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一种基于点的活性涂层,用于保存新鲜切割的果:与丁烯和e-聚氨酸结合,以提高性能
Chengheng Li1, Junkun Pan1, Muhammad Nawaz1
1Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China.
Foods (Basel, Switzerland)
|January 10, 2026
概括
由pectin,e-polylysine和luteolin制成的新可食用涂层改善了水果质量,并减少了收获后的损失. 这种植物性涂层增强了屏障特性,并在储存期间保持切割果的新鲜度.
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
- 生物化学 生化学
背景情况:
- 收获后的水果损失显著影响食品的可用性和经济价值.
- 可食用涂层提供了一种可持续的解决方案,可以延长新鲜和新鲜切割的产品的保质期.
- 传统的基于pectin的涂料往往缺乏足够的抗微生物和屏障功能.
研究的目的:
- 通过结合pectin,e-polylysine和luteolin来开发一种新的三元活性食用涂层.
- 评估复合涂层增强的疏水性,抗氧化和抗微生物特性.
- 评估涂层在冷藏储存期间保持新鲜切割果质量的有效性.
主要方法:
- 一种三元复合膜的制造,该膜整合了pectin,e-polylysine和luteolin.
- 薄膜性质的表征,包括疏水性,屏障性能 (水蒸气,O2,CO2透性),抗氧化剂和抗菌活性.
- 在12天的储存时间内,涂层应用于新鲜切割的果,并评估质量参数 (棕色,微生物负载,硬度,化学成分).
- 使用富里埃变换红外光谱 (FTIR),X射线衍射 (XRD),扫描电子显微镜 (SEM) 和分子对接的结构分析.
主要成果:
- 与只有pectin的薄膜相比,三元涂层表现出明显改善的疏水性,抗氧化剂和抗菌活性.
- 观察到增强的屏障特性,降低了对水蒸气 (49.1%),氧气 (68.6%) 和二氧化碳 (26.5%) 的透性.
- 涂层新鲜切割的果显示抑制了色和微生物生长,而关键的质量属性 (硬度,,黄,TSS,TA) 维持了12天.
- 在三元矩阵内,协同的静电相互作用和键网络被确定为优越功能的来源.
结论:
- 开发的三元食用涂层在保存新鲜切割果的质量方面表现出很高的性能.
- 这种植物性涂层通过增强屏障特性和抑制腐烂,有效地减少收获后的损失.
- 这些发现为设计先进的食用涂层提供了实用策略,以提高食品质量和减少浪费.
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