. 1-196
-
Other publication (other academic/artistic)abstract
- This 40th anniversary issue of BGSS highlights some of the tenets of the complexity that make sustainability a ‘wicked problem’ through a number of different perspectives, many of which have to date been pushed into the background amidst an otherwise exceptionally rich geographical literature on sustainability. The editorial task included procurement, administration and scientific processing of 12 articles from 25 authors as follows: (1) Mirek Dymitrow, Keith Halfacree – “Sustainability–differently”; (2) Slobodan Arsovski, Michał Kwiatkowski, Aleksandra Lewandowska, Dimitrinka Jordanova Peshevska, Emilija Sofeska, Mirek Dymitrow – “Can urban environmental problems be overcome? The case of Skopje—world’s most polluted city”; (3) Janis Birkeland – “Challenging policy barriers in sustainable urban design”; (4) Elizabeth Dessie – “Applying resilience thinking to ‘ordinary’ cities: A theoretical inquiry”; (5) Madeleine Eriksson, Aina Tollefsen – “The production of the rural landscape and its labour: The development of supply chain capitalism in the Swedish berry industry”; (6) Stina Hansson – “The role of trust in shaping urban planning in local communities: The case of Hammarkullen, Sweden”; (7) Shelley Kotze – “The place of community values within community-based conservation: The case of Driftsands Nature Reserve, Cape Town”; (8) Davide Marino, Luigi Mastronardi, Agostino Giannelli, Vincenzo Giaccio, Giampiero Mazzocchi – “Territorialisation dynamics for Italian farms adhering to Alternative Food Networks”; (9) E. Gunilla Almered Olsson – “Urban food systems as vehicles for sustainability transitions”; (10) George Mark Onyango – “Urban public transport in informal settlements: Experiences from Kisumu City, Kenya”; (11) Christian M. Rogerson – “Informality and migrant entrepreneurs in Cape Town’s inner city”; (12) Marcin Wójcik, Karolina Dmochowska-Dudek, Pamela Jeziorska-Biel, Paulina Tobiasz-Lis – “Understanding strategies for overcoming peripherality: A Polish experience of transition”. The articles have been reviewed by a cadre of 40 reviewers from 34 academic institutions across 14 countries.
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| 6. |
- Almered Olsson, Gunilla, 1951, et al.
(author)
-
Food systems sustainability - For whom and by whom? : An examination of different 'food system change' viewpoints
- 2018
-
In: Development Research Conference 2018: “Rethinking development”, 22–23 August 2018, Gothenburg, Sweden.
-
Conference paper (peer-reviewed)abstract
- The United Nations identifies the food crisis as one of the primary overarching challenges facing the international community. Different stakeholders in the food system have widely different perspectives and interests, and challenging structural issues, such as the power differentials among them, remain largely unexamined. These challenges make rational discourse among food system actors from different disciplines, sectors and levels difficult. These challenges can often prevent them from working together effectively to find innovative ways to respond to food security challenges. This means that finding solutions to intractable and stuck issues, such as the food crisis often stall, not at implementation, but at the point of problem identification. Food system sustainability means very different things to different food system actors. These differences in no way undermine or discount the work carried out by these players. However, making these differences explicit is an essential activity that would serve to deepen theoretical and normative project outcomes. Would the impact and reach of different food projects differ if these differences were made explicit? The purpose of this initial part of a wider food system research project is not to search for difference or divergence, with the aim of critique, but rather to argue that by making these differences explicit, the overall food system project engagement will be made more robust, more inclusive and more encompassing. This paper starts with some discussion on the different food system perspectives, across scales, regions and sectors but focuses primarily on the design of processes used to understand these divergent and at times contradictory views of what a sustainable food system may be. This paper draws on ongoing work within the Mistra Urban Futures project, using the food system projects in cities as diverse as Cape Town, Manchester, Gothenburg and Kisumu as sites for this enquiry.
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| 7. |
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| 8. |
- Marklinder, Ingela, et al.
(author)
-
Food safety knowledge, sources thereof and self-reported behaviour among university students in Sweden
- 2020
-
In: Food Control. - : Elsevier. - 0956-7135 .- 1873-7129. ; 113
-
Journal article (peer-reviewed)abstract
- International studies have noted shortcomings in food safety knowledge and behaviour among university students. In general students do not constitute a pronounced risk group but there are wider implications. In a foreseeable future some of them will become pregnant and a majority will be responsible for vulnerable groups in their near environment. A crucial question exists, therefore, about their food safety knowledge and safe food handling practices. The aim of this study is to investigate food safety knowledge, sources thereof and self-reported food safety behavior among university students in Sweden. A quantitative study design using a web-based questionnaire was chosen as the data collection method. The questionnaire was distributed through social media and e-mail. Among the 606 respondents from 24 Swedish universities 80% were 18-30 years and 78% were women. The average number of correct answers on the knowledge questions was 7.61 out of 12 (63.4%). The foremost source of food safety knowledge was "Family and friends" (45%). Just 21.1% reported Food safety education as a source, although 35.6% had experience of a course in food hygiene/safety and/or microbiology. Respondents who reported "Family and friends" to be the foremost food safety source of knowledge also got a significantly lower rate of correct answers. Students who estimated their food safety knowledge to be good also had more correct answers. Experience of food safety education at secondary school/university/working place/polytechnic school significantly correlated with more correct answers on the knowledge questions and indicated a safer self-reported behaviour. Those with fewer correct answers also reported more unfavourable behaviours. The present study indicates that education promotes more optimal behaviors. The authors would suggest a more systematic food safety education at younger ages.
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| 9. |
- Skovsgaard, Jens Peter
(author)
-
Bog om tarmvridrøn
- 2013
-
In: Skoven. - 0106-8539. ; 45, s. 551-551
-
Other publication (other academic/artistic)abstract
- Book review N. Mayer & R.T. Klumpp (ed.) 2013: Elsbeere in Österreich – Monographie. Verein zur Erhaltung, Pflege und Vermarktung der Elsbeere - Genussregion Wiesenwienerwald Elsbeere, Michelbach.
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| 10. |
- Dymitrow, Mirek, et al.
(author)
-
Nutrition, health and climate: What have we learned so far?
- 2019
-
In: Conference on Food Science and Nutrition: “Forum for food science and nutrition for a better tomorrow”, 25–26 February 2019, Rome, Italy.
