| 1. |
- Johnsson, Anna-Ida, et al.
(författare)
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Specific SCAR markers and multiplex real-time PCR for quantification of two Trichoderma biocontrol strains in environmental samples
- 2011
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Ingår i: BioControl. - : Springer Science and Business Media LLC. - 1386-6141 .- 1573-8248. ; 56, s. 903-913
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Tidskriftsartikel (refereegranskat)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
(författare)
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Non-negative estimation of variance components in heteroscedastic one-way random-effects ANOVA models
- 2010
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Ingår i: Statistics. - : Informa UK Limited. - 0233-1888 .- 1029-4910. ; 44, s. 557-569
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Tidskriftsartikel (refereegranskat)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. |
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| 5. |
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| 6. |
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| 7. |
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| 8. |
- Skovsgaard, Jens Peter
(författare)
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Bog om tarmvridrøn
- 2013
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Ingår i: Skoven. - 0106-8539. ; 45, s. 551-551
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Annan publikation (övrigt vetenskapligt/konstnärligt)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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| 9. |
- Messing, Ingmar
(författare)
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Land and land use : Natural preconditions
- 2011
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Ingår i: Agriculture and Forestry in Sweden since 1900- a cartographic description. - 9789187760617 ; , s. 14-22
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 10. |
- Messing, Ingmar
(författare)
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Marken i Sverige : Naturliga förutsättningar
- 2011
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Ingår i: Sveriges nationalatlas. Jordbruk och skogsbruk i Sverige sedan år 1900: en kartografisk beskrivning. - 9789187760594 ; , s. 14-22
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 11. |
- Tunon, Håkan, et al.
(författare)
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Kulturarv och hållbar utveckling
- 2010
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Ingår i: Bebyggelsehistorisk tidskrift. - : Föreningen Bebyggelsehistorisk tidskrift. - 0349-2834 .- 2002-3812. ; , s. 99–106-
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 12. |
- Thulin, Carl-Gustaf
(författare)
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Utsättning av arter : möjlighet för bevarandebiologin
- 2010
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Ingår i: Biodiverse. - 1401-5064. ; 15, s. 8-9
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Tidskriftsartikel (populärvet., debatt m.m.)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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| 13. |
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| 14. |
- Norman, Johan
(författare)
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Skogen – en plats för upplevelser
- 2011
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Ingår i: Grön Entreprenör, Naturupplevelse och hälsa – forskningen visar vägen. - 9789157690364 ; , s. 62-75
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Bokkapitel (populärvet., debatt m.m.)
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| 15. |
- Palsdottir, Anna Maria, et al.
(författare)
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Nature-Based Therapeutic Interventions
- 2011
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Ingår i: Forests, Trees and Human Health. - Dordrecht : Springer Netherlands. - 9789048198054 ; , s. 309-342
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 16. |
- Isemo, Sanna, et al.
(författare)
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Urban food revisited: Green business development through co-creation
- 2018
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Ingår i: Thinkfood, Thinkpoint Innovation Arena, 15–16 September 2018, Gothenburg, Sweden.
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)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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| 17. |
- Röös, Elin, et al.
(författare)
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Diagnostic, regenerative or fossil-free - exploring stakeholder perceptions of Swedish food system sustainability
- 2023
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Ingår i: Ecological Economics. - : Elsevier B.V.. - 0921-8009 .- 1873-6106. ; 203
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Tidskriftsartikel (refereegranskat)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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| 18. |
-
Bulletin of Geography. Socio-Economic Series (Volume 40)
- 2018
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Ingår i: Bulletin of Geography. Socio-Economic Series (De Gruyter). - 1732-4254 .- 1732-4254. ; 40:40, s. 1-196
-
Annan publikation (övrigt vetenskapligt/konstnärligt)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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| 19. |
- Messing, Ingmar, et al.
(författare)
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Bygg inte på kultur- och åkermark
- 2009
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Ingår i: Upsala nya tidning. - Uppsala. - 1104-0173. ; :2 maj, s. 4-
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Tidskriftsartikel (populärvet., debatt m.m.)
