用于抗微生物食品包装的氨酸丰富的二甲基粉-PVA薄膜的开发和表征
Qincong Luo1, Jinyu Ouyang1, Luqi Zhan1
1Guangxi Key Laboratory of Electrochemical and Magneto-chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China.
International journal of biological macromolecules
|September 30, 2025
概括
这项研究开发了素丰富的聚乙醇/二甲基粉膜,用于食品包装. 这些抗菌膜增强机械性能,延长水果和蔬菜的保质期.
科学领域:
- 食品科学与技术 食品科学与技术
- 材料科学 材料科学 材料科学
- 生物技术是生物技术.
背景情况:
- 开发有效的抗微生物和抗氧化剂食品包装对于延长保质期和减少食物浪费至关重要.
- 聚乙醇 (PVA) 和二甲基粉 (DAS) 是可生物降解的聚合物,有可能用于食品包装应用.
- 包括像素这样的活性化合物可以增强聚合物薄膜的功能性质.
研究的目的:
- 调查素 (Cap) 丰富的聚乙烯醇/二甲基粉 (DAS/PVA) 薄膜作为活性食品包装的潜力.
- 评估素对DAS/PVA薄膜的微观结构,机械,紫外线屏蔽,抗菌和防水性能的影响.
- 评估开发的DAS/PVA/Cap薄膜在保存新鲜绿色葡萄中的有效性.
主要方法:
- 制造具有不同度素的DAS/PVA薄膜.
- 综合性表征包括微结构分析,紫外线屏蔽,机械测试 (拉伸强度,破裂时的延伸) 和水障碍物质性评估.
- 在体外抗菌活性测定对黄金葡萄球菌和大肠杆菌的抗菌活性.
- 用于包装新鲜绿葡萄的应用测试,以评估保质期延长和微生物抑制.
主要成果:
- 素在DAS/PVA矩阵中的均分布抑制了泡形成,并显著增强了拉伸强度 (11.9至17.27MPa) 和破裂时的延伸 (269.7至322.7MPa).
- 富含素的薄膜表现出极好的抗菌活性,抑制了91.4%的金黄色细菌和73.4%的大肠杆菌.
- DAS/PVA/Cap薄膜显示出有希望的紫外线屏蔽能力和改善的防水性能.
- 用DAS/PVA/Cap膜包装新鲜的绿色葡萄有效防止了微生物感染并延长了保质期.
结论:
- 富含素的DAS/PVA薄膜为活性食品包装提供了一个有前途的解决方案,增强了物理和抗菌性质.
- 开发的片显示出在水果和蔬菜的包装中应用的巨大潜力,有助于减少食品腐烂.
- 进一步的研究可以探索针对特定食物类型的优化和大规模生产的可行性.
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