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首页> 外文期刊>International Journal of Biological Macromolecules: Structure, Function and Interactions >Antimicrobial biodegradable chitosan-based composite Nano-layers for food packaging
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Antimicrobial biodegradable chitosan-based composite Nano-layers for food packaging

机译：用于食品包装的抗微生物生物降解的壳聚糖基复合纳米层

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摘要

Stable silver nanoparticles (AgNPs) of size 80 +/- 11 nm produced by chitosan (CH) mediated green synthesis were blended with polyvinyl alcohol (PVA) to form electrospun fibrous composite nano-layers (FCNLs). The chitosan acted as the stabilising as well as an antimicrobial agent in combination with the AgNPs which were characterised using UV-visible spectrophotometry, dynamic light scattering (DLS) and scanning electron microscopy (SEM). The crystallinity and chemical nature of the electrospun composite was characterised by using X-ray diffraction (XRD) and FTIR spectroscopy, respectively, and its hydrophobicity was characterised by measuring the water contact angle. The electrospun composite showed effective antimicrobial activity against Listeria monocytogenes (gram +ve) and Escherichia coli (gram -ve) bacterial species. The electrospun composite, when tested as packaging material for meat, showed bio-activity and extended the meat shelf-life by one week. The electrospun nanocomposite is able to inhibit microbial degradation of packaged food and extend its keeping quality in an eco-friendly manner. (C) 2020 Elsevier B.V. All rights reserved.
机译：用壳聚糖（CH）介导的绿色合成产生的尺寸80 +/- 11nm的稳定银纳米颗粒（AgNP）与聚乙烯醇（PVA）混合，形成电纺纤维复合纳米层（FCNL）。壳聚糖用作稳定性以及抗微生物剂，与AgNP结合使用UV可见分光光度法，动态光散射（DLS）和扫描电子显微镜（SEM）。通过使用X射线衍射（XRD）和FTIR光谱，表征Electromat复合物的结晶度和化学性质，其疏水性通过测量水接触角来表征。电纺复合物显示出对李斯特菌单核细胞增生（克+ ve）和大肠杆菌（克的细菌种类的有效抗微生物活性。当肉类包装材料测试时，电纺复合材料显示生物活性并将肉质保质期延伸一周。电纺纳米复合材料能够抑制包装食品的微生物降解，并以生态友好的方式延长其保持质量。 （c）2020 Elsevier B.v.保留所有权利。

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