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| 20. |
- Haysom, Gareth, et al.
(författare)
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Food systems sustainability: An examination of different viewpoints on food system change
- 2019
-
Ingår i: Sustainability. - : MDPI AG. - 2071-1050. ; 11:12
-
Tidskriftsartikel (refereegranskat)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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| 21. |
- Messing, Ingmar, et al.
(författare)
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Methods to estimate lettuce evapotranspiration in greenhouse conditions in the central zone of Chile
- 2009
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Ingår i: Chilean Journal of Agricultural Research. - 0718-5820. ; 69, s. 60-70
-
Tidskriftsartikel (refereegranskat)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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| 22. |
- Almered Olsson, Gunilla, 1951, et al.
(författare)
-
Food systems sustainability - For whom and by whom? : An examination of different 'food system change' viewpoints
- 2018
-
Ingår i: Development Research Conference 2018: “Rethinking development”, 22–23 August 2018, Gothenburg, Sweden.
-
Konferensbidrag (refereegranskat)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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| 23. |
- Messing, Ingmar, et al.
(författare)
-
Rovdrift på åkermark i Uppsala
- 2012
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Ingår i: Upsala nya tidning. - 1104-0173. ; , s. 5-
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Annan publikation (populärvet., debatt m.m.)
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| 24. |
- Linner, Harry, et al.
(författare)
-
Agricultural land needs protection
- 2011
-
Ingår i: NJF Report. - 1653-2015. ; 7, s. 29-34
-
Annan publikation (övrigt vetenskapligt/konstnärligt)
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| 25. |
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| 26. |
- Messing, Ingmar, et al.
(författare)
-
Viktig åkermark hotas
- 2010
-
Ingår i: Upsala nya tidning. - 1104-0173.
-
Tidskriftsartikel (populärvet., debatt m.m.)
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| 27. |
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| 28. |
- Boman, Mattias, et al.
(författare)
-
Kitesurfing
- 2011
-
Ingår i: Friluftssport och Äventyrsidrott: Utmaningar för lärare, ledare och miljö i en föränderlig värld. - 9789144069135 ; , s. 194-199
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 29. |
- Carlsson, Anders
(författare)
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Plant oils as feedstock alternatives to petroleum - A short survey of potential oil crop platforms
- 2009
-
Ingår i: Plant Breeding. - : Elsevier BV. - 0179-9541 .- 1439-0523. ; 91, s. 665-670
-
Forskningsöversikt (refereegranskat)abstract
- Our society is highly depending on petroleum for its activities. About 90% is used as an energy source for transportation and for generation of heat and electricity and the remaining as feedstocks in the chemical industry. However, petroleum is a finite source as well as causing several environmental problems such as rising carbon dioxide levels in the atmosphere. Petroleum therefore needs to be replaced by alternative and sustainable sources. Plant oils and oleochemicals derived from them represent such alternative sources, which can deliver a substantial part of what is needed to replace the petroleum used as feedstocks.Plant derived feedstock oils can be provided by two types of oil qualities, multi-purpose and technical oils. Multi-purpose oils represent oil qualities that contain common fatty acids and that can be used for both food and feedstock applications. Technical oil qualities contain unusual fatty acids with special properties gained from their unique molecular structure and these types of oils should only be used for feedstock applications. As a risk mitigation strategy in the selection of crops, technical oil qualities should therefore preferably be produced by oil crop platforms dedicated for industrial usage. This review presents a short survey of oil crop platforms to be considered for either multi-purpose or technical oils production. Included among the former platforms are some of the major oil crops in cultivation such as oil palm, soybean and rapeseed. Among the later are those that could be developed into dedicated industrial platforms such as crambe, flax, cotton and Brassica carinata. The survey finishes off by highlighting the potential of substantial increase in plant oil production by developing metabolic flux platforms, which are starch crops converted into oil crops. (c) 2009 Elsevier Masson SAS. All rights reserved.
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| 30. |
- Beier, Ulrika, et al.
(författare)
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Fisk och fiske i Mälaren
- 2015
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Rapport (populärvet., debatt m.m.)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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| 31. |
- Svensson, Teresia, 1975-, et al.
