Abstract Edible self-healing coatings based on sodium alginate (SA) and l- menthol-beta-cyclodextrin-graft-chitosan were developed to improve the post-harvest quality and prolong the shelf life of fruits and vegetables. These coatings, which were developed based on a layer-by-layer self-assembly technique, were characterized. Their mechanical properties and morphological studies indicated that the addition of l-menthol resulted in a transparent, smooth, and dense coating with better mechanical features and self-healing properties. The self-healing efficiency of coatings containing l-menthol was 59.49%, which was approximately 13.18 % higher than the control ones. In addition, the coatings realized a controlled liberation property owing to the liberation of l-menthol incorporated in β-cyclodextrin. The coatings effectively retained fruit firmness and reduced the weight loss of coated apples throughout a 30 d storage. These results demonstrate that the coatings can be used as a large-scale commercial wrapping for prolonging the shelf life of fruits and vegetables.

中文翻译：

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基于客-主相互作用制备含l-薄荷醇的可食用自修复涂层

摘要 开发了基于海藻酸钠 (SA) 和 l-薄荷醇-β-环糊精-接枝-壳聚糖的可食用自修复涂层，以改善水果和蔬菜的采后质量并延长其保质期。对这些基于逐层自组装技术开发的涂层进行了表征。它们的机械性能和形态研究表明，添加 l-薄荷醇可形成透明、光滑、致密的涂层，具有更好的机械特性和自愈性能。含有l-薄荷醇的涂层的自修复效率为59.49%，比对照高约13.18%。此外，由于结合在 β-环糊精中的 l-薄荷醇的释放，涂层实现了受控的释放特性。在 30 天的储存期间，涂层有效地保持了果实的硬度并减少了涂层苹果的重量损失。这些结果表明，该涂层可用作大规模商业包装，以延长水果和蔬菜的保质期。