DBD 冷等离子工艺对加入 AgNPs 的生物降解包装膜(基于明胶-海藻酸钠)的物理化学、机械和微生物特性的影响,以延长鳟鱼在冰箱中的保质期

IF 5.3 2区 农林科学 Q1 FOOD SCIENCE & TECHNOLOGY
Sima Tahmouzi, Jalal Sadeghizadeh-Yazdi, Fateme Akrami Mohajeri, Hossein Fallahzadeh, Maryam Mahmoudzadeh, Sirous Khorram
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引用次数: 0

摘要

本研究旨在利用溶剂浇铸法开发一种基于明胶(G)和海藻酸钠(SA)生物聚合物的新型可生物降解包装膜,其中含有银纳米粒子(AgNPs),并评估其物理化学、机械和抗菌特性,以及在食品包装消费中的功效。薄膜性能受 AgNP 浓度水平的影响较小。随着 AgNPs 浓度的增加,GSA-AgNPs 薄膜的水蒸气透过率(WVP)、水溶性、透明度和拉伸强度(TS)显著降低,平均降幅分别为 42%、59%、56% 和 76%(p <0.05)。此外,还使用介质阻挡放电(DBD)冷等离子体技术研究了 Hurdle 技术对 GSA(对照)和 GSA-AgNPs (最佳)薄膜的影响。扫描电子显微镜(SEM)显示,经过 DBD 冷等离子处理的 GSA-AgNPs 薄膜具有紧凑的表面结构、出色的结构完整性、良好的阻隔性和潜在的抗菌活性(大肠杆菌 O157:H7 和鼠伤寒沙门氏菌)。与其他样品相比,经过冷等离子处理的最佳薄膜包装样品中硫代巴比妥酸(0.54 毫克 MDA/千克样品)、总挥发性氮(19.04 毫克/100 克)和中嗜酸细菌总数(5.8 对数 CFU/克)含量较低。鱼片测试表明,含有 20 ppm(0.002%)AgNPs 的冷等离子处理薄膜被认为是最有效的抗菌食品包装。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The Effect of the DBD Cold Plasma Process on the Physicochemical, Mechanical, and Microbial Properties of the Biodegradable Packaging Film (Based on Gelatin-Sodium Alginate) Incorporated with AgNPs to Extend the Shelf Life of Trout Fish in the Refrigerator

The Effect of the DBD Cold Plasma Process on the Physicochemical, Mechanical, and Microbial Properties of the Biodegradable Packaging Film (Based on Gelatin-Sodium Alginate) Incorporated with AgNPs to Extend the Shelf Life of Trout Fish in the Refrigerator

This investigation aimed to develop a novel biodegradable packaging film based on gelatin (G) and sodium alginate (SA) biopolymers containing silver nanoparticles (AgNPs) using the solvent casting method, assess the physicochemical, mechanical, and antimicrobial features, and evaluate the efficacy of the films in food packaging consumption. Film properties were slightly affected by AgNP concentration levels. As the concentration of AgNPs was increased, water vapor permeability (WVP), water solubility, transparency, and tensile strength (TS) of GSA-AgNPs films were significantly reduced by an average of 42%, 59%, 56%, and 76%, respectively (p < 0.05). Additionally, the impacts of Hurdle technology on GSA (control) and GSA-AgNPs (optimal) films were investigated using dielectric barrier discharge (DBD) cold plasma technology. Scanning electron microscopy (SEM) revealed that cold plasma-treated GSA-AgNPs films had compact surface structures, excellent structural integrity, good barrier qualities, and potential antibacterial activity (Escherichia coli O157:H7 and Salmonella Typhimurium) as a result of DBD cold plasma treatment. The packaged samples with cold plasma-treated optimal films were lower in thiobarbituric acid (0.54 mg MDA/kg sample), total volatile nitrogen (19.04 mg/100 g), and total mesophilic bacteria count (5.8 log CFU/g) compared to other samples. Tests on fish fillets have indicated that cold plasma-treated films containing 20 ppm (0.002%) AgNPs are considered the most effective antimicrobial food packaging.

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来源期刊
Food and Bioprocess Technology
Food and Bioprocess Technology 农林科学-食品科技
CiteScore
9.50
自引率
19.60%
发文量
200
审稿时长
2.8 months
期刊介绍: Food and Bioprocess Technology provides an effective and timely platform for cutting-edge high quality original papers in the engineering and science of all types of food processing technologies, from the original food supply source to the consumer’s dinner table. It aims to be a leading international journal for the multidisciplinary agri-food research community. The journal focuses especially on experimental or theoretical research findings that have the potential for helping the agri-food industry to improve process efficiency, enhance product quality and, extend shelf-life of fresh and processed agri-food products. The editors present critical reviews on new perspectives to established processes, innovative and emerging technologies, and trends and future research in food and bioproducts processing. The journal also publishes short communications for rapidly disseminating preliminary results, letters to the Editor on recent developments and controversy, and book reviews.
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