-
Conference paper (peer-reviewed)abstract
- Food and meals are central elements in our lives: a source of pleasure, a social activity and a bearer of culture. Our eating habits are also very important to health, which implies that the organization and content of meals is a prerequisite for well-being and learning. Schools, in particular, have unique opportunities to promote healthy lifestyles, help develop good eating habits and raise environmental and climate awareness among children and youths by embedding food in a wider context. Unsurprisingly, there is also an increasing interest in school meals and food-related education among researchers, many of whom agree that the quality of school meals can be seen as one of the most accurate indicators of the cities’ sustainability potential. Systematic quality work, however, requires shared targets and ambitions, regular quality checks and discussions on development and improvement. In that vein, the City of Gothenburg has launched the project Urban Rural Gothenburg, which assembles, develops, tests and implements new solutions for the city’s public kitchens. This involves climate-smart and environmentally sound perspectives and programs regarding meal planning, food procurement, food preparation and food-related teaching and learning. One important approach deals with the normalization of increased vegetarian consumption and greater awareness of food’s origins and travel from farm to table. Another approach deals with conscious choices of raw materials that are beneficial for both the environment and health. A third notable approach focuses on new ways of handling food waste to reduce climate impact. In line with the third Sustainable Development Goal, this presentation captures and reaffirms the fundamental assumptions and methods involved in Gothenburg’s work with food sustainability in public kitchens, with an emphasis on health and climate as cross-cutting issues that matter to us all.
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| 11. |
- Messing, Ingmar
(author)
-
Land and land use : Natural preconditions
- 2011
-
In: Agriculture and Forestry in Sweden since 1900- a cartographic description. - 9789187760617 ; , s. 14-22
-
Book chapter (other academic/artistic)
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| 12. |
- Messing, Ingmar
(author)
-
Marken i Sverige : Naturliga förutsättningar
- 2011
-
In: Sveriges nationalatlas. Jordbruk och skogsbruk i Sverige sedan år 1900: en kartografisk beskrivning. - 9789187760594 ; , s. 14-22
-
Book chapter (other academic/artistic)
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| 13. |
- Tunon, Håkan, et al.
(author)
-
Kulturarv och hållbar utveckling
- 2010
-
In: Bebyggelsehistorisk tidskrift. - : Föreningen Bebyggelsehistorisk tidskrift. - 0349-2834 .- 2002-3812. ; , s. 99–106-
-
Journal article (other academic/artistic)
|
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| 14. |
|
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| 15. |
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| 16. |
|
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| 17. |
- Thulin, Carl-Gustaf
(author)
-
Utsättning av arter : möjlighet för bevarandebiologin
- 2010
-
In: Biodiverse. - 1401-5064. ; 15, s. 8-9
-
Journal article (pop. science, debate, etc.)abstract
- Ett halvöppet, lövträdsdominerat landskap med betande hjortdjur, visenter, förvildad nötboskap och vildsvin, jagade av livskraftiga populationer av varg, björn och lo. Utopier och vilda fantasier? Kanske i delar, men något håller definitivt på att hända med bevarandet, återskapandet och skötseln av de europeiska vildmarkerna
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| 18. |
|
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| 19. |
|
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| 20. |
- Magnusson, Kristina, et al.
(author)
-
Food and climate as part of public kitchens' sustainability work
- 2018
-
In: Chalmers Sustainability Day Conference: “Good Health and Well-being”, Chalmers University of Technology, Session “Loin, larvae or lentils – On eating for health and climate”, 23 October 2018, Gothenburg, Sweden.
-
Conference paper (peer-reviewed)abstract
- Food and meals are central elements in our lives: a source of pleasure, a social activity and a bearer of culture. Our eating habits are also very important to health, which implies that the organization and content of meals is a prerequisite for well-being and learning. Schools, in particular, have unique opportunities to promote healthy lifestyles, help develop good eating habits and raise environmental and climate awareness among children and youths by embedding food in a wider context. Unsurprisingly, there is also an increasing interest in school meals and food-related education among researchers, many of whom agree that the quality of school meals can be seen as one of the most accurate indicators of the cities’ sustainability potential. Systematic quality work, however, requires shared targets and ambitions, regular quality checks and discussions on development and improvement. In that vein, the City of Gothenburg has launched the project Urban Rural Gothenburg, which assembles, develops, tests and implements new solutions for the city’s public kitchens. This involves climate-smart and environmentally sound perspectives and programs regarding meal planning, food procurement, food preparation and food-related teaching and learning (e.g. “Lärande Hållbara Måltider”, “Mindre Matsvinn”, “Pedagogiska Odlingsträdgårdar”). One important approach deals with the normalization of increased vegetarian consumption and greater awareness of food’s origins and travel from farm to table. Another approach deals with conscious choices of raw materials that are beneficial for both the environment and health. A third notable approach focuses on new ways of handling food waste to reduce climate impact. In line with the third Sustainable Development Goal, this presentation captures and reaffirms the fundamental assumptions and methods involved in Gothenburg's work with food sustainability in public kitchens, with an emphasis on health and climate as cross-cutting issues that matter to us all.
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| 21. |
- Norman, Johan
(author)
-
Skogen – en plats för upplevelser
- 2011
-
In: Grön Entreprenör, Naturupplevelse och hälsa – forskningen visar vägen. - 9789157690364 ; , s. 62-75
-
Book chapter (pop. science, debate, etc.)
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| 22. |
- Haysom, Gareth, et al.
(author)
-
Food systems sustainability: An examination of different viewpoints on food system change
- 2019
-
In: Sustainability. - : MDPI AG. - 2071-1050. ; 11:12
-
Journal article (peer-reviewed)abstract
- Global food insecurity levels remain stubbornly high. One of the surest ways to grasp the scale and consequence of global inequality is through a food systems lens. In a predominantly urban world, urban food systems present a useful lens to engage a wide variety of urban (and global) challenges—so called ‘wicked problems.’ This paper describes a collaborative research project between four urban food system research units, two European and two African. The project purpose was to seek out solutions to what lay between, across and within the different approaches applied in the understanding of each city’s food system challenges. Contextual differences and immediate (perceived) needs resulted in very different views on the nature of the challenge and the solutions required. Value positions of individuals and their disciplinary “enclaves” presented further boundaries. The paper argues that finding consensus provides false solutions. Rather the identification of novel approaches to such wicked problems is contingent of these differences being brought to the fore, being part of the conversation, as devices through which common positions can be discovered, where spaces are created for the realisation of new perspectives, but also, where difference is celebrated as opposed to censored.
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| 23. |
- Isemo, Sanna, et al.
(author)
-
Urban food revisited: Green business development through co-creation
- 2018
-
In: Thinkfood, Thinkpoint Innovation Arena, 15–16 September 2018, Gothenburg, Sweden.
-
Conference paper (other academic/artistic)abstract
- The ongoing urbanization and globalization of food products is challenging food and nutrition security for urban and rural areas. Dependence on the global food supply chain also increases vulnerability and implies risks for cities and their wider regions. An important way to address these challenges is by examining the relationship between cities and their surroundings through a focus on food. Embracing theses insights, Urban Rural Gothenburg is an EU-sponsored project that tests low-carbon approaches and links them to food production, logistics, tourism, and new business models. Through promoting cooperation between the city, the business sector, residents, civil society and academia, Urban Rural Gothenburg aims to contribute to the fulfilment of the city’s wider sustainability goals, as set in 2017. These span the holistic frame of sustainability to involve, for example, combining innovations for social improvement with reduction of the city’s environmental and climate impact, promoting a sustainable Gothenburg with global and locally equitable emissions. Research Forum Urban Rural Gothenburg (RFURG) constitutes the academic component of the ‘Urban Rural Gothenburg’. Departing from co-creative methodology (the so-called penta-helix model), RFURG provides the research community with advice, support, consultancy, networks and a communication platform with the purpose to initiate and implement research endeavours related to the project’s objectives. Another important task is to ascertain that the activities within the project are scientifically sound through constant monitoring of national and international calls that may be of interest for the project. Compilation and dissemination of results through recurring conferences, seminars, workshops and special issues in scientific journals form indispensable steps towards that goal. And while Urban Rural Gothenburg is only one amongst a flurry of intrepid projects globally trying to think outside the box, it manages to capture and epitomise the character of several recurring problems haunting our society today and, arguably, progress within it.
