Department of Food and Nutrition, BioNanocomposite Research Center, Kyung Hee University, Dongdaemun-gu, Seoul, Republic of Korea.
Crit Rev Food Sci Nutr. 2021;61(14):2297-2325. doi: 10.1080/10408398.2020.1776211. Epub 2020 Jun 16.
Recently, interest in smart packaging, which can show the color change of the packaging film according to the state of the food and evaluate the quality or freshness of the packaged food in real-time, is increasing. As a color indicator, a natural colorant, anthocyanin, drew a lot of attention due to their various colors as well as useful functions properties such as antioxidant activity and anti-carcinogenic and anti-inflammatory effects, prevention of cardiovascular disease, obesity, and diabetes. In particular, the pH-responsive color-changing function of anthocyanins is useful for making color indicator smart packaging films. This review addressed the latest information on the use of natural pigment anthocyanins for intelligent and active food packaging applications. Recent studies on eco-friendly biodegradable polymer-based color indicator films incorporated with anthocyanins have been addressed. Also, studies on the use of smart packaging films to monitor the freshness of foods such as milk, meat, and fish were reviewed. This review highlights the potential and challenges for the use of anthocyanins as pH-responsive color-changing films for intelligent food packaging applications, which may be beneficial for further development of smart color indicator films for practical use.
近年来，人们对智能包装越来越感兴趣，这种包装可以根据食品的状态改变包装膜的颜色，并实时评估包装食品的质量或新鲜度。作为一种颜色指示剂，天然着色剂花青素因其各种颜色以及有用的功能特性而受到关注，如抗氧化活性、抗癌和抗炎作用、预防心血管疾病、肥胖和糖尿病。特别是，花青素的 pH 响应变色功能对于制造颜色指示剂智能包装膜非常有用。本综述介绍了天然色素花青素在智能和活性食品包装应用中的最新信息。综述了最近关于将天然色素花青素与环保可生物降解聚合物基颜色指示剂薄膜结合使用的研究。还回顾了使用智能包装膜监测牛奶、肉类和鱼类等食品新鲜度的研究。本综述强调了花青素作为 pH 响应变色膜在智能食品包装应用中的潜力和挑战，这可能有助于进一步开发智能颜色指示剂薄膜以实际应用。
