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Ms. Emily McDonald
University of Michigan School of Public Health

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0 Food Systems
0 Health
0 Nutrition
0 environmental impact
0 life cycle assessment (LCA)

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Short Biography

Second-year MPH student at the University of Michigan School of Public Health in the department of Environmental Health Sciences.

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Journal article
Published: 13 November 2020 in Sustainability
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Food and diet life cycle assessment (LCA) studies offer insights on the environmental performance and improvement potential of food systems and dietary patterns. However, the influence of ingredient resolution in food-LCAs is often overlooked. To address this, four distinct decomposition methods were used to determine ingredients for mixed dishes and characterize their environmental impacts, using the carbon footprint of the U.S. daily pizza intake as a case study. Pizza-specific and daily pizza intake carbon footprints varied substantially between decomposition methods. The carbon footprint for vegetarian pizza was 0.18–0.45 kg CO2eq/serving, for meat pizza was 0.56–0.73 kg CO2eq/serving, and for currently consumed pizzas in the U.S. (26.3 g/person/day; 75 pizzas types) was 0.072–0.098 kg CO2eq/person/day. These ranges could be explained by differences in pizza coverage, ingredient resolution, availability of ingredient environmental information, and ingredient adjustability for losses between decomposition methods. From the approaches considered, the USDA National Nutrient Database for Standard Reference, which reports standardized food recipes in relative weights, appears to offer the most appropriate and useful food decompositions for food-LCAs. The influence and limitations of sources of reference flows should be better evaluated and acknowledged in food and diet LCAs.

ACS Style

Katerina Stylianou; Emily McDonald; Victor Fulgoni Iii; Olivier Jolliet. Standardized Recipes and Their Influence on the Environmental Impact Assessment of Mixed Dishes: A Case Study on Pizza. Sustainability 2020, 12, 9466 .

AMA Style

Katerina Stylianou, Emily McDonald, Victor Fulgoni Iii, Olivier Jolliet. Standardized Recipes and Their Influence on the Environmental Impact Assessment of Mixed Dishes: A Case Study on Pizza. Sustainability. 2020; 12 (22):9466.

Chicago/Turabian Style

Katerina Stylianou; Emily McDonald; Victor Fulgoni Iii; Olivier Jolliet. 2020. "Standardized Recipes and Their Influence on the Environmental Impact Assessment of Mixed Dishes: A Case Study on Pizza." Sustainability 12, no. 22: 9466.