| 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. |
- 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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| 6. |
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| 7. |
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| 8. |
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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. |
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| 13. |
- 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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| 14. |
- 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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| 15. |
- 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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| 16. |
- 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
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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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| 17. |
- Messing, Ingmar, et al.
(författare)
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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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| 18. |
- Carlsson, Anders
(författare)
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Plant oils as feedstock alternatives to petroleum - A short survey of potential oil crop platforms
- 2009
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Ingår i: Plant Breeding. - : Elsevier BV. - 0179-9541 .- 1439-0523. ; 91, s. 665-670
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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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| 19. |
- 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
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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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| 20. |
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| 21. |
- 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
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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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| 22. |
- 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
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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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| 23. |
- Daneshi, Ali, et al.
(författare)
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Energy assessment in product chain of pasteurized milk: agronomy, animal farm and processing plant
- 2014
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Ingår i: Ecopersia. - 2322-2700. ; 2:3, s. 697-714
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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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| 24. |
- Drottberger, Annie, et al.
(författare)
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Alternative Food Networks in Food System Transition-Values, Motivation, and Capacity Building among Young Swedish Market Gardeners
- 2021
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Ingår i: Sustainability. - : MDPI AG. - 2071-1050. ; 13
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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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| 25. |
- Roleda, Michael Y., et al.
(författare)
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Chemical profiling of the Arctic sea lettuce Ulva lactuca (Chlorophyta) mass-cultivated on land under controlled conditions for food applications
- 2021
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Ingår i: Food Chemistry. - : Elsevier BV. - 0308-8146 .- 1873-7072. ; 341
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Tidskriftsartikel (refereegranskat)abstract
- The increasing use of seaweeds in European cuisine led to cultivation initiatives funded by the European Union. Ulva lactuca, commonly known as sea lettuce, is a fast growing seaweed in the North Atlantic that chefs are bringing into the local cuisine. Here, different strains of Arctic U. lactuca were mass-cultivated under controlled conditions for up to 10 months. We quantified various chemical constituents associated with both health benefits (carbohydrates, protein, fatty acids, minerals) and health risks (heavy metals). Chemical analyses showed that long-term cultivation provided biomass of consistently high food quality and nutritional value. Concentrations of macroelements (C, N, P, Ca, Na, K, Mg) and micronutrients (Fe, Zn, Co, Mn, I) were sufficient to contribute to daily dietary mineral intake. Heavy metals (As, Cd, Hg and Pb) were found at low levels to pose health risk. The nutritional value of Ulva in terms of carbohydrates, protein and fatty acids is comparable to some selected fruits, vegetables, nuts and grains.
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| 26. |
- 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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| 27. |
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| 28. |
- Linner, Harry, et al.
(författare)
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Agricultural land needs protection
- 2011
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Ingår i: NJF Report. - 1653-2015. ; 7, s. 29-34
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Annan publikation (övrigt vetenskapligt/konstnärligt)
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| 29. |
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| 30. |
- 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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| 31. |
- Messing, Ingmar, et al.
(författare)
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Viktig åkermark hotas
- 2010
-
Ingår i: Upsala nya tidning. - 1104-0173.
-
Tidskriftsartikel (populärvet., debatt m.m.)
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| 32. |
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| 33. |
- 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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| 34. |
- Burri, Stina C.M., et al.
(författare)
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Antioxidant capacity and major phenol compounds of horticultural plant materials not usually used
- 2017
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Ingår i: Journal of Functional Foods. - : Elsevier BV. - 1756-4646. ; 38, s. 119-127
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Tidskriftsartikel (refereegranskat)abstract
- Horticultural plant materials not usually used from onion, carrot, beetroot, sea buckthorn, black and red currants as well as a wastewater powder from olive oil production were analyzed for total phenols content (FC), ferric reducing ability of plasma (FRAP), radical scavenging capacity (ABTS), and for major phenolic compounds by HPLC-MS. Antioxidant capacity and phenol content varied significantly between species and cultivars, with extracts of sea buckthorn leaves being superior. In different species, different phenolic compounds were closely associated with FRAP, ABTS and FC. For instance, hydrolysable tannins were major antioxidants in sea buckthorn whereas quercetin was the major antioxidant in onion peel and skin. This study shows that horticultural plant materials usually left in the field or waste materials from processing may have high antioxidant properties, and that extracts of these materials therefore could be of potential interest for development of antioxidant food additives.