(författare)
-
Chlorine cycling and the fate of Cl in terrestrial environments
- 2021
-
Ingår i: Environmental Science and Pollution Research. - : Springer. - 0944-1344 .- 1614-7499. ; 28:7, s. 7691-7709
-
Tidskriftsartikel (refereegranskat)abstract
- Chlorine (Cl) in the terrestrial environment is of interest from multiple perspectives, including the use of chloride as a tracer forwater flow and contaminant transport, organochlorine pollutants, Cl cycling, radioactive waste (radioecology; 36Cl is of largeconcern) and plant science (Cl as essential element for living plants).During the past decades, there has been a rapid developmenttowards improved understanding of the terrestrial Cl cycle. There is a ubiquitous and extensive natural chlorination of organicmatter in terrestrial ecosystems where naturally formed chlorinated organic compounds (Clorg) in soil frequently exceed theabundance of chloride. Chloride dominates import and export from terrestrial ecosystems while soil Clorg and biomass Cl candominate the standing stock Cl. This has important implications for Cl transport, as chloride will enter the Cl pools resulting inprolonged residence times. Clearly, these pools must be considered separately in future monitoring programs addressing Clcycling. Moreover, there are indications that (1) large amounts of Cl can accumulate in biomass, in some cases representing themain Cl pool; (2) emissions of volatile organic chlorines could be a significant export pathway of Cl and (3) that there is aproduction of Clorg in tissues of, e.g. plants and animals and that Cl can accumulate as, e.g. chlorinated fatty acids in organisms.Yet, data focusing on ecosystem perspectives and combined spatiotemporal variability regarding various Cl pools are still scarce,and the processes and ecological roles of the extensive biological Cl cycling are still poorly understood.
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| 32. |
- Daneshi, Ali, et al.
(författare)
-
Energy assessment in product chain of pasteurized milk: agronomy, animal farm and processing plant
- 2014
-
Ingår i: Ecopersia. - 2322-2700. ; 2:3, s. 697-714
-
Tidskriftsartikel (refereegranskat)abstract
- The objectives for this study were first to understand and estimate energy consumption in each stage of production and processing of milk using regional data and second, suggesting improvement opportunities. A cradle to gate assessment of market milk was performed by separating the system into three stages: agronomy, animal farm and processing plant. Data were collected from multiple sources e.g. questionnaire, published papers, national and international databases, and the processing plant database. Throughout the study, ISO framework and International Dairy Federation guideline on life cycle assessment were used. The functional unit (FU) was one liter of pasteurized milk packaged in plastic pouch at the processing plant gate. The average energy demand for producing 1 kg of fat-protein corrected milk at farm-gate was 10.8 MJ, although for the final packaged milk, it was 12.5MJ. Main stages in overall energy use of FU were agronomy 68 %, animal farm 19 % and processing plant 13%. The average energy use for raw milk production was 2-5 times higher than previous European reports. To enhance efficiency in this sector, we need to assess other regions’ potentials for feed and milk production and then to focus on agronomy stage for lower energy use by optimization of irrigation, or even importing energy intensive feed such as barley and alfalfa from other countries.
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| 33. |
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| 34. |
- Åkerström, Andreas, et al.
(författare)
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Effects of Sampling Time and Nitrogen Fertilization on Anthocyanidin Levels in Vaccinium myrtillus Fruits
- 2009
-
Ingår i: Journal of Agricultural and Food Chemistry. - : American Chemical Society (ACS). - 0021-8561 .- 1520-5118. ; 57, s. 3340-3345
-
Tidskriftsartikel (refereegranskat)abstract
- Vaccinium myrtillus berries (bilberries) contain antioxidants, in particular anthocyanins, which are secondary metabolites that have proven health-promoting effects. Bilberries were collected at the Svartberget research forest in northern Sweden from plots with no, low, and high applications of NH(4)NO(3) on three replicated dates in each year from 2005-2007, and their anthocyanidin contents were analyzed by high performance liquid chromatography. Their mean total anthocyanidin contents Were 9.0, 6.2, and 22.7 mg/g DW in 2005, 2006, and 2007, respectively. The values were significantly higher in 2005 than in 2006 and significantly higher in 2007 than in both previous years, across all three sampling dates. In addition, anthocyanidin contents were significantly affected by sampling date in all years (P < 0.001); they were linearly correlated with the thermal sum in 2005 and 2007 but rose between the first and second sampling occasions and subsequently declined in 2006. No significant effect of nitrogen fertilization on total anthocyanidin levels was detected in any of the studied years. The results indicate that climatic factors and yearly fluctuations influence anthocyanidin biosynthesis and degradation more strongly than nitrogen availability. To our knowledge, this is the first time this effect of sampling time on anthocyanins in mature bilberries has been shown.
