Background

Natural materials-based edible coatings provide a promising approach for enhancing quality and prolonging storability of food products. Since one single material often cannot answer numerous applicative requirements, there has been recent development in composite edible coatings. The Layer by Layer (LbL) approach is based on the alternate deposition of different biopolymers and allows for a more effective control over the physicochemical properties and activity of edible coatings.

Scope and approach

In this review, the progress in the development of active edible coatings, by utilizing the LbL approach, has been summarized. The discussion includes raw materials that are used to form LbL matrices, physical and mechanical properties of the prepared edible coatings, their bioactivity and applications on various food products.

Key findings and conclusions

The LbL method enables to regulate material properties and allows the formation of advanced edible coatings. Currently, LbL edible coatings are mostly applied on fresh fruit and vegetables, although their application on processed food products is also possible. LbL edible coatings may provide food products with prolonged storability, enhanced physiological quality, improved appearance, and antimicrobial protection. The LbL method can also be combined with other approaches and utilized for the delivery of active agents.

In the Food Technology and edible coatings research fields, the utilization of the LbL approach has only recently begun to be established. Further research is anticipated to lead to a new generation of rationally designed edible coatings with precisely adjusted properties for the effective enhancement of food products quality and storability.

中文翻译：

---

通过使用逐层食用涂料来提高食品的质量和耐贮藏性

背景

基于天然材料的可食用涂料为提高食品质量和延长食品的可存储性提供了一种有前途的方法。由于一种单一材料通常不能满足众多应用需求，因此复合食用涂料已得到了新的发展。逐层（LbL）方法基于不同生物聚合物的交替沉积，可以更有效地控制可食用涂料的物理化学性质和活性。

范围和方法

在这篇综述中，通过利用LbL方法总结了活性食用涂料的开发进展。讨论内容包括用于形成LbL基质的原料，制备的可食用涂料的物理和机械性能，它们的生物活性以及在各种食品上的应用。

主要发现和结论

LbL方法能够调节材料性能并允许形成高级食用涂料。目前，LbL可食用涂料主要应用于新鲜水果和蔬菜，尽管也可以应用于加工食品。LbL可食用涂料可以为食品提供延长的储存性，增强的生理品质，改善的外观和抗菌保护。LbL方法也可以与其他方法结合，并用于递送活性剂。

在食品技术和食用涂料研究领域，LbL方法的利用只是最近才开始建立。预计将进行进一步的研究，以产生具有合理调整特性的，经过合理设计的新一代食用涂料，以有效提高食品的质量和耐贮藏性。