Development of antioxidant chitosan film with banana peels extract and its application as coating in maintaining the storage quality of apple.
Development of antioxidant chitosan film with banana peels extract and its application as coating in maintaining the storage quality of apple.
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DOI：
10.1016/j.ijbiomac.2019.10.275
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发表时间：
2019-11
影响因子：
8.2
通讯作者：
Wanli Zhang;Xiangxin Li;Weibo Jiang
中科院分区：
文献类型：
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作者：
Wanli Zhang;Xiangxin Li;Weibo Jiang
在本研究中，开发了抗氧化剂壳聚糖（CS）-香蕉皮提取物（BPE）复合膜。 CS膜中添加了不同含量的BPE（4%、8%和12%），不仅作为抗氧化剂，而且作为交联剂。通过扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）、X射线衍射分析（XRD）和热重分析（TGA）对CS、CS-4% BPE、CS-8% BPE和CS-12% BPE薄膜进行了表征。对CS和CS-BPE薄膜所具有的物理机械性能进行了比较，其中CS-4％BPE复合薄膜表现出最优异的性能。 CS-BPE复合膜的含水量、水溶性和水蒸气透过率的下降表明亲水性降低。此外，CS-BPE复合膜在不同的食品模拟物中表现出优异的抗氧化活性。最后确定了CS-BPE涂膜处理的最佳浓度并将其应用于苹果果实，结果表明CS-BPE涂膜比CS涂膜更能提高苹果果实采后品质。这项研究证明了 CS-BPE 复合薄膜和涂层作为活性包装理想替代品的前景，并且被认为有利于香蕉皮副产品在相关应用中的增值。
In the present study, the antioxidant chitosan (CS)-banana peels extract (BPE) composite film was developed. The different content of BPE (4%, 8% and 12%) was added to the CS film not only as the antioxidant but also as the cross-linking. The CS, CS-4% BPE, CS-8% BPE and CS-12% BPE films were characterized by scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD) and thermogravimetric analysis (TGA). The physical and mechanical properties possessed by the CS and CS-BPE films were compared as well, and the CS-4 %BPE composite film exhibited the most excellent properties. The decline in moisture contents, water solubility and water vapor permeability of CS-BPE composite film indicated the reduced hydrophilicity. Moreover, the CS-BPE composite film exhibited excellent antioxidant activity in different food simulants. Finally, the optimal concentration of CS-BPE coating treatment was identified and applied to apple fruit, and the results showed that CS-BPE coating was more capable of improving the postharvest quality of apple fruit than CS coating. This study evidences the promising nature of CS-BPE composite film and coating as a desirable alternative for active packaging and it is believed as conducive to valorization of banana peel by-products for allied applications.