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| 24. |
- Stedt, Kristoffer, 1991, et al.
(author)
-
Post-harvest cultivation with seafood process waters improves protein levels of Ulva fenestrata while retaining important food sensory attributes
- 2022
-
In: Frontiers in Marine Science. - : Frontiers Media SA. - 2296-7745.
-
Journal article (peer-reviewed)abstract
- Seaweed aquaculture can provide the growing human population with a sustainable source of proteins. Sea-based cultivation is an effective method for farming seaweeds on a large scale and can yield high biomass output. However, the quality and biochemical composition of the biomass is seasonally dependent, which limits the harvests to certain periods of the year. Here we show the possibility to extend the sea-based cultivation season of Ulva fenestrata when aiming for high protein levels, by post-harvest treatment in herring production process waters. We harvested U. fenestrata at an optimal period in terms of yield, but suboptimal in terms of protein content. We then cultivated the seaweed in onshore tank systems with the nutrient-rich process waters for 14 days. We monitored biomass yield, crude protein content, amino acid composition, and content of the health concerning metals arsenic, mercury, lead, and cadmium, as well as the sensory properties of the dried biomass. After cultivation in the process waters, biomass yields were 30 - 40% higher (210 – 230 g fresh weight) compared to in seawater (160 g fresh weight). Also, the crude protein and amino acid content increased three to five times in the process waters, reaching 12 - 17 and 15 – 21% dry weight, respectively. The protein enriched biomass followed food graded standards for heavy metal content, and consumption of the biomass does not exceed health based reference points. Additionally, no sensory attributes regarded as negative were found. This rapid, post-harvest treatment can help extend the cultivation season of sea-based seaweed farms, maximizing their output of sustainable proteins.
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| 25. |
- Beier, Ulrika, et al.
(author)
-
Fisk och fiske i Mälaren
- 2015
-
Reports (pop. science, debate, etc.)abstract
- Nära en tredjedel av Sveriges befolkning bor i Mälardalen. Mälaren är Sveriges tredje största sjö och en av de artrikaste beträffande fisk. Sjön är både flikig och mångsidig. Ömsom kantas den av slätter med intensivt jordbruk och stora vassområden, ömsom av karga klippor och grusstränder. Här finns omväxlande små och stora öar, grunda vikar, trånga sund och stora, djupa fjärdar. Mälaren har förorenats under århundraden och är fortfarande delvis övergödd. Trots det tjänar den som landets största dricksvattentäkt. Två miljoner människor får dricksvatten från Mälaren. Länge har fokus varit på sjöns vattenkvalitet, både för att dricka och bada i. Mälaren är också viktig som fiskesjö. Fiske i Mälaren innebär oftast rekreation men sjön försörjer också cirka trettio yrkesfiskare. Sist men inte minst - fisken i Mälaren är en viktig del i dess ekosystem. Genom näringsväven återkopplar fisken oundvikligen till vattnets kvalitet. I den här rapporten vill vi sätta Mälarens fisk i fokus. Vi ska berätta om fiskarter som är viktiga för ekosystemet och fisket samt om hur fisken i Mälaren undersöks.
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| 26. |
- Abu Hatab, Assem, et al.
(author)
-
COVID-19 risk perception and food security in the MENA region: evidence from a multi-wave household survey
- 2024
-
In: Food Security. - : Springer Nature. - 1876-4517 .- 1876-4525. ; 16, s. 989-1008
-
Journal article (peer-reviewed)abstract
- The COVID-19 pandemic had disruptive consequences for MENA countries’ agri-food value chains that exacerbated poverty and jeopardized food security. This study examines the relationship between individuals’ perception of contracting COVID-19 and their experience of food insecurity, using longitudinal data from the Combined COVID-19 MENA Monitor Household survey. It also investigates the underlying mechanisms of COVID-19 concerns and explores coping strategies employed by households to identify vulnerabilities in food security. The results provide compelling evidence of a strong association between individuals’ concern about the virus and various dimensions of food security, particularly reduced purchasing power and decreased meal frequency. Notably, this association follows an inverted U-shaped curve, with food insecurity initially increasing as worry grows, but declining after individuals contract the virus. High levels of concern were also linked to significant income decreases and worsening economic conditions. Moreover, individuals with higher concerns were more likely to rely on specific coping strategies, particularly spending savings and obtaining funds from relatives or friends. These findings underscore the need for government interventions during disease outbreaks and economic downturns to focus on alleviating individuals’ worry and fear to facilitate informed decision-making that minimizes food insecurity consequences. Additionally, the findings emphasize the need to strengthen social protection systems during public health and economic challenges to ensure food security for vulnerable populations.
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| 27. |
- González García-Mon, Blanca, 1993-
(author)
-
Harvesting from land and sea : Social relationships, trade networks, and spatial connectivity in changing social-ecological systems
- 2022
-
Doctoral thesis (other academic/artistic)abstract
- In the era of global change, the connectivity of aquatic and terrestrial food production systems across spatial scales is increasing. At the same time, diverse actors that participate in food systems, from production to consumption, face the need to adapt their daily activities to an increasingly changing context. This thesis aims to better understand actors’ responses to social or environmental changes in food systems that are characterized by their cross-scale dynamics and social-ecological interactions. The four papers that constitute this thesis address this overarching aim by investigating two processes that are important in responding to changes and creating spatial connectivity between geographical locations: trade (Papers I-III), and spatial diversification or actor’s geographical mobility (Paper IV). The papers analyze fisheries and agricultural systems in Mexico and South Africa, using interview-based data collection and analysis, network analysis, agent-based modeling, and combinations of these methods. Papers I-III specifically examine how trade networks, which are embedded in social relationships and networks that operate across spatial scales, can influence the responses of food system actors to multiple types of changes. Paper I shows that trade relationships across fisheries and agricultural systems are generally embedded in stable business relationships characterized by reciprocity. Paper II finds that different trade network structures in a multi-species Mexican fishery can buffer changes in fish availability and create cascading effects between different species and geographical regions. Paper III describes four types of social networks consisting of relationships within and across scales that enable responding to multiple types of changes in a South African agricultural trade network. Paper IV identifies potential factors, such as environmental changes, that could influence changes in fisheries actors’ spatial diversification observed in Mexico. The thesis contributes to social-ecological systems research with theoretical insights regarding the embeddedness of trade networks in multidimensional social relationships within and across scales, where diverse types of social relationships and networks can influence fishing and farming practices. In addition, it highlights that spatial and temporal heterogeneity can have a key role in responses to changes based on spatial connectivity. Finally, the mixed-method methodology applied in this thesis enables simultaneously analyzing networks and processes in social-ecological systems, while illustrating the challenges and opportunities of method integration.
