Preparation of robust and fully bio-based modified paper via mussel-inspired layer-by-layer assembly of chitosan and carboxymethyl cellulose for food packaging

被引:31
作者
Yu, Fuyou [1 ]
Shi, Hongbo [1 ]
Wang, Kun [1 ]
Li, Hui [1 ]
Peng, Lincai [2 ]
机构
[1] Kunming Univ Sci & Technol, Fac Food Sci & Technol, Kunming 650500, Peoples R China
[2] Kunming Univ Sci & Technol, Fac Chem Engn, Kunming 650500, Peoples R China
基金
中国国家自然科学基金;
关键词
Antibacterial activity; Barrier property; Food packaging paper; MICROBIOLOGICAL QUALITY; FABRICATION; MULTILAYER; STABILITY; FILMS;
D O I
10.1016/j.ijbiomac.2022.09.243
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A green and facile method was proposed to prepare robust and fully bio-based modified paper in this study, which involved in layer-by-layer deposition of chitosan (CS) and mussel adhesive protein-mimetic polymer (dopamine-grafted carboxymethyl cellulose, CMC-g-DA) on paper surface and subsequent oxidative cross-linking by sodium periodate. The mechanical, barrier and antibacterial properties of the cross-linked multilayer-modi-fied paper significantly improved with the increased bilayer numbers. Compared with unmodified paper, cross -linked (CS/CMC-g-DA)6 multilayer-modified paper exhibited 71.6 % improvement in tensile strength, 69.2 % and 56.3 % decline in air and water vapor permeability, as well as above 90 % antibacterial efficiency against S. aureus and E. coli. Particularly, the cross-linked multilayer-modified paper maintained outstanding functional stability even after suffering from vigorously corrosive treatment. The obtained functional paper effectively extended the shelf-life of Agaricus bisporus to 6 days under ambient conditions. We believed that the prepared robust functional paper in this study will have promising application prospect in food packaging field.
引用
收藏
页码:1238 / 1249
页数:12
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