在用于冷链包装的纳米纤维素低温凝胶-聚乙二醇(PEG)复合材料中利用酿酒业废弃物的价值

IF 10.7 1区 化学 Q1 CHEMISTRY, APPLIED
Nadia Ahmadi Heidari , Nasser Hamdami , Gilberto Siqueira , Gustav Nyström
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引用次数: 0

摘要

全球对食物和能源浪费的关注,呼唤新的可持续解决方案。相变材料(PCM)是一种前景广阔的热存储和管理材料,具有减少食物浪费的潜力,但它们往往存在泄漏和形状不稳定的问题。在这里,我们利用酿酒业中容易获得且成本效益高的副产品,开发了一种绿色的形状稳定聚乙二醇 300 (PEG) 纳米纤维素基复合材料。研究人员采用两种不同的方法将 PEG 加入纤维素纳米纤维(CNF)冷凝胶中,包括在溶胶阶段加入不同干质量比的 PEG(无论有无物理交联),或在 CNF 凝胶化后加入 PEG。傅立叶变换红外光谱和热重分析表明,PEG 加入 CNF 冷凝凝胶后热稳定性得到了改善。在凝胶阶段添加 PEG 所制成的 PEG/CNF 复合材料的热焓值(93.2 J/g)最高,机械性能(杨氏模量为 140 kPa)最好,优于其他材料配方。当冷系统中断时,含有 PEG/CNF 复合材料的包装能将肉温保持在 0 °C 以下的时间比对照包装长约 4 倍。此外,PEG/CNF 复合材料对冻肉的色泽和滴水损失值也有积极影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Valorizing brewery industry waste in nanocellulose cryogel-PEG composites for cold chain packaging
Global concerns about food and energy waste call for new sustainable solutions. Phase changing materials (PCM) are promising thermal storage and management materials which have potential to mitigate food waste, yet they often suffer from leakage and non-shape stability. Here, a green shape-stabilized polyethylene glycol 300 (PEG) nanocellulose-based composite was developed using readily available and cost-effective side streams from the brewery industry. Two different routes were examined for the incorporation of PEG into the cellulose nanofiber (CNF) cryogel including adding different dry mass ratios of PEG in the sol stage, with or without physical crosslinking, or adding the PEG after CNF gelation. FTIR and TGA analysis revealed the improved thermal stability of PEG after incorporation into the CNF cryogel. The PEG/CNF composite produced by adding PEG in the gel stage outperformed the other material formulations by demonstrating the highest enthalpy value (93.2 J/g) and the best mechanical properties (Young's modulus of 140 kPa). The package containing the PEG/CNF composite could maintain the meat temperature below 0 °C around 4 times longer than the control package when the cold system was interrupted. Furthermore, the PEG/CNF composite showed a positive effect on the color and drip loss values of frozen meat.
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来源期刊
Carbohydrate Polymers
Carbohydrate Polymers 化学-高分子科学
CiteScore
22.40
自引率
8.00%
发文量
1286
审稿时长
47 days
期刊介绍: Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience. The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.
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