Effect of biosynthesized ZnO and Ag/ZnO nanoparticles on bacterial cellulose/polyvinyl alcohol films for strawberry preservation

IF 4.8 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD Cellulose Pub Date : 2024-12-13 DOI:10.1007/s10570-024-06316-7

Thuy Thi Thanh Nguyen, Thuong Hoai Pham, Thanh Thi Lan Bien, Thuan Van Tran

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Abstract

Although bacterial cellulose-polyvinyl alcohol (BC-PVA) films exhibit a range of advantages such as enhanced elasticity, mechanical strength, and thermal stability, they still face several challenges, particularly in antibacterial performance. This drawback can hinder BC-PVA films to access to food packaging and preservation fields. The present study aimed to improve antibacterial performance of an active packaging film composed of BC-PVA films by incorporating nanoparticles (NPs) such as ZnO and Ag/ZnO biosynthesized using Eclipta prostrata (EP) plant extract. The results revealed the significant effect of ZnONPs and Ag/ZnONPs on the microstructure, water solubility, mechanical, water vapor permeability, oxygen permeability and antibacterial activity of BC-PVA composite films. The BC-PVA-Ag/ZnONP films possessed superior mechanical strength, reduced water vapor permeability and oxygen permeability compared to BC-PVA films. These composite films also displayed enhanced antimicrobial activity against both Gram-( +) and Gram-(−) bacteria. For packaging fresh strawberries, the BC-PVA-Ag/ZnONP films helped to extend shelf life, demonstrating their potential for various applications in active packaging field.

Graphical Abstract

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生物合成ZnO及Ag/ZnO纳米颗粒对草莓保鲜用细菌纤维素/聚乙烯醇膜的影响

尽管细菌纤维素-聚乙烯醇（BC-PVA）薄膜表现出一系列优点，如增强弹性、机械强度和热稳定性，但它们仍然面临一些挑战，特别是在抗菌性能方面。这个缺点会阻碍BC-PVA薄膜进入食品包装和保鲜领域。本研究旨在通过添加以黄花草（Eclipta prostrata， EP）植物提取物为原料合成的纳米颗粒（ZnO）和Ag/ZnO，来提高BC-PVA活性薄膜的抗菌性能。结果表明，ZnONPs和Ag/ZnONPs对BC-PVA复合膜的微观结构、水溶性、力学性能、水蒸气渗透性、氧渗透性和抗菌性能均有显著影响。与BC-PVA膜相比，BC-PVA- ag /ZnONP膜具有优异的机械强度，降低了水蒸气渗透性和氧气渗透性。这些复合膜对革兰氏-(+)和革兰氏-(−)细菌也显示出增强的抗菌活性。对于新鲜草莓的包装，BC-PVA-Ag/ZnONP薄膜有助于延长保质期，展示了其在活性包装领域的各种应用潜力。图形抽象

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.