Universidade Federal de Santa Maria, Campus Santa Maria, Av. Roraima n° 1000, Cidade Universitária, Bairro Camobi, Santa Maria - RS, CEP: 97105-900, Rio Grande do Sul, Brazil.
Universidade de Lisboa, Instituto Superior de Agronomia, LEAF, Tapada da Ajuda, 1349-017 Lisboa, Portugal.
Waste Manag. 2018 Jun;76:28-38. doi: 10.1016/j.wasman.2018.02.044. Epub 2018 Mar 2.
Food waste has important environmental, social and economic impacts and increasing attention has been given lately to the unparalleled scale of food waste in the food supply chain worldwide. An initiative aiming to reduce food waste was tested at the School of Agriculture canteen (University of Lisbon, Portugal). The "Clean dish, clean conscience!" initiative consisted of a simple and inexpensive education campaign to raise awareness of reducing plate waste, by establishing the connection between food waste and personal behaviour. As a first stage plate waste from canteen users was measured over a 10 day period. After this period, a waste consumption index and per capita waste consumption were calculated to evaluate the level of satisfaction of the consumer and the related concern about food wastage, and was classified as Bad. After this first stage it was concluded that the users did not have strong convictions about avoiding food waste. During the second stage of the project an education campaign was implemented with plate waste being monitored for a further 16 days to assess the effectiveness of the campaign. The approach consisted of displaying simple and affordable informative posters in strategic areas of the canteen with simple messages reminding not to accept food they knew they would not eat. This led to a mean reduction in the waste consumption index of ∼15%. A parallel action encouraging separation of organic and inorganic waste was implemented as well, with an active participation of >70% of the users. The initiative achieved its objective of reducing plate waste by raising awareness of the daily food waste problem at the institution's canteen and by suggesting "how-to" actions for reducing such waste. This study showed how avoidable waste can be reduced simply by making students aware of the topic of food waste. Simple strategies may be useful to improve behaviours and increase sustainability of the canteens at Universities although this proved to be only efficient with the collaboration of the canteen staff that needs solid education. From the results, a set of measures was presented to the University Social Services for adoption to ensure a permanent reduction of food waste and recyclables in the University canteens.
食物浪费对环境、社会和经济都有重要影响，最近人们越来越关注全球食品供应链中前所未有的食物浪费规模。一项旨在减少食物浪费的倡议在农业学校食堂（葡萄牙里斯本大学）进行了测试。“清洁盘子，清洁良心！”倡议是一项简单且廉价的教育活动，旨在通过建立食物浪费与个人行为之间的联系，提高减少餐盘浪费的意识。作为第一阶段，在 10 天的时间里测量了食堂用户的餐盘浪费量。在此期间，计算了浪费消耗指数和人均浪费量，以评估消费者的满意度和对食物浪费的关注程度，并将其归类为“差”。在第一阶段之后，得出的结论是，用户没有强烈的信念来避免食物浪费。在项目的第二阶段，实施了一项教育活动，进一步监测餐盘浪费情况 16 天，以评估该活动的有效性。该方法包括在食堂的战略区域展示简单且负担得起的信息海报，上面有简单的信息提醒不要接受他们知道自己不会吃的食物。这导致浪费消耗指数平均降低了约 15%。同时还实施了一项鼓励有机和无机废物分离的平行行动，超过 70%的用户积极参与。该倡议通过提高机构食堂对日常食物浪费问题的认识，并提出减少此类浪费的“方法”，实现了减少餐盘浪费的目标。这项研究表明，通过让学生意识到食物浪费的问题，简单的策略就可以减少浪费。简单的策略可能有助于改善大学食堂的行为，提高可持续性，但这需要食堂工作人员的合作才能有效，他们需要接受扎实的教育。根据研究结果，向大学社会服务部门提出了一系列措施，以确保大学食堂食物浪费和可回收物的永久性减少。
