Antimicrobial and degradable all-cellulose composite for functional and sustainable food packaging

IF 5.6 1区 农林科学 Q1 AGRICULTURAL ENGINEERING Industrial Crops and Products Pub Date : 2024-11-05 DOI:10.1016/j.indcrop.2024.119966
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Abstract

The investigation of environmentally friendly and sustainable replacement materials is consistently prompted by the mounting environmental concern over plastics derived from petrochemicals. Compared with fossil oil derived chemicals and materials, cellulose is more readily available, less expensive, and biodegradable. Herein, all-cellulose composite films with excellent biodegradability and antimicrobial activities were prepared for sustainable food package. The all-cellulose films were prepared by a simple solution cast method of amino cellulose and carboxymethyl cellulose mixture. Rheological studies suggest typical non-Newtonian and shear thinning behavior of the all-cellulose solution associated with strong intermolecular electrostatic interactions. Such composite results in package films with amorphous structure, and uniform, dense and smooth morphology. Properties explorations indicated that the all-cellulose composites films exhibited better mechanical properties, water vapor and oxygen barrier properties than conventional synthetic plastic packages. Besides, the all-cellulose films showed excellent antimicrobial activity, and biodegradability. When applied as shrimp package, the all-cellulose composite films effectively extended shelf-life of shrimp by inhibition of microbial and oxidative deterioration of shrimp meat. This study provides a feasible approach to syntheze biodegradable and antimicrobial functional food package from cellulose in replacing of traditional synthetic plastic films.
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用于功能性和可持续食品包装的抗菌可降解全纤维素复合材料
随着人们对石化塑料的环境问题日益关注,环保型和可持续替代材料的研究也在不断深入。与从化石燃料中提炼的化学品和材料相比,纤维素更容易获得、成本更低且可生物降解。在此,我们制备了具有优异生物降解性和抗菌活性的全纤维素复合薄膜,用于可持续食品包装。全纤维素薄膜是通过氨基纤维素和羧甲基纤维素混合物的简单溶液浇注法制备的。流变学研究表明,全纤维素溶液具有典型的非牛顿和剪切稀化行为,与强烈的分子间静电作用有关。这种复合材料形成的包装膜具有无定形结构,形态均匀、致密、光滑。性能研究表明,与传统的合成塑料包装相比,全纤维素复合薄膜具有更好的机械性能、水蒸气和氧气阻隔性能。此外,全纤维素薄膜还具有出色的抗菌活性和生物降解性。将全纤维素复合薄膜用作虾的包装时,可抑制虾肉的微生物和氧化变质,从而有效延长虾的货架期。这项研究为利用纤维素合成可生物降解和抗菌的功能性食品包装提供了一种可行的方法,可替代传统的合成塑料薄膜。
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来源期刊
Industrial Crops and Products
Industrial Crops and Products 农林科学-农业工程
CiteScore
9.50
自引率
8.50%
发文量
1518
审稿时长
43 days
期刊介绍: Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.
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