China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 201306, P.R. China.
School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 201306, P.R. China.
J Agric Food Chem. 2022 Jul 27;70(29):8855-8870. doi: 10.1021/acs.jafc.2c02655. Epub 2022 Jul 14.
Traditional incineration and landfill of food processing waste (FPW) have polluted the environment and underutilized valuable bioactive compounds, including polyphenols in food waste. As one of the most widely occurring compounds in the FPW, polyphenols possess high utilization value in many fields such as human health, energy, and environmental protection. Extracting polyphenols directly from FPW can maximize the value of polyphenols and avoid waste of resources. However, traditional polyphenol extraction methods mostly use the Soxhlet extraction, infiltration, and impregnation method, consuming a large amount of organic solvent and suffering from long extraction time and low extraction efficiency. Emerging green extraction methods such as supercritical fluid extraction, ultrasonic-assisted extraction, microwave-assisted extraction, and other methods can shorten the extraction time and improve the solvent extraction efficacy, resulting in the green and safe recovery of polyphenols from FPW. In this paper, the traditional treatment methods of FPW waste and the application of polyphenols in FPW are briefly reviewed, and the traditional extraction methods and emerging green extraction methods of polyphenols in FPW are compared to obtain insight into the start-of-the-art extraction approaches.
传统的食品加工废物（FPW）焚烧和填埋方式已经对环境造成了污染，同时也浪费了许多有价值的生物活性化合物，包括食品废物中的多酚。多酚作为 FPW 中最广泛存在的化合物之一，在人类健康、能源和环境保护等许多领域具有很高的利用价值。直接从 FPW 中提取多酚可以最大限度地发挥多酚的价值，避免资源浪费。然而，传统的多酚提取方法大多采用索氏提取、浸渍和渗透法，消耗大量有机溶剂，且提取时间长、提取效率低。超临界流体萃取、超声波辅助提取、微波辅助提取等新兴绿色提取方法可以缩短提取时间，提高溶剂提取效率，从而实现 FPW 中多酚的绿色、安全回收。本文简要综述了 FPW 废物的传统处理方法以及多酚在 FPW 中的应用，并对 FPW 中多酚的传统提取方法和新兴绿色提取方法进行了比较，以期为多酚的提取方法提供参考。