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| 28. |
- Olstorpe, Matilda, et al.
(author)
-
Microbial changes during storage of moist crimped cereal barley grain under Swedish farm conditions
- 2010
-
In: Animal Feed Science and Technology. - Amsterdam, Netherlands : Elsevier. - 0377-8401 .- 1873-2216. ; 156:1-2, s. 37-46
-
Journal article (peer-reviewed)abstract
- This Study investigated feed hygiene during airtight storage of non-dried barley grain under farm conditions. Microorganisms on the grain were sampled and quantified in seven Swedish firms throughout the storage period using culture dependent methods. The dominant lactic acid bacteria (LAB) and yeasts were identified by rRNA gene sequencing and moulds by morphological characterisation. Moisture content (MC) and pH of the grain were also monitored. It was difficult to obtain the optimal MC(0.30-0.45 g/g) that is necessary to initiate fermentation in the grain. Feed hygiene was maintained during storage of cereals when MC below 0.17 g/g. Intermediate MC (0.17-0.23 g/g) of the grains was conducive to mould growth, including growth of potential producers of mycotoxins, which can diminish feed safety and nutritional value. Enterobacteriaceae were found in all barleys, even at low MC, but their numbers were substantially decreased when the number of LAB was high. True fermentation of moist crimped cereal grains was only obtained on one farm with all initial barley MC of 0.3 g/g. Here, LAB reached high numbers during storage, whereas numbers of spoilage microorganisms that may reduce feed hygiene decreased considerably. However, the pH of the barley did not differ among farms. Storage stability in airtight stored barley may thus be the result of low oxygen tension, viz. airtight storage, and competition for nutrients by the microorganisms, rather than formation of lactic acid. At harvest, Enterococcus caccae dominated the LAB Population in five barleys and Lactobacillus fermentum at the remaining two. The dominant yeast species were Aureobasidium pullulans, Cryptococcus wieringae, Kazachstania aerobia and Rhodotorula glutinis. After storage, L fermentum was dominant among the LAB. The yeast species composition was highly diverse and differed among barleys. Among others, C. wieringae, Debaryomyces hansenii, K. aerobia, R. glutinis and Sporobolomyces ruberrimus were detected. This Study shows that the microbial population in airtight stored moist barley is highly diverse and not predictable. Thus, it may be necessary to influence the microbial population in the storage system by adding a starter culture.
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| 29. |
- Olstorpe, Matilda, et al.
(author)
-
Pichia anomala yeast improves feed hygiene during storage of moist crimped barley grain under Swedish farm conditions
- 2010
-
In: Animal Feed Science and Technology. - Amsterdam, Netherlands : Elsevier BV. - 0377-8401 .- 1873-2216. ; 156, s. 47-56
-
Journal article (peer-reviewed)abstract
- Preservation of moist crimped cereal grain is made feasible through fermentation by lactic acid bacteria. Climatic variations make it difficult to harvest at moisture contents (0.30-0.45g/g) to support optimal fermentation under practical conditions. Therefore, the yeast, Pichia anomala J121, previously found to prevent mould spoilage and improve preservation of moist grain in malfunctioning airtight silos, was added to moist crimped cereal grain stored in large plastic tubes. Freshly harvested barley grain was crimped and inoculated with P. anomala (105 colony-forming units/g grain). Due to the local weather conditions, harvest was delayed and moisture content in the cereal grain had decreased to 0.16-0.18g/g. P. anomala was inoculated into three batches of barley, each comprising 16tonnes packed into large plastic tubes. Three additional sets of plastic tubes were packed with cereal grain without addition of P. anomala. The grain tubes were left closed for 5 months, after which feeding to cattle commenced. In both the P. anomala inoculated and the control barley, the population diversity of lactic acid bacteria (LAB) was very high over the duration of storage. However, the dominant LAB shifted over the course of storage to Pediococcus pentosaceus and Lactobacillus paracasei, in inoculated and control barley, respectively. The yeast population in the inoculated barley was totally dominated by P. anomala during the entire storage period. In the control grain, the yeast population was more diverse, displaying shifts in the dominant species during storage. Pichia burtonii was the dominant species at the last sampling occasion. In P. anomala inoculated barley, numbers of naturally occurring moulds were reduced by about two log units, and the number of Enterobacteriaceae was reduced to below detection.
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| 30. |
- Trigo, João Pedro, 1995, et al.
(author)
-
Mild blanching prior to pH-shift processing of Saccharina latissima retains protein extraction yields and amino acid levels of extracts while minimizing iodine content
- 2023
-
In: Food Chemistry. - : Elsevier BV. - 0308-8146 .- 1873-7072. ; 404
-
Journal article (peer-reviewed)abstract
- The seaweed Saccharina latissima is often blanched to lower iodine levels, however, it is not known how blanching affects protein extraction. We assessed the effect of blanching or soaking (80/45/12 °C, 2 min) on protein yield and protein extract characteristics after pH-shift processing of S. latissima. Average protein yields and extract amino acid levels ranked treatments as follows: blanching-45 °C ∼ control > soaking ∼ blanching-80 °C. Although blanching-45 °C decreased protein solubilization yield at pH 12, it increased isoelectric protein precipitation yield at pH 2 (p < 0.05). The former could be explained by a higher ratio of large peptides/proteins in the blanched biomass as shown by HP-SEC, whereas the latter by blanching-induced lowering of ionic strength, as verified by a dialysis model. Moreover, blanching-45 °C yielded a protein extract with 49 % less iodine compared with the control extract. We recommend blanching-45 °C since it is effective at removing iodine and does not compromise total protein extraction yield.
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| 31. |
- Gisslevik, Emmalee, 1984, et al.
(author)
-
Home economics teachers’ perceptions of facilitating and inhibiting factors when teaching sustainable food consumption
- 2018
-
In: Sustainability. - : AMER SOC ENGINEERING EDUCATION, 1818 N STREET, NW SUITE 600, WASHINGTON, DC 20036 USA. - 2071-1050. ; 10:5
-
Journal article (peer-reviewed)abstract
- The aim of the present study is to explore experienced home economics (HE) teachers’ perceptions of the influencing factors that condition their teaching opportunities regarding the revised mission to implement sustainable development (SD) in food-related education. Five purposefully selected HE teachers participated in individual, semi-structured, in-depth interviews. The recorded interviews were transcribed verbatim and analysed using qualitative thematic analysis. The results show a shared view of in the importance of educating the next generation of sustainable food consumers. Teachers returned to specific influencing factors that conditioned their opportunities to implement a perspective of SD in HE food education. This generated four themes: (1) Unscheduled foodwork in preparing sustainable food education, (2) opportunities to link everyday food choices with larger food system issues, (3) access to sustainable supportive food products and materials, and (4) a school environment in support of food-related teaching. The teachers outlined a number of local and national factors perceived to inhibit access to facilitators and expressed a concern for pupils’ opportunities for quality assurance and goal achievement. The suggested influencing factors could serve as propositions for further investigations in the continued work of both resource reinforcements as well as of developing a SD perspective in food-related HE education. © 2018 by the author.
