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在纳米纤维素冷凝-PEG复合材料中对酒行业废物进行价值化,用于冷链包装
Nadia Ahmadi Heidari1, Nasser Hamdami2, Gilberto Siqueira3
1Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran; Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 DÜbendorf, Switzerland.
Carbohydrate polymers
|December 5, 2024
概括
一种基于纳米纤维素的新型复合材料有效地稳定了聚乙烯糖醇 (PEG),一种相变材料 (PCM). 这种可持续材料增强了热能储存,通过保持冷肉质量来减少食物浪费.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续工程 可持续工程
- 食品科学 食品科学 食品科学
背景情况:
- 全球粮食和能源浪费需要可持续的解决方案.
- 变相材料 (PCM) 提供热管理,但面临稳定性问题.
- 酒行业的副产品为具有成本效益的材料开发提供了机会.
研究的目的:
- 使用纳米纤维素和聚乙烯糖醇 (PEG) 开发一种绿色,形状稳定的复合材料.
- 研究将PEG纳入纤维素纳米纤维 (CNF) 冰凝的方法.
- 评估开发的复合材料的热,机械和食品保存性能.
主要方法:
- 使用不同的合并路径 (溶液与凝阶段) 制造PEG/CNF复合材料.
- 富里埃变换红外线 (FTIR) 和热重力测量分析 (TGA) 用于材料表征.
- 凝聚力,机械 (斯模量) 和冷肉的保存试验.
主要成果:
- 在凝阶段添加PEG制成的PEG/CNF复合物表现出优越的热稳定性和机械性能 (Young的模量:140kPa).
- 这种优化的复合材料实现了高值93.2 J/g.
- 与对照包装相比,复合材料将冷肉的温度维持在0°C以下的时间延长了大约四倍,并改善了肉质指标.
结论:
- 从酒厂废弃物中成功开发出一个具有成本效益和可持续性的PEG/CNF复合物.
- 优化的复合材料表现出极好的形状稳定性,热能储存和机械性能.
- 这种材料显示出通过改善冷链管理来减轻食物浪费的巨大潜力.
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