Yang Zhaohui, Zhang Yalan, Zhao Yihui, Dong Hao, Peng Jian, He Qi
School of Public Health, Southern Medical University, Guangzhou 510515, China.
Research Center for Green Development of Agriculture, South China Agricultural University, Guangzhou 510642, China.
Foods. 2022 Mar 28;11(7):985. doi: 10.3390/foods11070985.
The aim of this work is to glazing a modified bio-polymer shell as substitute of peel to keep the postharvest quality of fresh-cut fruits. In this study, chitosan as backbone of the shell was modified by addition of the functional extracts obtained from in which 12 kinds of main identified bio-active components consisted of over 55% of the total extracts. The introduction of the extracts improved physic and mechanical properties of the shell, and endowed it with significant antimicrobial and antioxidant activity. Accordingly, the modified chitosan was used as the substitute of peel to preserve fresh-cut apples. Results exhibited that such treatments obviously delayed the decline process of overall postharvest quality of the preserved apple samples throughout all the storage period, represented by the variations in physical, chemical, and microbial properties of the apple samples were significantly inhibited. The overall observations revealed promising potential of the bio-polymer shell in food application.
这项工作的目的是给一种改性生物聚合物外壳进行包衣，以替代果皮来保持鲜切水果的采后品质。在本研究中，壳聚糖作为外壳的骨架，通过添加从[具体来源未明确]获得的功能提取物进行改性，其中12种主要鉴定出的生物活性成分占总提取物的55%以上。提取物的引入改善了外壳的物理和机械性能，并赋予其显著的抗菌和抗氧化活性。因此，改性壳聚糖被用作果皮的替代品来保存鲜切苹果。结果表明，这些处理在整个储存期内明显延缓了保存苹果样品采后整体品质的下降过程，以苹果样品物理、化学和微生物性质的变化显著受到抑制为代表。总体观察结果显示了这种生物聚合物外壳在食品应用中的潜在前景。
