Fabrication and Characterization of Eco-Friendly Polyelectrolyte Bilayer Films Based on Chitosan and Different Types of Edible Citrus Pectin
文献类型： 外文期刊
作者： Fu, Xincheng 1 ; Chang, Xia 1 ; Ding, Zemin 1 ; Xu, Haishan 1 ; Kong, Hui 1 ; Chen, Fei 3 ; Wang, Rongrong 3 ; Shan, Yang 1 ; Ding, Shenghua 1 ;
作者机构： 1.Hunan Univ, Coll Biol, Longping Branch, Changsha 410125, Peoples R China
2.Hunan Acad Agr Sci, Hunan Agr Prod Proc Inst, Hunan Prov Key Lab Fruits & Vegetables Storage Pr, Changsha 410125, Peoples R China
3.Hunan Agr Univ, Coll Food Sci & Technol, Changsha 410128, Peoples R China
关键词： polyelectrolyte bilayer film; eco-friendly; citrus pectin; chitosan; mechanical property; gas barrier; antifogging property
期刊名称：FOODS （ 影响因子：5.561； 五年影响因子：5.94 ）
ISSN：
年卷期： 2022 年 11 卷 21 期
页码：
收录情况： SCI
摘要： The eco-friendly polyelectrolyte bilayer films were prepared by layer-by-layer (LBL) casting method using chitosan (CS) and four types of edible citrus pectin as film substrates. The results showed that the polyelectrolyte bilayer films exhibited excellent comprehensive properties. Furthermore, the interaction between CS and pectin was closely related to the degree of methyl-esterification (DM), molecular weight (M-w), and zeta potential of pectin. The low DM, M-w, and high zeta potential of the low methyl-esterified pectin (LM) resulted in a denser internal structure of the bilayer film, stronger UV shielding performance, and stronger gas barrier ability. The high DM and M-w of the high methyl-esterified pectin (HM) endow the bilayer film with stronger mechanical properties, thermal stability, and antifogging property. The microstructural and spectroscopic analysis showed that there are hydrogen bonds and electrostatic interactions between the layers. Overall, the developed CS-pectin polyelectrolyte bilayer films provided potential applications for food bioactive packaging.
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