Innovative chitosan-silver nanoparticles: Green synthesis, antimicrobial properties, and migration assessment for food packaging

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2024-12-04 DOI:10.1016/j.foodchem.2024.142363

Ayse Demirbas, Baris Karsli

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Abstract

This study investigates the green synthesis of chitosan-based silver nanoparticles (Ag NPs) and their application as antimicrobial coatings for food preservation. The effects of three coatings were evaluated on refrigerated tomatoes over 22 days: distilled water (control), 1 % chitosan (CH), and chitosan-based Ag NPs (Ag/CH). The synthesized Ag/CH was characterized by FT-IR, UV–vis spectroscopy, SEM, TEM, DLS, and XRD, confirming successful synthesis and a crystalline face-centered cubic structure. Antimicrobial activity, evaluated using the disk diffusion method, showed that Ag/CH coatings demonstrated superior antibacterial properties, with inhibition zones ranging from 9.19 to 11.07 mm. The Ag/CH coating effectively maintained tomato quality, with minimal changes in pH, color, and microbial counts. Although silver migration occurred, it remained within safety limits. This study addresses a gap in the literature by investigating the effects of chitosan-based silver nanoparticles on tomato quality and metal migration, demonstrating their potential as a sustainable solution for food preservation.

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创新壳聚糖-银纳米颗粒：绿色合成、抗菌性能和食品包装的迁移评估

研究了壳聚糖基纳米银的绿色合成及其在食品防腐涂料中的应用。以蒸馏水（对照）、1 %壳聚糖（CH）和壳聚糖基银NPs （Ag/CH）三种涂层对冷藏番茄22 天的影响进行了评价。通过FT-IR、紫外-可见光谱、SEM、TEM、DLS、XRD等手段对合成的Ag/CH进行了表征，证实了合成成功，具有晶面心立方结构。采用圆盘扩散法对Ag/CH涂层的抑菌活性进行了评价，其抑菌区范围为9.19 ~ 11.07 mm。Ag/CH包衣有效地保持了番茄的品质，pH值、颜色和微生物数量的变化很小。虽然银迁移发生了，但仍在安全范围内。本研究通过研究壳聚糖基纳米银对番茄品质和金属迁移的影响，填补了文献中的空白，展示了它们作为食品保鲜可持续解决方案的潜力。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.