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| 35. |
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| 36. |
- Ekelund Axelson, Lena, et al.
(författare)
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Klimatmärkt livsmedelsbutik : så kan handeln bidra till minskad klimatpåverkan genom att underlätta konsumentens val
- 2015
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Klimathotet påkallar stora förändringar i konsumtionsmönster och kostvanor. Projektet Klimatmärkt livsmedelsbutik har haft som syfte att utreda hur handeln kan bidra till minskad klimatpåverkan genom att underlätta konsumentens val. Förutom klimatpåverkan orsakar livsmedelsproduktionen också annan miljöpåverkan, såsom övergödning, spridning av bekämpningsmedel och förlust av biologisk mångfald. Att bara fokusera på klimatet riskerar förbättring på ett ställe och försämring på ett annat. Därför beslutades tidigt att projektet även måste belysa dessa potentiella målkonflikter. Två delområden har ingått; miljökonsekvensanalyser samt konsumentbeteende och marknadskommunikation, vilket har krävt en tvärvetenskaplig ansats och olika forskningsmetoder. Projektet tog sin början i miljökonsekvensanalyser av olika livsmedels miljöpåverkan med hjälp av livscykelanalys, vars resultat sedan utgjorde informationsunderlag, bl.a en Köttguide, för kommunikationen till konsument. Inom konsumentbeteende och marknadskommunikation har såväl kvalitativ som kvantitativ metod använts. För att få en bild över vad som kommuniceras i butik genomfördes intervjuer med butiksansvariga och en observationsstudie i 30 större europeiska butiker. Enkätundersökningar gjordes med 184 resp. 470 konsumenter. Köttguiden testades i fokusgruppintervjuer. Kvantitativa studier gjordes med 222 slumpvis utvalda personer för att utreda hur intentionen att ändra sin köttkonsumtion kan förutsägas och med drygt 600 konsumenter i ett butiksexperiment för att studera effekten av naturljud på konsumenters betalningsvilja för klimatvänliga respektive ekologiska grönsaker. Resultat från konsumentstudierna visade på viss förvirring kring märkning och på behovet av ett enklare signalsystem. De vanligaste svaren kring vilka klimatåtgärder som är viktigast var att köpa närproducerad mat, köpa frukt och grönt efter säsong och undvika att slänga mat, medan den viktiga frågan om köttet hamnade längre ner på listan. Livscykelanalyser, kompletterade med litteraturstudier, visar att säsongsmässig konsumtion av grönsaker visserligen kan minska utsläppen, men att den minskningen är liten i förhållande till den av minskad köttkonsumtionen. Den viktigaste åtgärden för att reducera matens klimatpåverkan är att minska konsumtionen av animaliska produkter och helst ersätta dessa med vegetabiliska alternativ. Butiksobservationerna och intervjuer med butiksansvariga visade att det i stort sett saknades vägledning i butikerna. Studierna underströk behovet av Köttguiden, en vägledning som rangordnar olika proteinkällor (även vegetabiliska) i förhållande till klimat, biologisk mångfald, kemiska bekämpningsmedel samt djurskydd och bete, med hjälp av ett tydligt signalsystem (trafikljus). Matinköp och val av livsmedel styrs i stor utsträckning av preferenser och vanor, som kan vara svåra att förändra. För att övertyga konsumenter om att förändra sitt beteende måste man kommunicera budskap som bidrar till ökad motivation till förändring.. Med hjälp av Protection Motivation- teorin undersöktes vilka faktorer som förutsäger individers avsikter att ändra sitt beteende, efter att de blivit fakta kring klimathotet och matens klimatpåverkan har presenterats för dem. Studien visade att budskap i syfte att uppmuntra en mindre klimatbelastande livsmedelskonsumtion, måste vara sådana att konsumenterna känner att en sådan förändring är möjlig och att den får effekt. Resultaten tyder också på att människor bryr sig mer om klimatförändringarnas risker för andra - för personer i andra länder eller för djurlivet – än för dem själva eller deras närstående. En slutsats blir då att altruistiska snarare än egoistiska argument bör lyftas fram i marknadsföringen. I ett butiksexperiment användes skyltning och naturljud – fågelsång-, för att testa om detta gav en koppling till naturen och därmed ökade viljan att köpa produkter, i detta fall morötter, märkta ”klimatvänliga”. Fågelsången hade ingen inverkan på konsumenternas koppling till naturen. Men bland de konsumenter som uttryckte en hög samhörighet med naturen, fanns det en högre betalningsvilja för klimatmärkta produkter än för produkter utan märkning, jämfört med de konsumenter som uttryckte en låg samhörighet med naturen. När konsumenterna, i ett butiksexperiment med mjölk, erbjöds information om en varas lägre klimatpåverkan på ett enkelt sätt precis vid köptillfället ökade försäljningen av den varan, men samtidigt minskade försäljningen av andra miljömärkta varor. Klimatbudskapen är komplicerade och konsumenten har oklara uppfattningar om hur maten påverkar klimatet. Budskapen och valen i butik måste vara enkla: Att fokusera på det som konsumenten tror sig klara av och som de tror kan få effekt, är viktigt. Köttguiden har rönt stor uppmärksamhet och testats med positivt resultat som ett hjälpmedel för klimatsmarta matval. Rekommendationerna till handeln kan sammanfattas: Gör det enkelt att välja och laga vegetariskt, använd Köttguiden bland personalen, se över köttsortimentet, öka försäljningen av baljväxter, rotfrukter, frukt och grönsaker och använd ekologiskt, säsong och hälsa som indirekta klimatbudskap.
