用于易腐水果的壳聚糖双胍/PVP抗菌涂层
Chitosan Biguanidine/PVP Antibacterial Coatings for Perishable Fruits.
作者信息
Jiao Xiangyu, Xie Jiaxuan, Hao Mingda, Li Yiping, Wang Changtao, Zhu Zhu, Wen Yongqiang
机构信息
Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Key Laboratory of Cosmetic, China National Light Industry, Beijing Technology and Business University, Beijing 100048, China.
出版信息
Polymers (Basel). 2022 Jul 1;14(13):2704. doi: 10.3390/polym14132704.
World hunger is on the rise, yet one-third of food is wasted. It is necessary to develop an effective food preservation method to reduce food waste. This article reports a composite film based on chitosan biguanidine hydrochloride(CBg) and poly (N-vinyl-2-pyrrolidone)(PVP) that can be used as a conformal coating for fresh produce. Due to the strong positive charge of CBg, the film has excellent antibacterial properties. Owing to the hydrogen bonds between CBg and PVP, the film has good flexibility and mechanical properties. In addition, the coating is washable, transparent, and can reduce the evaporation of water. The above characteristics mean the film has broad application prospects in the field of food preservation.
全球饥饿问题日益严重，但仍有三分之一的食物被浪费。开发一种有效的食品保鲜方法以减少食物浪费很有必要。本文报道了一种基于壳聚糖盐酸双胍（CBg）和聚（N-乙烯基-2-吡咯烷酮）（PVP）的复合膜，该复合膜可用作新鲜农产品的保形涂层。由于CBg带强正电荷，该膜具有优异的抗菌性能。由于CBg与PVP之间存在氢键，该膜具有良好的柔韧性和机械性能。此外，该涂层可清洗、透明，并且能减少水分蒸发。上述特性意味着该膜在食品保鲜领域具有广阔的应用前景。
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