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| 32. |
- Hansson, Sture, et al.
(author)
-
Competition for the fish - fish extraction from the Baltic Sea by humans, aquatic mammals, and birds
- 2018
-
In: ICES Journal of Marine Science. - : Oxford University Press (OUP). - 1054-3139 .- 1095-9289. ; 75:3, s. 999-1008
-
Journal article (peer-reviewed)abstract
- Seals and fish-eating birds have increased in the Baltic Sea and there is concern that they compete with fisheries. Using data from around year 2010, we compare consumption of different fish species by seals and birds to the catch in the commercial and recreational fishery. When applicable this is done at the geographical resolution of ICES subdivisions. Predation by birds and mammals likely has limited impact on the populations of the commercially most important species (herring, sprat, and cod). In the central and southern Baltic, seals and birds consume about as much flatfish as is caught by the fishery and competition is possible. Birds and seals consume 2-3 times as much coastal fish as is caught in the fishery. Many of these species are important to the fishery (e. g. perch and whitefish) and competition between wildlife and the fishery is likely, at least locally. Estimated wildlife consumption of pike, sea trout and pikeperch varies among ICES subdivisions and the degree of competition for these species may differ among areas. Competition between wildlife and fisheries need to be addressed in basic ecosystem research, management and conservation. This requires improved quantitative data on wildlife diets, abundances and fish production.
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| 33. |
- Holmer, A, et al.
(author)
-
Acceptance of Nordic snack bars in children aged 8-11 years
- 2012
-
In: Food & Nutrition Research. - 1654-6628 .- 1654-661X. ; 56:10484
-
Journal article (peer-reviewed)abstract
- Background: A health promoting diet is suggested to be tailored to regional circumstances to preserve the cultural diversity in eating habits, as well as contribute to more environmentally friendly eating. It may influence consumer acceptance, however, if the components of the diet differs considerably from their habitual food. Objective: This study aimed to investigate whether snack bars composed of Nordic ingredients were accepted by 8-11 year-old Danish (n=134) and Swedish (n=109) children. Design: A seven-point hedonic scale was used to measure the children’s acceptance of five snack bars that varied in their composition of whole grains, berries and nuts. A preference rank ordering of the five bars was also performed. Results: The results showed that samples that were rated highest in liking and were most preferred in both countries were a kamut/pumpkin bar and an oat/cranberry bar. The sample with the lowest rating that was also least preferred was a pumpernickel/sea buckthorn bar. Flavour was the most important determinant of overall liking followed by texture, odour and appearance. Conclusions: Children’s acceptances and preferences were highly influenced by the sensory characteristics of the bars, mainly flavour. In agreement with earlier studies, the novel food ingredients seemed to influence children’s preferences. The Nordic snack bars may have a potential to be a snack option for Danish and Swedish school children, but repeated exposures to the products are recommended to increase children’s acceptance.
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| 34. |
- Melander, Dan, et al.
(author)
-
Destination development and food: Can it work?
- 2018
-
In: Tomorrow's Food Travel #TFTSWEDEN Corporate Conference; Visit Sweden, Centre for Tourism at the University of Gothenburg, West Sweden Tourist Board and Gothenburg & Co., 9–10 October 2018, Gothenburg, Sweden.
-
Conference paper (peer-reviewed)abstract
- Local participation is an oft agreed upon criterion and an essential condition for development and sustainability of any „new‟ form of tourism. Yet, it is the combination of the words „local‟ and „participation‟ that paradoxically implies that local residents are being so often left out of the planning, decision-making and managing of tourist development. Indeed, many have failed to understand the social structures that affect the outcome of participation. This issue is important to have in mind if we truly wish to embrace and develop local food production and tourism in the social setting of socio-economically challenged areas, such as the north-eastern parts of Gothenburg. Here, using food tourism as an integration strategy can be problematic for different reasons. A focus on food may breed stereotypes about immigrants or general suspicion, and thus attract negative media attention. Moreover, low levels of trust in municipal authorities can create difficulties of implementation and cause reluctance among the key actors in the area. By departing from the experiences of the ongoing project “Urban Rural Gothenburg”, this presentation takes in both tracks into account: the benefits of food tourism and the area’s many assets, but also the challenges these assets may entail due to the area’s specific socio-economic characteristics.
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| 35. |
- Almered Olsson, Gunilla, 1951, et al.
(author)
-
City–Region Food Systems: Scenarios to re-establish urban-rural links through sustainable food provisioning
- 2018
-
In: Tomorrow’s Food Travel (TFT) conference, Centre for Tourism – University of Gothenburg, 8–10 October 2018, Gothenburg, Sweden.
-
Conference paper (peer-reviewed)abstract
- City–Region Food Systems (CRFS) is a cutting-edge concept and an emerging field of research. As a new analytical lens, it offers an integrated and multi-dimensional perspective on food’s origins, how it is grown and the path it follows to our plates and beyond. Building on this concept, this presentation reflects a prospective research project which seeks to explore opportunities for innovative and sustainable food systems in the Gothenburg region of Sweden by focusing on how rural and urban regions, food production and market can be integrated to promote regional food security. The project intends to: 1) develop scenarios with stakeholders for local food production in the region; 2) analyze the consequences of the scenarios on landscape change and biodiversity; 3) explore socio-economic consequences for producers and local communities; and 4) evaluate the sustainability and feasibility of scenarios with stakeholders. Five municipalities in Western Sweden (Gothenburg, Kungälv, Lerum, Alingsås and Essunga) will serve as study areas for the project, selected to reflect different kinds of potential for local food production in terms of dissimilar environmental conditions, prerequisites for farming and economic histories. The project responds to expressed interests and knowledge needs in the region and will be developed and implemented in direct cooperation with local and regional actors such as Västarvet, the Västra Götaland Region, the municipalities and various producer organizations. In sum, there are premises suggesting that recent urban food strategies and plans with sustainability ambitions are embracing several Sustainable Development Goals in the environmental, social, economic, and equity dimensions. This, in turn, is a characteristic of the Transition Movements pathway, in which the utility of food strategies in the work with sustainability transitions seems inevitable. The results are therefore likely to be transferable to other regions.
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| 36. |
- Palsdottir, Anna Maria, et al.
