工程抗菌血聚合聚乙烯甘醇-ZnO纳米复合材料涂层,以延长猪肉香肠的保质期
Maryam Zabihzadeh Khajavi1, Anton Nikiforov2, Rino Morent2
1Ghent University, Department of Food Technology, Safety and Health, Research Unit Food Microbiology and Food Preservation (FMFP), Belgium; Ghent University, Department of Applied Physics, Research Unit Plasma Technology (RUPT), Belgium.
Food research international (Ottawa, Ont.)
|January 24, 2025
概括
使用氧化纳米颗粒的环保等离子涂层为食品包装提供强大的抗菌保护. 这些基于聚乙烯甘醇的新型薄膜有效抑制细菌生长,并确保食品安全.
科学领域:
- 材料科学 材料科学 材料科学
- 食品科学 食品科学 食品科学
- 纳米技术纳米技术
背景情况:
- 对于可持续和安全的食品包装解决方案的需求日益增长.
- 等离子聚合是一种应用功能性涂层的多功能方法.
- 需要有效的抗菌剂来延长食品的保质期.
研究的目的:
- 开发和评估食品包装的环保抗菌涂层.
- 研究嵌入氧化纳米粒子 (ZnO NPs) 的聚乙烯糖醇 (PEG) 类涂层的有效性.
- 评估这些纳米复合材料涂料在实际食品应用中的安全性和性能.
主要方法:
- 大气压气溶辅助等离子沉积,在聚乙烯 (PE) 基板上制造PEG-ZnO纳米复合材料涂层.
- 针对大肠杆菌 (大肠杆菌) 和金黄色葡萄球菌 (金黄色葡萄球菌) 的抗菌疗效测试.
- 在真空包装的猪肉香肠中对细菌抑制的评估,这些香肠被注射了Listeria monocytogenes或LAB菌株.
- 在食品仿真剂中释放离子的评估.
主要成果:
- 均且合规的PEG-ZnO纳米复合材料涂层成功沉积.
- 有效抑制大肠杆菌和黄金色杆菌的生长,特别是较小的ZnONP (35-45nm).
- 在冷藏储存期间,在包装的猪肉香肠中显著减少了细菌生长 (L. monocytogenes,LAB).
- 离子释放仍低于监管安全限值.
结论:
- 塑聚合PEG-ZnO纳米复合材料涂层是食品包装的有效可降解的抗菌膜.
- 这些涂料表现出强大的抗菌活性,并提高了食品安全.
- 开发的技术显示了可持续食品包装应用的重大前景.
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