Sustained release composite antimicrobial film containing oregano essential oil microcapsule for postharvest strawberry preservation

IF 8.5 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY Food Packaging and Shelf Life Pub Date : 2024-11-01 DOI:10.1016/j.fpsl.2024.101387

Liying Yang, Xueyi Liu, Douxin Xiao, Alideertu Dong

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Abstract

Essential oil has potential in preventing fruit rancidity and decay during storage, its limited water solubility and vulnerability to light hinder widespread application. The present study used the complex coacervation method to prepare gelatin-gum arabic (GA) microcapsules loaded with oregano essential oil, which were then incorporated into a polyvinyl alcohol substrate to construct an antimicrobial film composite (OEO@GA-PVA film). The composite film exhibited an enhanced water vapor barrier property compared to the PVA film, resulting in a reduction of the water vapor permeability (WVP) from 6.49 g·cm/(cm²·s·Pa) to 3.86 g·cm/(cm²·s·Pa). The addition of microcapsules improved the film's ability to block both UV and visible light. The OEO@GA-PVA film exhibited a sustained bacteriostatic effect and effectively prolonged the shelf life of strawberries for up to 7 days. The findings of this study can be a valuable reference for using essential oil in strawberry preservation.

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用于草莓采后保鲜的含牛至精油微胶囊的缓释复合抗菌膜

精油具有防止水果在贮藏过程中酸败和腐烂的潜力，但其有限的水溶性和易受光线影响的特性阻碍了它的广泛应用。本研究采用复合共凝固法制备了载入牛至精油的明胶-阿拉伯胶（GA）微胶囊，然后将其与聚乙烯醇基底结合，构建了一种抗菌复合膜（OEO@GA-PVA 膜）。与 PVA 薄膜相比，该复合薄膜的水蒸气阻隔性能得到了增强，水蒸气渗透率（WVP）从 6.49 g-cm/(cm2-s-Pa) 降至 3.86 g-cm/(cm2-s-Pa)。微胶囊的加入提高了薄膜阻挡紫外线和可见光的能力。OEO@GA-PVA 薄膜具有持续的抑菌作用，可有效延长草莓的保质期长达 7 天。这项研究的结果可为在草莓保鲜中使用精油提供有价值的参考。

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来源期刊

Food Packaging and Shelf Life Agricultural and Biological Sciences-Food Science

CiteScore

14.00

自引率

8.80%

发文量

214

审稿时长

70 days

期刊介绍： Food packaging is crucial for preserving food integrity throughout the distribution chain. It safeguards against contamination by physical, chemical, and biological agents, ensuring the safety and quality of processed foods. The evolution of novel food packaging, including modified atmosphere and active packaging, has extended shelf life, enhancing convenience for consumers. Shelf life, the duration a perishable item remains suitable for sale, use, or consumption, is intricately linked with food packaging, emphasizing its role in maintaining product quality and safety.