(author)
-
Nature-Based Therapeutic Interventions
- 2011
-
In: Forests, Trees and Human Health. - Dordrecht : Springer Netherlands. - 9789048198054 ; , s. 309-342
-
Book chapter (other academic/artistic)
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| 37. |
- kaiser, matthias, et al.
(author)
-
Food ethics: a Wide Field in Need of Dialogue
- 2016
-
In: Food Ethics. - : Springer Science and Business Media LLC. - 2364-6853 .- 2364-6861. ; 1:1, s. 1-7
-
Journal article (peer-reviewed)abstract
- There are a few things which are obviously a central part of everyone’s life, at all times, and all over the globe, and which are crucial for our wellbeing. Food is, like sex, such an essential ingredient of our life, an ingredient of what we expect of a good life. What is on our plates is always a result of nature and culture, to the extent that it may seem hard to find commonalities in our global diet. As academics we have asked different questions about food. For a long time these questions have been dominated by the quest to secure enough food and to improve what we have got. It is, however, noteworthy that we also always have asked the normative questions in relation to food: Is it right to eat this kind of food? Do we produce our food the right way? Is there injustice and bad power in the way we distribute the food? Are we lied to in regard to what is on our plate? When we enter the normative realm, we enter the realm of ethics, understood in a wide and comprehensive way. As all normative questions, we need to be well informed by knowledge about how the world is, and what is at stake and for whom. We call this food ethics. Food ethics raises issues and asks questions in relation to food all along the value chains. It also puts things into relation with each other. At the same time it disentangles complex heaps of factors and pieces of knowledge, and looks for guidance. It is issue driven, rather than interest driven. It unites scholars with farmers and fishermen, chefs with industry, consumers with lawyers, and food citizens with authorities. As a young field within academia it is important to guard against efforts to appropriate the field for narrow interests, and instead to combine the natural and social sciences in analysing and addressing the challenges. We do not necessarily call for the grand ethical theory that explains it all, but rather start with the simple things in a very complex overall picture. We want to draw attention to ethically significant facts, discuss problematic developments, point to genuine dilemmas, learn about food relevant contexts and history, and look for individual, professional and institutional responses to ethical challenges and issues. Thus, one of the missions of this new journal Food Ethics, is to widen the scope and the discussion on the topic, and to be inclusive in terms of who has something to contribute to the field. There is no escaping from confronting very complex issues when it comes to managing one of the most basic needs we all have, food. As editors of this new journal we maintain that food ethics deserves special and inter-disciplinary attention by researchers, that it is not sufficiently dealt with by what is currently known as bioethics, that it is intrinsically connected with the so-called grand societal challenges of our time, that it is a globally important field which demands particular attention to complexities and uncertainties, as much as it needs to be explicit about what values are at stake and for whom, and which normative principles it touches upon.
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| 38. |
- Flysjö, A., et al.
(author)
-
How does co-product handling affect the carbon footprint of milk? Case study of milk production in New Zealand and Sweden
- 2011
-
In: International Journal of Life Cycle Assessment. - : Springer Science and Business Media LLC. - 1614-7502 .- 0948-3349. ; 16:5, s. 420-430
-
Journal article (peer-reviewed)abstract
- Purpose This paper investigates different methodologies of handling co-products in life cycle assessment (LCA) or carbon footprint (CF) studies. Co-product handling can have a significant effect on final LCA/CF results, and although there are guidelines on the preferred order for different methods for handling co-products, no agreed understanding on applicable methods is available. In the present study, the greenhouse gases (GHG) associated with the production of 1 kg of energy-corrected milk (ECM) at farm gate is investigated considering co-product handling. Materials and methods Two different milk production systems were used as case studies in the investigation of the effect of applying different methodologies in coproduct handling: (1) outdoor grazing system in New Zealand and (2) mainly indoor housing system with a pronounced share of concentrate feed in Sweden. Since the cows produce milk, meat (when slaughtered), calves, manure, hides, etc., the environmental burden (here GHG emissions) must be distributed between these outputs (in the present study no emissions are attributed to hides specifically, or to manure which is recycled on-farm). Different methodologically approaches, (1) system expansion (two cases), (2) physical causality allocation, (3) economic allocation, (4) protein allocation and (5) mass allocation, are applied in the study. Results and discussion The results show large differences in the final CF number depending on which methodology has been used for accounting co-products. Most evident is that system expansion gives a lower CF for milk than allocation methods. System expansion resulted in 63- 76% of GHG emissions attributed directly to milk, while allocation resulted in 85-98%. It is stressed that meat is an important by-product from milk production and that milk and beef production is closely interlinked and therefore needs to be considered in an integrated approach. Conclusions To obtain valid LCA/CF numbers for milk, it is crucial to account for by-products. Moreover, if CF numbers for milk need to be compared, the same allocation procedure should be applied. © 2011 Springer-Verlag.
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| 39. |
- Flysjö, A., et al.
(author)
-
The impact of various parameters on the carbon footprint of milk production in New Zealand and Sweden
- 2011
-
In: Agricultural Systems. - : Elsevier BV. - 1873-2267 .- 0308-521X. ; 104:6, s. 459-469
-
Journal article (peer-reviewed)abstract
- The carbon footprint (CF) of milk production was analysed at the farm gate for two contrasting production systems; an outdoor pasture grazing system in New Zealand (NZ) and a mainly indoor housing system with pronounced use of concentrate feed in Sweden (SE). The method used is based on the conceptual framework of lifecycle assessment (LCA), but only for greenhouse gas (GHG) emissions. National average data were used to model the dairy system in each country. Collection of inventory data and calculations of emissions were harmonised to the greatest extent possible for the two systems. The calculated CF for 1kg of energy corrected milk (ECM), including related by-products (surplus calves and culled cows), was 1.00kg carbon dioxide equivalents (CO2e) for NZ and 1.16kg CO2e for SE. Methane from enteric fermentation and nitrous oxide emissions from application of nitrogen (as fertiliser and as excreta dropped directly on the field) were the main contributors to the CF in both countries. The most important parameters to consider when calculating the GHG emissions were dry matter intake (DMI), emission factor (EF) for methane from enteric fermentation, amount of nitrogen applied and EF for direct nitrous oxide emissions from soils. By changing one parameter at a time within 'reasonable' limits (i.e. no extreme values assumed), the impact on the total CF was assessed and showed changes of up to 15%. In addition, the uncertainty in CF estimates due to uncertainty in EF for methane from enteric fermentation and nitrous oxide emissions (from soil and due to ammonia volatilisation) were analysed through Monte Carlo simulation. This resulted in an uncertainty distribution corresponding to 0.60-1.52kg CO2e kg-1 ECM for NZ and 0.83-1.56kg CO2e kg-1 ECM for SE (in the prediction interval 2.5-97.5%). Hence, the variation within the systems based on the main EF is relatively large compared with the difference in CF between the countries. © 2011 Elsevier Ltd.
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| 40. |
- Messing, Ingmar, et al.
(author)
-
Bygg inte på kultur- och åkermark
- 2009
-
In: Upsala nya tidning. - Uppsala. - 1104-0173. ; :2 maj, s. 4-
-
Journal article (pop. science, debate, etc.)