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| 35. |
- Stedt, Kristoffer, 1991, et al.
(författare)
-
Post-harvest cultivation with seafood process waters improves protein levels of Ulva fenestrata while retaining important food sensory attributes
- 2022
-
Ingår i: Frontiers in Marine Science. - : Frontiers Media SA. - 2296-7745.
-
Tidskriftsartikel (refereegranskat)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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| 36. |
- Drottberger, Annie, et al.
(författare)
-
Alternative Food Networks in Food System Transition-Values, Motivation, and Capacity Building among Young Swedish Market Gardeners
- 2021
-
Ingår i: Sustainability. - : MDPI AG. - 2071-1050. ; 13
-
Tidskriftsartikel (refereegranskat)abstract
- This study sheds light on a new generation of Swedish food producers, market gardeners, who are attracting attention in terms of food system sustainability, prompted by increasing consumer awareness about the value of healthy and locally produced food. Market gardening is part of a global agroecological movement opposed to industrialized agriculture and its negative impacts on the environment and rural communities. These food producers challenge the incumbent agri-food regime through the building of alternative food networks. This case-based study involving 14 young vegetable producers showed that young people who engage in market gardening are strongly motivated by dual incentives, namely entrepreneurship and transformation to sustainability. Six main competences were identified as important for market gardeners: practical skills related to growing vegetables, business management, innovation and continuous learning, systems thinking, pioneering, and networking. Individuals develop their skills through continuous experiential learning and gain knowledge through peer-to-peer learning using social media. However, they need to acquire certain skills relating to their daily work in the field and to managing a business. Market gardeners currently face a number of barriers erected by the sociopolitical environment, in particular regarding access to research-based knowledge, extension services, and business support.
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| 37. |
- Marklinder, Ingela, et al.
(författare)
-
Food safety knowledge, sources thereof and self-reported behaviour among university students in Sweden
- 2020
-
Ingår i: Food Control. - : Elsevier. - 0956-7135 .- 1873-7129. ; 113
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Tidskriftsartikel (refereegranskat)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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| 38. |
- Nilsson, Marie-Louise, et al.
(författare)
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Current-use and Organochlorine Pesticides and Polychlorinated Biphenyls in the Biodegradable Fraction of Source Separated Household Waste, Compost, and Anaerobic Digestate
- 2011
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Ingår i: Bulletin of Environmental Contamination and Toxicology. - : Springer Science and Business Media LLC. - 0007-4861 .- 1432-0800. ; 86, s. 60-64
-
Tidskriftsartikel (refereegranskat)abstract
- Several current-use (a parts per thousand currency sign80 ng g(-1) dry weight) and organochlorine pesticides (a parts per thousand currency sign15 ng g(-1) dry weight) and polychlorinated biphenyls (a parts per thousand currency sign18 ng g(-1) dry weight) were found in the biodegradable fraction of source separated household waste, compost, and/or anaerobic digestate. The degradation rates of individual compounds differ depending on the treatment. Dieldrin and pentachloroaniline, e.g., degrade more rapidly than the waste is mineralized and accumulates in the products after all treatments. Many organochlorines degrade at the same rate as the waste and have the same concentrations in the waste and products. Chlorpyrifos degrades slower than the waste and accumulates in all products and ethion during anaerobic digestion. The polychlorinated biphenyls and some pesticides show different degradations rates relative the waste during different processes. Understanding the degradation of the contaminants under different conditions is necessary to develop quality criteria for the use of compost and digestate.
