Etim Emma, Choedron Karma Tashi, Ajai Olawale, Duke Otu, Jijingi Hemen Emmanuel
School of Geography, University of Nottingham, Nottingham, UK.
School of Politics and International Relations, Faculty of Arts and Social Sciences, University of Nottingham Malaysia, Semenyih, Selangor, Malaysia.
Waste Manag Res. 2024 Oct 9:734242X241285423. doi: 10.1177/0734242X241285423.
Globally, household food waste alone accounts for about $700 billion in environmental costs owing to the resources expended in producing discarded or uneaten food, along with social costs reaching approximately $900 billion. Reducing this waste by 25% could potentially feed 821 million chronically undernourished individuals. This systematic review examines household food waste behaviour using the Theory of Planned Behaviour (TPB). Comprehensive searches were conducted in PubMed and EMBASE using Elsevier supplemented by additional articles from the reference lists. The procedure followed the PRISMA flowchart. A descriptive analysis was conducted to summarize the characteristics of the 42 included studies from 17 countries. Significantly, 95% of these articles were published between 1 January 2010 and 19 April 2024, in Scimago Q1 ranked journals. The findings demonstrate an intersection of TPB components in explaining household food waste behaviour. This study suggests that a holistic strategy targeting attitudes, subjective norms and perceived behavioural control is essential for effectively reducing household food waste. Additionally, tailored interventions that consider demographic and socioeconomic factors are necessary to address the diverse needs of different populations. The study concludes that public education targeting mindful consumption, effective policies and community initiatives can significantly reduce food waste.
在全球范围内，仅家庭食物浪费一项，由于生产被丢弃或未食用食物所耗费的资源，就造成了约7000亿美元的环境成本，同时社会成本达到约9000亿美元。将这种浪费减少25%有可能养活8.21亿长期营养不良的人。本系统综述运用计划行为理论（TPB）研究家庭食物浪费行为。在PubMed和EMBASE中使用爱思唯尔进行全面检索，并辅以参考文献列表中的其他文章。该过程遵循PRISMA流程图。进行描述性分析以总结来自17个国家的42项纳入研究的特征。值得注意的是，这些文章中有95%发表于2010年1月1日至2024年4月19日之间，发表在Scimago Q1排名的期刊上。研究结果表明，TPB各组成部分在解释家庭食物浪费行为方面存在交叉。本研究表明，针对态度、主观规范和感知行为控制的整体策略对于有效减少家庭食物浪费至关重要。此外，考虑人口统计学和社会经济因素的量身定制干预措施对于满足不同人群的多样化需求是必要的。研究得出结论，针对有意识消费的公共教育、有效的政策和社区倡议可以显著减少食物浪费。