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| 41. |
- Tjärnemo, Heléne, et al.
(author)
-
Swedish food retailers promoting climate smarter food choices : trapped between visions and reality?
- 2015
-
In: Journal of Retailing and Consumer Services. - 0969-6989 .- 1873-1384. ; 24, s. 130-139
-
Journal article (peer-reviewed)abstract
- Food retailers are important actors in the development of a more environmentally sustainable food system. They are powerful in their procurement role and have the potential to promote and encourage consumers to buy climate smarter food. While food retailers have developed environmental visions, policies and goals, a major question is to what extent these commitments translate into action in the products sourced and promoted. This paper aims to explore the ways and extent to which food retailers assist consumers to make climate smarter food choices, more specific to reduce their meat consumption, and to identify potential and perceived difficulties towards doing this. The empirical data is based on interviews with 17 Swedish food retail representatives. The findings indicate that food retailers address climate change in their environmental policy statements and have environmental targets for retail operations, such as energy and transport efficiency and recycling of waste. Moreover, retailers promote and encourage consumers to buy organic, local, and seasonal food and to minimize food waste. No initiatives are taken to help consumers reduce their meat consumption. Yet, there is a growing consensus among scientists that meat production is a large contributor to greenhouse gas emissions. Food retailers seem reluctant to guide consumers to climate smarter food choices if it means reducing the meat range or the promotion of meat. To broaden the range of high quality and more expensive meat is seen as a more feasible option. The meat category is perceived as important to attract new and keep loyal customers.
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| 42. |
- Ingelhag, Karin, et al.
(author)
-
Local food strategies for the future : Experiences from Gothenburg
- 2018
-
In: Måltid Sverige: “Livsmedelsforum 2018” Conference, Chalmers University of Technology, Environmental Protection Agency, RISE – Research Institutes of Sweden, Västra Götaland Regional Council, Swedish University of Agricultural Sciences, Swedish Agency for Marine and Water Management; 11 October 2018, Gothenburg, Sweden.
-
Conference paper (peer-reviewed)abstract
- Ongoing climate change, demographic pressures, and socio-economic differences are likely to increase vulnerability to food insecurity, whilst the challenge of providing sufficient, nutritious, and affordable food for everyone has never been greater. In this sense, the concept of food justice is gaining prominence in urban strategies and decision making worldwide. Gothenburg, like several other European cities, grapples with significant gaps between its geographical areas and various sectors of society. One of these gaps relates to the need of developing a sustainable food system, which would comprise the whole chain from food production, via processing, distribution and marketing, to consumption. In this dimension, many research studies have identified unutilized social capital and natural resources as the main causes of fragmentation, stressing the need for strengthening bottom-up initiatives through projects that could affect the local food strategy in a positive way. Here, participatory approaches have shown to be useful tools for joint development of possible futures and have laid bare overlooked possibilities for successful implementation of food strategies. In this vein, the City of Gothenburg has developed a project (Urban Rural Gothenburg ) that systematically tests and demonstrates innovative methods for new creative interactions between the city and the country, some of which explore novel developments within food security, food affordability and access to food. This presentation focuses on the role of Gothenburg’s food strategy for local production and logistics, and as a green basis for rural-urban linkages by focusing on the employed assumptions and methods set out to create beneficial environmental, social and economic effects.
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| 43. |
- Kihiu, E. N., et al.
(author)
-
Agricultural market access and dietary diversity in Kenya: Gender considerations towards improved household nutritional outcomes
- 2021
-
In: Food Policy. - : Elsevier BV. - 0306-9192 .- 1873-5657. ; 100
-
Journal article (peer-reviewed)abstract
- Achieving food and nutritional security by all people at all times is a key development goal at the global, regional and national levels. To achieve access to sufficient safe food of acceptable quality at all times, gender mainstreaming in food and nutritional policies, programmes and projects is increasingly being recognized as important to the realization of this goal. In addition, access to well-functioning markets is likely to improve farmers profitability and their access to diverse nutritious foods. This paper avails evidence on the effect of gendered access to organized agricultural markets on household dietary diversity scores in Kenya using nationwide survey data. Using an inverse probability weighted treatment-effect estimator, we evaluate whether improving women's and men's access to well-functioning agricultural markets facilitates diet diversity among households. The analysis shows that while improving both women and men's agricultural commercialization through organised marketing systems improves the dietary diversity outcomes of households, the effect of women is double that of men. However, greater effects are achieved when both the female and male in the same household have access to well-functioning agricultural markets. Further, addressing human and socio-economic needs of households are also important in enhancing households' dietary diversity quality.
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| 44. |
- Hornborg, Sara, et al.
(author)
-
Trophic indicators in fisheries : A call for re-evaluation
- 2013
-
In: Biology Letters. - : The Royal Society. - 1744-9561 .- 1744-957X. ; 9:1, s. 1050-
-
Journal article (peer-reviewed)abstract
- Mean trophic level (MTL) of landings and primary production required (PPR) by fisheries are increasingly used in the assessment of sustainability in fisheries. However, in their present form, MTL and PPR are prone to misinterpretation. We show that it is important to account for actual catch data, define an appropriate historical and spatial domain, and carefully consider the effects of fisheries management, based on results from a case study of Swedish fisheries during the past century.
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| 45. |
- Wendin, Karin, 1963-, et al.
(author)
-
Dynamic analyses of sensory and microstructural properties of cream cheese
- 2000
-
In: Food Chemistry. - 0308-8146 .- 1873-7072. ; 71:3, s. 363-378
-
Journal article (peer-reviewed)abstract
- Flavour and texture in cream cheese depend on the microstructure. The objective of this work was to study the influence of fat content, salt content and homogenisation pressure on the microstructure and sensory properties of cream cheese. Twelve types of cream cheese were produced according to a full-factorial design, whereby the fat content was set at three levels, the salt content at two levels and the homogenisation pressure at two levels. The cheeses were analysed by a sensory panel, using both quantitative descriptive profiling and time intensity (T1) evaluation, and by using a confocal laser scanning microscope, CLSM, whereby the microstructure of the cheeses was analysed. All the design parameters had a significant influence on the flavour and texture, although fat had the largest effect. Interaction effects between the design parameters were also found to influence the character of cream cheese. The results showed that it is possible to create a cream cheese with lower fat content and with sensory attributes similar to the attributes in cream cheese with high fat content, by modification of production parameters.