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| 39. |
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| 40. |
- Tasin, Marco, et al.
(författare)
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Chemical Ecology and Management of Lobesia botrana (Lepidoptera: Tortricidae)
- 2011
-
Ingår i: Journal of Economic Entomology. - 0022-0493 .- 1938-291X. ; 104, s. 1125-1137
-
Tidskriftsartikel (refereegranskat)abstract
- The moth Lobesia botrana (Denis & Schiffermuller) (Lepidoptera: Tortricidae) feeds on grapes (Vitis vinifera L.), reducing yield and increasing susceptibility to fungal infections. L. botrana is among the most economically important insects in Europe and has recently been found in vineyards in Chile, Argentina, and California. Here, we review L. botrana biology and behavior in relation to its larval host (the grapevine) and its natural enemies. We also discuss current and future control strategies in light of our knowledge of chemical ecology, with an emphasis on the use of the sex pheromone-based strategies as an environmentally safe management approach. Pheromone-mediated mating disruption is the most promising technique available on grapes and is currently implemented on approximate to 140,000 ha in Europe. Experience from several growing areas confirms the importance of collaboration between research, extension, growers, and pheromone-supply companies for the successful implementation of the mating disruption technique. In the vineyards where mating disruption has been successfully applied as an areawide strategy, the reduction in insecticide use has improved the quality of life for growers, consumers, as well as the public living near wine-growing areas and has thereby reduced the conflict between agricultural and urban communities.
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| 41. |
- Witzgall, Peter
(författare)
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Sex pheromones and their impact on pest management
- 2010
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Ingår i: Journal of Chemical Ecology. - : Springer Science and Business Media LLC. - 0098-0331 .- 1573-1561. ; 36, s. 80-100
-
Tidskriftsartikel (refereegranskat)abstract
- The idea of using species-specific behavior-modifying chemicals for the management of noxious insects in agriculture, horticulture, forestry, stored products, and for insect vectors of diseases has been a driving ambition through five decades of pheromone research. Hundreds of pheromones and other semiochemicals have been discovered that are used to monitor the presence and abundance of insects and to protect plants and animals against insects. The estimated annual production of lures for monitoring and mass trapping is on the order of tens of millions, covering at least 10 million hectares. Insect populations are controlled by air permeation and attract-and-kill techniques on at least 1 million hectares. Here, we review the most important and widespread practical applications. Pheromones are increasingly efficient at low population densities, they do not adversely affect natural enemies, and they can, therefore, bring about a long-term reduction in insect populations that cannot be accomplished with conventional insecticides. A changing climate with higher growing season temperatures and altered rainfall patterns makes control of native and invasive insects an increasingly urgent challenge. Intensified insecticide use will not provide a solution, but pheromones and other semiochemicals instead can be implemented for sustainable area-wide management and will thus improve food security for a growing population. Given the scale of the challenges we face to mitigate the impacts of climate change, the time is right to intensify goal-oriented interdisciplinary research on semiochemicals, involving chemists, entomologists, and plant protection experts, in order to provide the urgently needed, and cost-effective technical solutions for sustainable insect management worldwide.
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| 42. |
- Messing, Ingmar
(författare)
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Uppsalaslätten i ett framtidsperspektiv
- 2011
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Ingår i: Att planera för 2000-talet - exemplet Uppsala. - 9789163389863 ; , s. 149-172
-
Bokkapitel (populärvet., debatt m.m.)
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| 43. |
- Pinzke, Stefan, et al.