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| 37. |
- Fernqvist, Fredrik, et al.
(författare)
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Potatisens framtid en studie om konsumentens val : en studie om konsumentens val
- 2014
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Ingår i: LTV-fakultetens faktablad.
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Annan publikation (populärvet., debatt m.m.)abstract
- Potatis är en av våra viktigaste kolhydratkällor och har traditionellt en viktig position i den svenska kosthållningen. De senaste årtiondena har dock konsumtionsmönstret av kolhydratrika livsmedel förändrats drastiskt. Framförallt har konsumtionen av färsk matpotatis minskat till förmån för andra alternativ som bröd, pasta och ris och beredda potatisprodukter som pommes frites och chips. Mellan 1960 och 2010 har konsumtionen av färsk matpotatis minskat från 89 till 43 kg per person och år (Jordbruksverket, 2013). Trenden är likartad även i resten av Europa och Nordamerika. Hur skall förändringarna i konsumtionen förklaras? Anledningar som nämnts är bland annat att konsumenterna söker bekvämlighet och vill ha fler färdiga produkter i den stressade vardagen (Keijbets, 2008). De skulle också kunna bero på ett ökat intresse för hälsa och näringsintag, vilket kan påverka både i positiv och negativ riktning (Stubenitsky & Mela, 2000), eller på grund av alternativa dieter som stenålderskost, GI (Glycemic Index) och LCHF (Low Carb, High Fat). Vid SLU i Alnarp har ett flertal projekt de senaste åren handlat om konsumenters inställning till matpotatis. I ett faktablad från Tillväxt Trädgård (Spendrup, Andersson och Ekelund, 2011) har en mer genomgripande beskrivning getts över svensk produktion och konsumtion. Potatis är en viktig ekonomisk produkt och den inhemska marknaden är stor. Värdet av produktionen är omkring 1,5 miljarder kronor (LRF, 2010), medan självförsörjningsgraden ligger på 90 procent (SJV, 2010). Frågan om hur svensk matpotatis som produkt kan utvecklas och möta konkurrensen från alternativen är därför högst aktuell och viktig att besvara för branschens långsiktiga konkurrenskraft.