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| 46. |
- Gisslevik, Emmalee, 1984
(author)
-
Education for sustainable food consumption in home and consumer studies : Lärande för hållbar matkonsumtion i hem- och konsumentkunskap
- 2018
-
Doctoral thesis (other academic/artistic)abstract
- Education as a means to enable sustainable food consumption has gained increasing recognition as a vital means to decrease current burdens upon both natural resources and human health. In response, the Swedish compulsory school subject of home and consumer studies, which positions education about food as core content, has been revised to incorporate in its national syllabus a perspective of sustainable development since 2011. However, because sustainable development remains an ambiguous, contested concept with a range of definitions and interpretations, it is necessary to gain better understanding of what incorporating its perspective can entail in home and consumer studies, particularly regarding the core food-related content knowledge that it teaches. Building upon four papers, this thesis reports research guided by an interpretive and exploratory approach that involved analysing data from syllabuses, observations, recordings of in-class lessons and interviews with practising teachers. The results reveal two ways of understanding what incorporating a perspective of sustainable development can entail in home and consumer studies in Sweden. The first understanding proposes an enriched and unified practice in which the curriculum prioritises embodied forms of knowledge about healthy, ethical and resource-efficient food consumption by allowing a multi-relational, systems thinking approach while focusing a homemade meal practice. By contrast, the second understanding proposes a practice riddled with inconsistencies and contradictions in providing teaching and learning opportunities to attain the intended goals. This ultimately results in fragmented learning opportunities focused more on informed reasoning than on informed actions. Taken together, both understandings pose theoretical, conceptual and practical implications, both for home and consumer studies in particular and in education for sustainable food consumption in general.
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| 47. |
- Stedt, Kristoffer, 1991, et al.
(author)
-
Cultivation of Ulva fenestrata using herring production process waters increases biomass yield and protein content
- 2022
-
In: Frontiers in Marine Science. - : Frontiers Media SA. - 2296-7745. ; 9:988523
-
Journal article (peer-reviewed)abstract
- Ulva spp. (sea lettuce) has recently gained attention as a sustainable protein source due to its high productivity and many nutritional properties interesting for the food industry. In this study, we explored a possible industrial symbiosis between herring production processing industries and Ulva fenestrata cultivation. We show that U. fenestrata cultivated in herring production process waters had four to six times higher biomass yields (27.17 - 37.07 g fresh weight vs. 6.18 g fresh weight) and three times higher crude protein content (> 30% dry weight vs. 10% dry weight) compared to U. fenestrata cultivated in seawater. Along with the elevation of protein, the herring production process waters also significantly increased levels of all essential amino acids in the seaweed biomass. The content of some heavy metals (arsenic, mercury, lead, and cadmium) was well below the maximum allowed levels in foodstuff. Therefore, quantities of biomass around 100 g dry weight could be consumed daily following the US Environmental Protection Agency’s reference doses. Combined, the results show that cultivation of U. fenestrata in herring production process waters has great potential to produce sustainable proteins for the growing world population. At the same time, nutrients of currently discarded process waters are circulated back to the food chain.
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| 48. |
- Moore, Jason W., 1971-
(author)
-
The end of the road? : agricultural revolutions in the capitalist World-ecology, 1450-2010
- 2010
-
In: Journal of Agrarian Change. - : Wiley - Blackwell. - 1471-0358 .- 1471-0366. ; 10:3, s. 389-413
-
Journal article (peer-reviewed)abstract
- Does the present socio-ecological impasse – captured in popular discussions of the ‘end’ of cheap food and cheap oil – represent the latest in a long history of limits and crises that have been transcended by capital, or have we arrived at an epochal turning point in the relation of capital, capitalism and agricultural revolution? For the better part of six centuries, the relation between world capitalism and agriculture has been a remarkable one. Every great wave of capitalist development has been paved with ‘cheap’ food. Beginning in the long sixteenth century, capitalist agencies pioneered successive agricultural revolutions, yielding a series of extraordinary expansions of the food surplus. This paper engages the crisis of neoliberalism today, and asks: Is another agricultural revolution, comparable to those we have known in the history of capitalism, possible? Does the present conjuncture represent a developmental crisis of capitalism that can be resolved by establishing new agro-ecological conditions for another long wave of accumulation, or are we now witnessing an epochal crisis of capitalism? These divergent possibilities are explored from a perspective that views capitalism as ‘world-ecology’, joining together the accumulation of capital and the production of nature in dialectical unity.
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| 49. |
- Viklund, Gunilla, et al.
(author)
-
Acrylamide in crisps: Effect of blanching studied on long-term stored potato clones
- 2010
-
In: Journal of Food Composition and Analysis. - : Elsevier BV. - 0889-1575 .- 1096-0481. ; 23:2, s. 194-198
-
Journal article (peer-reviewed)abstract
- Acrylamide, a probable carcinogen, is formed via the Maillard reaction between reducing sugars and the amino acid asparagine during heating of carbohydrate-rich foods. Potatoes contain high levels of these precursors, and thus potato crisps can contain high levels of acrylamide. In this study, the effect of blanching on the concentration of precursors and acrylamide content was studied in three potato clones stored at 4 degrees C or 8 degrees C. After 6, 12 and 18 weeks of storage, potatoes were sliced and blanched for 3 min in water at 80 degrees C and deep-fat fried for 3 min at an initial frying temperature of 180 degrees C and a final frying temperature of 160 degrees C. Blanching reduced the acrylamide content by 51-73%. Interestingly, blanching affected the levels of the precursor sugars and asparagine, but not the acrylamide content to the same extent. The reduction of precursors was 17-66%. This may be due to restriction of the transport of precursors to the surface, as the availability of precursors for reactions is crucial for acrylamide formation. In conclusion, blanching was an efficient way to reduce acrylamide content in potato crisps, in addition to using potatoes low in asparagine and reducing sugars. (C) 2009 Elsevier Inc. All rights reserved.
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| 50. |
- Messing, Ingmar, et al.
(author)
-
Methods to estimate lettuce evapotranspiration in greenhouse conditions in the central zone of Chile
- 2009
-
In: Chilean Journal of Agricultural Research. - 0718-5820. ; 69, s. 60-70
-
Journal article (peer-reviewed)abstract
- This study evaluates five methods to estimate crop evapotranspiration in greenhouse conditions. It compares their performance in relation to the evapotranspiration directly determined from water balance measurements (ET(lys)) in an irrigated lettuce (Lactuca sativa L.) crop during 9 weeks. Daily values of the reference evapotranspiration (ETo) from Class A pan (CAP), Piche atmometers (ATM), Andersson evaporimeters (ANE), FAO-Radiation (FRE) and FAO-Penman-Monteith (PME) equations were compared. The methods showed similar temporal variations but at different ranges as follows: ANE < CAP < FRE < PME < ATM. Furthemore, ETo had a clear correlation with solar radiation. Crop coefficients (Kc = ET(lys)/ETo) varied somewhat amongst the methods, but trends were identified for two periods: in the first week, the overall mean Kc was 0.3 (+/- 0.1) and in weeks 2 to 9 on average 0.6 (+/- 0.3). The greenhouse values of Kc were lower than those generally adopted for lettuce in field conditions. In terms of irrigation design, crop evapotranspiration can be estimated by the methods in this study, on the condition that the appropriate crop coefficients are applied. The fact that ANE showed values closest to those of ETlys, along with cost and management convenience, makes it an advantageous alternative as compared to the other methods.
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