作为主动包装的LDPE-天然复合膜:氧气清理器的范式转变
Subhash Pawde1, Sachin R Chaudhari1, Pichan Prabhasankar1
1AcSIR-Academy of Scientific & Innovative Research, Ghaziabad 201002, Uttar Pradesh, India.
ACS applied materials & interfaces
|August 4, 2023
概括
这项研究开发了一种使用低密度聚乙烯和天然的活性包装薄膜. 这种新的吸氧膜通过防止氧气损伤,有效地延长面包和食品的保质期.
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
- 聚合物科学 聚合物科学
背景情况:
- 活性包装对于保持食品质量和新鲜度至关重要.
- 暴露于氧气会降解食品,降低保质期和质量.
- 开发有效的吸氧材料对于食品工业至关重要.
研究的目的:
- 开发和描述一种使用低密度聚乙烯 (LDPE) 和天然 (NR) 的新型吸氧膜.
- 为了优化氧吸收膜的激活,使用紫外线处理.
- 评估开发的薄膜在延长氧气敏感食品 (如面包和医药) 的保质期方面的有效性.
主要方法:
- 用5%的NR挤出LDPE,以创建活性膜.
- 薄膜特性 (形态,屏障,延长) 的表征.
- 优化紫外线剂量对氧气清理动力学的优化.
- 福利埃变换红外光谱 (FTIR) 来确认氧气清理.
- 在面包和食品中进行应用测试,包括感官分析和微生物负载研究.
主要成果:
- 该LDPE-NR膜保持了良好的形态和屏障特性,并增强了延长.
- 优化的紫外线处理产生了61cc/g的总清理能力.
- FTIR分析证实了氧气清理活动.
- 面包的保质期从2-3天延长到4-5天.
- 胡的保质期延长了3天,保留了感官和营养属性.
结论:
- 开发的LDPE-NR吸氧膜在保护食品质量方面是有效的.
- 该膜显著延长了面包和食品的保质期.
- 这种主动包装技术提供了一个可行的解决方案,以减轻与氧气相关的食物腐烂.
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