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The online version of this article (doi:10.1007/s11367-014-0762-x) contains supplementary material, which is available to authorized users.
In this article, we present an innovative way of deriving comparable functional systems for comparative life cycle assessments (LCAs) of food products. We define the functional unit as the contribution of one or more foods to the nutrient composition of a weekly diet and, after a product substitution, employ a product system expansion approach to search for an alternative set of products which provides an equivalent nutritional composition.
Replacement is regarded within the context of a weekly diet. The comparable diet is a solution to a linear problem which finds the diet that is most similar to the starting one, subject to nutritional and/or other constraints that guarantee a minimum dietary quality. The formulation gives priority to selecting food products according to popularity.
We illustrate our method with two examples. We show that a baseline diet containing 3.6 servings of apples a week is equivalent to a similar diet in which the apples are replaced with 3.6 servings of oranges and servings of strawberry and kiwi are removed. These changes are necessary mainly because of differences in the vitamin C content between apples and oranges. The second example is a replacement of all meat in a weekly diet by a soy-based meat substitute. In this case, additional fish products need to be consumed to make up for a lack of selenium and essential amino acids.
We present an innovative and objective way to overcome the challenge of comparing two or more food products in a comparative LCA. Our approach is systematic and finds the alternative diet that best meets the nutritional criteria as well as reflecting the food preferences of the population. The method selects products according to the role they play in the dietary pattern. Moreover, the method is flexible enough to allow for different selection criteria and other nutritional and non-nutritional constraints.
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Blonk H, Luske B, Kool A (2009) Milieueffecten van enkele populaire vissoorten. Blonk Milieu Advies, Gouda
Broekema R, Blonk H (2009) Milieukundige vergelijking van vleesvervangers. Gouda, the Netherlands: Blonk Milieu Advies, Gouda. Retrieved from http://blonkconsultants.nl/publicaties/2009/vleesvervangers-duurzaam.html
Heller MC, Keoleian GA (2012) A novel nutrition-based functional equivalency metric for comparative life cycle assessment of food. Proceedings 8th Int. Conference on LCA in the Agri-Food Sector
Ingwersen WW (2012) Life cycle assessment of fresh pineapple from Costa Rica. J Clean Prod 35:152–163 CrossRef
Macdiarmid JI, Kyle J, Horgan GW, Loe J, Fyfe C, Johnstone A, McNeill G (2012) Sustainable diets for the future: can we contribute to reducing greenhouse gas emissions by eating a healthy diet? Am J Clin Nutr 96(3):632–639 CrossRef
Maillot M, Vieux F, Amiot MJ, Darmon N (2010) Individual diet modeling translates nutrient recommendations into realistic and individual-specific food choices. Am J Clin Nutr 91(2):421–430 CrossRef
Martínez-Blanco J, Antón A, Rieradevall J, Castellari M, Muñoz P (2010) Comparing nutritional value and yield as functional units in the environmental assessment of horticultural production with organic or mineral fertilization. Int J Life Cycle Assess 16(1):12–26 CrossRef
Milieucentraal (2012) Vegetable and fruit calendar/Groente- en fruitkalender. Retrieved from http://www.milieucentraal.nl/themas/milieubewust-eten/groente-en-fruitkalender
Ponsioen T, Broekema R, Blonk H (2010) Koeien op gras (Vol. 2010, p. 51). Gouda, the Netherlands
RIVM. (2011) NEVO-online version 2011/3.0. Retrieved January 31, 2013, from http://nevo-online.rivm.nl/
RIVM (2012) consumption_food_nut.dat Version 20111125, part of the Dutch National Food Consumption Survey 2007–2010. Bilthoven, the Netherlands
Roy P, Nei D, Orikasa T, Xu Q, Okadome H, Nakamura N, Shiina T (2009) A review of life cycle assessment (LCA) on some food products. J Food Eng 90(1):1–10 CrossRef
Saxe H, Larsen TM, Mogensen L (2012) The global warming potential of two healthy Nordic diets compared with the average Danish diet. Clim Chang 116(2):249–262 CrossRef
Schau EM, Fet AM (2008) LCA studies of food products as background for environmental product declarations. Int J Life Cycle Assess 13(3):255–264 CrossRef
Sichieri R (2002) Dietary patterns and their associations with obesity in the Brazilian city of Rio de Janeiro. Obes Res 10(1):42–48 CrossRef
Smedman A, Lindmark-Månsson H, Drewnowski A, Edman A-KM (2010) Nutrient density of beverages in relation to climate impact. Food Nutr Res 54:1–8 CrossRef
Van Rossum CTM, Fransen HP, Verkaik-Kloosterman J, Buurma-Rethans E, Ocké MC (2011) Dutch national food consumption survey 2007–2010. RIVM, Bilthoven
- Comparing apples with oranges: on the functional equivalence of food products for comparative LCAs
- Springer Berlin Heidelberg
The International Journal of Life Cycle Assessment
Print ISSN: 0948-3349
Elektronische ISSN: 1614-7502