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| 38. |
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| 39. |
- Iwarsson, Mattias
(författare)
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'Norby' – en ny svarta vinbärssort
- 2011
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Ingår i: Hemträdgården. - 0018-0343. ; , s. 21-22
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- This article describes a new variety of Black Currant called Ribes nigrum ‘Norby’. It was found 30 years ago in the quarter of Uppsala called Norby. It was found on a waste place in the Town forest (Stadsskogen) and is probably an old variety more than 60 years old or a new variety raised from seeds. The new variety is called ‘Norby’ from the original locality. It is an upright growing shrub, which is resistant to gall mites and it is also well resistant to mildew. A herbarium specimen, Iwarsson 2011, of the new variety will be deposited in (UPS), Museum of Evolution, Botany at Uppsala University
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| 40. |
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| 41. |
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| 42. |
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| 43. |
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| 44. |
- Lv, Yanrong
(författare)
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Triterpenes and phenolic compounds in apple fruit (Malus domestica Borkh.) : variation due to cultivar, sun exposure, rootstock, harvest maturity, bruising, fungi inoculation, ozone treatment and storage conditions
- 2016
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Apple (Malus × domestica Borkh.), a popular and widely cultivated fruit world-wide, contains bioactive triterpenes and phenolic compounds with potentially valuable pharmacological functions. This thesis investigated the effects of pre-harvest and postharvest factors on concentrations of these bioactive compounds in apples. It also studied the effect of ozone treatment, before or during storage, combined with cold storage on triterpene and phenolic compound concentrations in apples and the antifungal activity of triterpene-enriched crude extract. Concentrations of two major triterpenes, oleanolic acid and ursolic acid, in apple peel varied significantly between cultivars, with the late-ripening cultivar ‘Gloster’ having higher concentrations than the earlier ripening ‘Discovery’ and ‘Aroma’. The concentrations were higher in peel from the shaded side than from the sun-exposed side of both ‘Discovery’ and ‘Gloster’ apples. Harvest time and storage methods had minor effects on the concentrations, although some between-cultivar variation was observed. Inoculation with Penicillium expansum decreased oleanolic acid concentration in ‘Discovery’ and ‘Gloster’ at harvest in one study year and decreased ursolic acid concentration in ‘Aroma’ after cold storage. Oleanolic acid and ursolic acid concentrations in apple peel showed non-consistent changes in different cultivars after bruising. On four of six harvest occasions during a two-year study of ‘Aroma’, the concentrations were higher in peel of apples from rootstock ‘MM106’ than from ‘M9’. Total polyphenolics concentration was higher in ‘Amorosa’ peel than in ‘Santana’ peel at harvest and after four months of storage. Ursolic acid concentration in apple peel was almost unaffected by ozone treatment, but oleanolic acid concentration showed differing responses to varying ozone application. The concentrations of different bioactive compounds both increased and decreased after ozone treatment, but the changes were within the range of fluctuations observed in untreated apples during storage. Low-dose ozone treatment (0.5 ppm gaseous ozone one hour per day) during four months of cold storage did not affect total polyphenolics in ‘Amorosa’ and ‘Santana’ flesh, but increased total polyphenolics in ‘Amorosa’ peel and decreased them in ‘Santana’. Short-term ozone treatment (2.5 ppm gaseous ozone and ozonated water, alone or combined) before one month of cold storage reduced total polyphenolics content in apple peel, while inconsistent responses were observed in apple flesh. Triterpene-enriched water significantly inhibited mycelial growth of all pathogens studied, but inhibited conidia production differently in each pathogen.
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| 45. |
- Majaliwa, Nuria, 1980, et al.
(författare)
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Effect of cultivar and ripening on the polyphenol contents of East African highland bananas (Musa spp.)
- 2021
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Ingår i: International Food Research Journal. - 1985-4668 .- 2231-7546. ; 28:3, s. 479-488
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Tidskriftsartikel (refereegranskat)abstract
- East African highland bananas (EAHBs) contain high amount of phenolics especially tannins, and are used to produce low-viscosity banana juice by a purely mechanical process. Occasional juice failure and cloudy appearance are the major problems facing juice production. The present work thus examined the variations in phenolic content of EAHB cultivars and their changes during ripening. The aim was to obtain a better knowledge of the various forms and amounts of phenolic compounds in different EAHBs, and how these properties may affect the ability of cultivars to produce low viscosity banana juice. Eleven banana cultivars including juice-producing and cooking bananas were harvested at the green maturity stage and analysed for total phenolic content (TPC), tannin content (TC), and tannin monomers at different ripening stages for five days. Analyses of TPC and TC were performed using the Folin-Ciocalteu method, whereas tannin monomers were identified by High-Performance Liquid Chromatography (HPLC) with UV detection. Multivariate analysis of variance was used to evaluate the relationship between cultivar, ripeness stage, and TPC/TC. A substantial difference in TPC was observed between juice-producing and cooking cultivars. The highest TPC was found in the juice-producing cultivar Kibungara (360.68 +/- 17.12 mg GAE/100 g) at day 5 (the ripe stage), while the lowest TPC (8.67 +/- 0.22 mg GAE/100 g) was observed in the cooking cultivar Malindi at ripening day 5. The results revealed that TPC and TC of banana pulp seemed to be more related to cultivar (p <= 0.05) than physiological changes during ripening (p >= 0.05). Further, HPLC analysis showed that among the individual catechins, gallocatechin was the predominant monomer in juice-producing cultivars, whereas in cooking cultivars, gallic acid was dominant. The present work indicated that high amount of total phenolic such as tannins especially gallocatechin in juice-producing banana cultivars favour the release of banana juice, and that analysis of phenolic compounds will provide a basis in the selection of banana cultivars with high potential for juice production.
