Blondin Stacy A, Cash Sean B, Goldberg Jeanne P, Griffin Timothy S, Economos Christina D
All of the authors are with Tufts University Friedman School of Nutrition Science and Policy, Boston, MA.
Am J Public Health. 2017 Apr;107(4):590-592. doi: 10.2105/AJPH.2016.303647. Epub 2017 Feb 16.
To measure fluid milk waste in a US School Breakfast in the Classroom Program and estimate its nutritional, economic, and environmental effects.
Fluid milk waste was directly measured on 60 elementary school classroom days in a medium-sized, urban district. The US Department of Agriculture nutrition database, district cost data, and carbon dioxide equivalent (COe) emissions and water footprint estimates for fluid milk were used to calculate the associated nutritional, economic, and environmental costs.
Of the total milk offered to School Breakfast Program participants, 45% was wasted. A considerably smaller portion of served milk was wasted (26%). The amount of milk wasted translated into 27% of vitamin D and 41% of calcium required of School Breakfast Program meals. The economic and environmental costs amounted to an estimated $274 782 (16% of the district's total annual School Breakfast Program food expenditures), 644 893 kilograms of COe, and 192 260 155 liters of water over the school year in the district.
These substantial effects of milk waste undermine the School Breakfast Program's capacity to ensure short- and long-term food security and federal food waste reduction targets. Interventions that reduce waste are urgently needed.
测量美国“课堂内学校早餐计划”中的液态奶浪费情况，并估算其对营养、经济和环境的影响。
在一个中等规模的市区，对60个小学课堂日的液态奶浪费情况进行直接测量。利用美国农业部营养数据库、学区成本数据以及液态奶的二氧化碳当量（COe）排放和水足迹估算值，来计算相关的营养、经济和环境成本。
提供给学校早餐计划参与者的牛奶总量中，45%被浪费。提供的牛奶中浪费的比例要小得多（26%）。浪费的牛奶量相当于学校早餐计划餐食所需维生素D的27%和钙的41%。在该学区一学年期间，经济和环境成本估计达274,782美元（占该学区学校早餐计划年度食品总支出的16%）、644,893千克二氧化碳当量以及192,260,155升水。
牛奶浪费产生的这些重大影响削弱了学校早餐计划确保短期和长期粮食安全以及实现联邦减少食物浪费目标的能力。迫切需要采取减少浪费的干预措施。
