期刊
RESOURCES CONSERVATION AND RECYCLING
卷 149, 期 -, 页码 322-331出版社
ELSEVIER
DOI: 10.1016/j.resconrec.2019.05.030
关键词
Nano-packaging; Nanomaterial; Food waste; Food shelf life; Consumer behavior; Life cycle assessment
资金
- Center for the Environment (C4E), Purdue University
- USDA National Institute of Food and Agriculture, Hatch project [1014964]
Approximately 30 to 50% of food produced is wasted in industrialized countries, which has caused severe impacts both economically and environmentally. Recently, nano-packaging has been proved to be a promising technology to significantly prolong the shelf life of many food products, and thus a potential solution for source reduction of food waste. However, the production of nanomaterials requires extra input of resources and generates additional emissions and wastes. This study conducted a life cycle assessment to evaluate the net carbon footprint of nano-packaging from a systems perspective, considering its entire life cycle and ultimate application for food preservation. Based on the defined functional unit (Le., 1 kg of food product and the required amount of nano-packaging materials), the global warming potential (GWP) associated with the nano-packaging system was highly affected by the concentration of incorporated nanomaterials and the type of packaged food. Furthermore, the packaging-food ratio played an important role in the relative contributions of nanomaterial, polymer, and food to the GWP of a nano-packaging system. A consumer behavior study was also performed to more accurately correlate food shelf life extension with food waste reduction. The results indicated that even with less than 3 days of shelf life extension, there is a potential to gain a net beneficial effect of the use of nano-packaging on carbon footprint mitigation. This study developed a novel conceptual framework enabling a comparative assessment of direct life cycle impacts of nano-packaging in parallel to indirect benefits related to its use stage. The results are expected provide food manufacturers with the groundwork to make more informed decisions on nano-packaging applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据