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| 46. |
- Mogren, Lars, et al.
(författare)
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Placed Nitrogen Starter Fertilizer Strategy for Field Grown Iceberg Lettuce (Lactuca sativa)
- 2012
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Ingår i: Acta Horticulturae. - 0567-7572 .- 2406-6168. ; 936, s. 299-304
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Konferensbidrag (refereegranskat)abstract
- The production of iceberg lettuce (Lactuca sativa) has been shown to be a potential source of nitrogen (N) leaching to ground water. Growers are concerned that reduced levels of N will lead to reduced yield and lowered quality. Experiments with a wide range of N levels the previous season showed that placed N fertilizer at planting had potential to reduce total N levels needed. This project was designed to verify these findings with use of commercially used, and lower, levels on N. The N content in the lettuce dry material at harvest and the N content in the soil profile (N-min) at several stages during the season were studied. By using placed starter N fertilizer, the total amount of N applied could be reduced by more than 25% without loss in yield or lowered quality. By using this strategy the risk of N leaching from the field could be significantly reduced at planting, during growth and after harvest.
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| 47. |
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| 48. |
- Mujaju, Claid, et al.
(författare)
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Genetic diversity among and within watermelon (Citrullus lanatus) landraces in Southern Africa
- 2011
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Ingår i: Journal of Horticultural Science and Biotechnology. - : Informa UK Limited. - 1462-0316 .- 2380-4084. ; 86, s. 353-358
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Tidskriftsartikel (refereegranskat)abstract
- Genetic diversity in watermelon (Citrullus lanatus) was estimated among 213 seedlings from 22 accessions collected in Botswana, Namibia, South Africa, Zambia, and Zimbabwe. The accessions consisted of two types of watermelon landraces: sweet watermelon (C. lanatus var. lanatus) and cow-melon (C. lanatus var. citroides), also known as citron melon. In addition, three commercial varieties of C. lanatus var. lanatus from the USA were included for comparison. Ten simple sequence repeat (SSR; microsatellite) loci detected a total of 153 alleles. The polymorphic information content (PIC) ranged from 0.833 - 0.963, suggesting sufficient discriminatory power. Both a cluster analysis and a principal co-ordinate analysis produced two major clusters, one with the 13 cow-melon accessions and the other with the 12 sweet watermelon accessions. Within the sweet watermelon cluster, the three US cultivars grouped together with the Botswana accessions. Some of the other accessions also grouped according to their country of origin, but others did not. Within-accession diversity parameters showed that those sweet watermelon accessions found in traditional agrosystems were just as genetically variable as the cow-melon accessions.
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| 49. |
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| 50. |
- Nadeau, Elisabet, et al.
(författare)
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Effects of sulphur fertilization in organically cultivated faba bean
- 2020
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Ingår i: Agricultural and Food Science. - : Agricultural and Food Science. - 1459-6067 .- 1795-1895. ; 29, s. 471–481-
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Tidskriftsartikel (refereegranskat)abstract
- Optimal seed yield and quality requires that the sulphur (S) demand of faba bean (Vicia faba L.) is ensured. The ef-fect of S fertilization on organic cultivated faba bean was investigated under field conditions during two growing seasons (2017–2018), in Sweden. Kieserite (MgSO4) and gypsum (CaSO4) were applied at a rate of 20 and 40 kg ha-1to study the effect on faba bean growth, yield, crude protein (CP) content and amino acid (AA) composition. Gyp-sum and kieserite significantly increased S concentration of faba bean dry matter (DM) in 2017. The S concentra-tion ranged from 0.20% to 0.23% of DM compared to 0.18% in the untreated control. In 2018, kieserite application at 40 kg ha-1 significantly increased S concentration to 0.15% compared to 0.12% in the untreated control. The faba bean plants did, however, not respond neither with increased growth nor increased seed yield. The seed quality in terms of CP and S-containing AA, was not affected by S fertilization, however, significant differences were observed between the experimental sites.
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