基于凝的多功能复合薄膜与二甲基二氧化碳甲基纤维素和咖啡叶提取物相结合,用于活性食品包装
Fangfei Sun1, Peng Shan1, Bingzhen Liu1
1Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
International journal of biological macromolecules
|February 21, 2024
概括
这项研究开发了先进的食品包装膜,使用凝,二甲基二氧化碳甲基纤维素和咖啡叶提取物. 由此产生的薄膜提供了增强的机械强度,屏障特性和抗氧化活性,改善了食品的保存.
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
- 聚合物化学 聚合物化学
背景情况:
- 基于凝的薄膜对食品包装有希望,但往往缺乏足够的机械和屏障性能.
- 结合活性化合物可以增强功能,但需要仔细的材料选择和加工.
- 甲基二氧化碳甲基纤维素 (DCMC) 和咖啡叶提取物 (CLE) 具有创造多功能复合膜的潜力.
研究的目的:
- 通过将DCMC和不同度的CLE纳入凝 (GEL) 基质中,开发新的多功能食品包装膜.
- 研究DCMC和CLE对复合膜的微观结构,物理化学和功能性质的影响.
- 评估开发的薄膜在食品包装应用中的性能,特别是对于核桃油和新鲜核桃核的应用.
主要方法:
- 复合薄膜使用凝 (GEL) 作为基质,用二甲基碳酸甲纤维素 (DCMC) 作为交联剂和咖啡叶提取物 (CLE) 作为活性填充剂在不同度 (1%,3%,5%,7%) 准备.
- 鉴定包括微形态学,微结构分析和物理化学性质 (机械,屏障,热稳定性,紫外线阻断,耐水性) 的评估.
- 评估了功能性质,如抗氧化和抗菌活性,以及对脂质氧化和收获后保存的包装应用测试.
主要成果:
- 加入DCMC和CLE显著改善了凝膜的机械性能,屏障特性 (水蒸气和氧气) 和热稳定性.
- 与纯GEL薄膜相比,GEL/DCMC/5%CLE复合膜表现出优异的紫外线阻断能力,同时保持透明度,优异的机械强度,耐水性和屏障性能.
- 优化的薄膜表现出显著的抗氧化活性和适度的抗菌作用对大肠杆菌和黄金杆菌,有效地延迟了核桃油中的脂质氧化,并保存了新鲜的核桃核.
结论:
- 用DCMC强化,用CLE功能化的基于凝的复合膜显示出作为多功能食品包装材料的巨大潜力.
- GEL/DCMC/5%CLE配方提供了一个平衡的配置,增强了物理,化学和功能性质,以有效保存食品.
- 这些发现表明,使用天然提取物和改性生物聚合物开发可持续和活性食品包装解决方案的可行途径.
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