(författare)
-
Arbetsolycksfall i jord- och skogsbruk 2004
- 2011
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Syftet med föreliggande projekt (som finansieras av Stiftelsen Lantbruksforskning (SLF)) var att genomföra en omfattande enkät- och intervjuundersökning rörande olycksfall i jord- och skogsbruk 2004 i nära samarbete med representanter från Arbetsmiljöverket, Statistiska Centralbyrån (SCB), LRF, forskare, arbetsmarknadens parter m fl. Målsättningen var att få fördjupade kunskaper om olycksfallens uppkomst och omfattning. Avsikten var också att ta fram en sammanställning av åtgärder som förebygger uppkomsten av olycksfall inom de olika verksamhetsgrenarna i jord- och skogsbruket. För projektets genomförande etablerades en projekt- & referensgrupp, bestående av representanter från Institutionen för jordbrukets biosystem och teknologi (JBT), Arbetsmiljöverket, SCB, och Lantbrukets arbetsmiljökommitté (LAMK). I samråd med referensgruppen bestämdes urval, enkätutformning, utskick och resultatsammanställning. Urval • Målpopulationen för undersökningen var lantbruksföretag som 2004 hade mer än två hektar åker, företag med stor djurbesättning (oavsett åkerarealens storlek) samt företag med trädgårdsodling (minst 0,3 hektar friland eller minst 200 kvadratmeter växthusyta). En urvalsram skapades som avgränsar, identifierar och möjliggör koppling till objekten i populationen. Urvalsramen i denna undersökning utgjordes av lantbruksregistret (LBR) 2003, som innehåller gröduppgifter från stödsystemet IAKS 2003. Det totala antalet företag i ramen blev slutligen 67 061. JBT och SCB beslöt att urvalsstorleken skulle vara 7 000 lantbruksföretag. Enkätutformning • Postenkäten bestod av ett dubbelsidigt blad med fjorton frågor. Den viktigaste frågan gällde om det förekommit några olyckor på företaget under 2004. Med olycksfall avsågs plötsligt inträffade olyckshändelser som medfört kroppsskada och som utgjort hinder i arbetet. Olyckorna rapporterades per verksamhet, dvs. för jordbruk, trädgårdsodling, skogsbruk och annan näringsverksamhet (inkomstbringande verksamhet som har direkt samband med lantbruket). Telefonintervjublanketten avsåg ytterligare ett tiotal frågor för respektive olycksfall på företaget. Förutom variabler som samlats in via blanketterna hämtades ett antal registervariabler från LBR. Dessa var bland annat företagets timklass och driftsinriktning. Utskick • Frågeblanketterna i huvudundersökningen sändes till urvalsföretagen via post. Via missivet ombads dessa besvara frågorna och återsända frågeblanketten till SCB. Företag som redovisat olycksfall kontaktades av telefonintervjuare från SCB. Då inhämtades utförligare uppgifter om respektive olycksfall. Sammantaget pågick insamlingsarbetet från slutet av januari till slutet av maj 2005. • Totalt besvarade 5646 företag (81% av 7000) postenkäten. Resultat • Ca 5000 olycksfall inträffade år 2004 på jordbruksföretag och jordbruksföretag i kombination med skogsbruk (varav ca 74% inom jordbruket och 18% inom skogsbruket). Jämförelse mellan denna undersökning och den arbetsskadestatistik som publiceras av Arbetsmiljöverket visar på stora skillnader. Antalet anmälda arbetsolyckor år 2004 inom jordbruk, skogsbruk, jakt och fiske är där ca 400. Detta innebär att endast 8% av de inträffade olycksfallen framkommer i den officiella arbetsskadestatistiken. • På ca 7% av alla jordbruksföretag inträffade minst ett olycksfall som medfört kroppsskada och som utgjort hinder i arbetet. • Vad gäller olyckor inom olika driftsinriktningar framgår det att det till stor del är jordbruksföretag med djurproduktion som drabbas, drygt 70%. • Allra högst andel olycksfall inträffade på företag med mjölkproduktion. Under 2004 drabbades 15% av alla gårdar med mjölkproduktion av ett eller flera olycksfall. • För inriktning mjölkkor inträffade flest olyckor vid mjölkning och hantering och förflyttning av djur (framförallt spark, tramp, slag, klämning o.d. från djur). Fallolyckshändelser (t.ex. halkning/snubbling) var relativt vanliga förutom vid mjölkning också vid utgödsling och stallrengöring samt vid kraftfoderhantering. • Övervägande olyckshändelser med andra husdjur var slag, spark o.d. från djur vid arbete med köttdjur och rekrytering av mjölkdjur (t.ex. spark, stångning) och med Suggor, galtar och smågrisar (t.ex. påsprungen, klämning). • Flest olyckshändelser inom inriktning grödor inträffade vid arbete, transport och lagring av grovfoder och strö (t.ex. balhantering) och tröskgrödor (t.ex. vid arbete med skördetröskan, spannmålskross, silotorn etc.) • Vid traktorkörning var det vanligaste olycksområdet till- och frånkoppling av redskap, maskin, vagn etc. • Inom området byggnader och inventarier inträffade flest olyckor i samband med reparationsarbeten. Vanliga händelser var fallolyckor (t.ex. från stegar), kontakt med föremål i vila (kläm- /skärskador) och träffad av flygande/fallande föremål (t.ex. föremål som lossnar vid reparationsarbete). • Sannolikt inträffade det färre än 100 olyckor inom trädgårdsodling under år 2004. • Vanliga olyckor vid arbete på friland och i växthus var fall- och snedtrampolyckor. • Ca 18% av samtliga olycksfall inträffade på jordbruksföretag med skogsbruk. • De vanligaste olyckorna inom skogsbruksverksamheten inträffade vid motormanuell avverkning, gallringsarbete speciellt vid fällning (t.ex. träffad av fallande träd) och kvistning (t.ex. olyckshändelse med motorsåg). • Inom skogsvård inträffade flera olyckshändelser vid arbete med röjning. • Flest olycksfall inom området energi inträffade i samband med vedklyvning (t.ex. klämskador i vedklyven) och vedkapning (t.ex. avkapade fingrar). • Ca 8% av de studerade olycksfallen inträffade i annan näringsverksamhet än jordbruk, trädgårdsodling eller skogsbruk. • Flest olycksfall i annan näringsverksamhet inträffade i samband med hästverksamhet speciellt händelser som slag, spark o.d. från djur (t.ex. spark/trampning, avkastning från hästen). • Två tredjedelar av olycksfallen inträffade i Götaland (66%). • En tredjedel av olycksfallen inträffade på företag där arbetet till minst 90% utfördes ensam av brukaren. • Ca hälften av jordbruksföretagen som rapporterade olycksfall hade anställda. • 81% av olycksfallen inträffade på företag där jordbruket var huvudsyssla. • Inom jordbruksverksamheten var det brukaren som främst drabbades av olycksfall (61%), familjemedlem (32%) samt anställda (6%). • Vid 60% av olycksfallen söktes sjukvård. • Den genomsnittliga frånvaron från arbetet var 14 dagar beräknat på samtliga verksamma. För de som minst en dag avstod från arbete till följd av olycksfallet var den genomsnittliga frånvaron 32 dagar. • Endast 16% av skadorna ledde till sjukskrivning. • Den genomsnittliga sjukskrivningstiden beräknat på samtliga verksamma inom jord- och skogsbruket var 9 dagar. I de fall då man blev sjukskriven minst en dag var den genomsnittliga sjukskrivningstiden 56 dagar. • 84% av olycksfallen drabbade män. • Nästan hälften (46%) av de olycksdrabbade var över 55 år gamla. • Den drabbade inom jordbruksverksamheten hade i genomsnitt 29 års yrkeserfarenhet, 76 % hade minst 10 års yrkeserfarenhet. • Två tredjedelar av olycksfallen inom jordbruket inträffade utomhus. • Vanligaste skadehändelse var djurrelaterade olycksfall (djurspark mm) följt av fall- och fordonsolyckor. • Vanligaste områden vid skadetillfället var byggnader/inventarier (27%), följt av mjölkkor (24%), andra djur (20%) samt traktorkörning (5%). • De olycksdrabbade inom jordbruket sökte sjukvård först vid sjukhus (65%), följt av vårdcentral (19%), i 8% av fallen tillkallades ambulans. • Vanliga kroppsdelar som skadades vid olyckor inom jord- och skogsbruket var hand, handled, fingrar (23%), axel, arm (13%), höftled, ben och knä (14%), fot, fotled och tår (13%) samt huvud (10%). • Vanligaste skadetyp inom jord- och skogsbruk var kross- eller klämskada (33%), följt av stukning m.m. (18%), sårskada (16%) samt skelettskada (14%) • Endast 11% av skadorna inom jord- och skogsbruket har anmälts till Försäkringskassan
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| 44. |
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| 45. |
- Dymitrow, Mirek, et al.
(författare)
-
Nutrition, health and climate: What have we learned so far?
- 2019
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Ingår i: Conference on Food Science and Nutrition: “Forum for food science and nutrition for a better tomorrow”, 25–26 February 2019, Rome, Italy.
-
Konferensbidrag (refereegranskat)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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| 46. |
- Svensson, Teresia, 1975-
(författare)
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Measurements and fluxes of volatile chlorinated organic compounds (VOCl) from natural terrestrial sources : Measurement techniques and spatio-temporal variability of flux estimates
- 2019
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Volatile organic compounds (VOCs) and especially chlorinated VOCs (VOCls) are regarded as en viron mental risk substances in water bodies due to their toxic characteristics. Even in the atmosphere they highly impact atmospheric chemistry, e.g. degrading the ozone layer. Several studies have convincingly identified a number of natural VOCl sources thereby challenging the view of VOCls as only produced by humans. Yet, fundamental knowledge is still missing concerning the emission, distribution and the natural abundance of VOCls, especially regarding the high spatial and temporal variability of emissions from terrestrial sources. In the nuclear industry, Cl36 is a dosedominating radionuclide in some waste, and this adds to the need to better understand the processes, transport and fate of chlorine in the bio sphere. In this report 38 studies on VOCl flux measurement estimates were reviewed to summarize the current knowledge on spatiotemporal variations of different VOCls and various measurement tech niques.Chloromethane is the most studied VOCl compound and chloroform, the second most studied. A few other studies have estimated fluxes of additional VOCls such as tetrachloromethane (CCl4), methyl chloroform (CH3CCl3), tetrachloroethane (C2H2Cl4), freons (CFCs), chloroethane (C2H5Cl), bromodichloromethane (CHBrCl2). Studies were conducted in climates and terrestrial ecosystems ranging from arctic tundra to tropical rainforest but most studies focus on the temperate climate region. Wetlands and coastal systems dominate the studied ecosystems. Flux chambers are the most common method for investigation of the soilatmosphere exchange of VOCls, but a few studies used soil gas profiles and one the Relaxed Eddy Accumulation (REA) technique. Methodological uncertainties are mainly related to sample contamination, few replicates, chamber design, and chamber deployment (the time of measurement) effects on the soilatmosphere exchange itself. Despite the many challenges in measuring VOCls and estimating the fluxes, a substantial part of the chlorine in terrestrial ecosystems, and especially from wetlands and coastal areas, is emitted to the atmosphere as VOCls. In inland forested ecosystems, the release of Cl to the atmosphere could be as much as 0.1 g m–2, which is 40 % of the wet deposition and there are studies that suggest that freshwater wetlands are much larger source of chlorine in the atmosphere than previously understood.
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| 47. |
- Flysjö, A., et al.
(författare)
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How does co-product handling affect the carbon footprint of milk? Case study of milk production in New Zealand and Sweden
- 2011
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Ingår i: International Journal of Life Cycle Assessment. - : Springer Science and Business Media LLC. - 1614-7502 .- 0948-3349. ; 16:5, s. 420-430
-
Tidskriftsartikel (refereegranskat)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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| 48. |
- Flysjö, A., et al.
(författare)
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The impact of various parameters on the carbon footprint of milk production in New Zealand and Sweden
- 2011
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Ingår i: Agricultural Systems. - : Elsevier BV. - 1873-2267 .- 0308-521X. ; 104:6, s. 459-469
-
Tidskriftsartikel (refereegranskat)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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| 49. |
- Trigo, João Pedro, 1995, et al.
(författare)
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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
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Ingår i: Food Chemistry. - : Elsevier BV. - 0308-8146 .- 1873-7072. ; 404
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Tidskriftsartikel (refereegranskat)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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| 50. |
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