聚乙烯醇
壳聚糖
肿胀 的
席夫碱
透氧性
高分子化学
极限抗拉强度
核化学
醛
材料科学
化学
有机化学
复合材料
氧气
催化作用
作者
Feng Chen,Yixi Li,Yubing Qiu,Gongliang Zhang,Hongshun Hao,Hongman Hou,Jingran Bi
出处
期刊:Food Chemistry
[Elsevier]
日期:2023-12-01
卷期号:428: 136775-136775
被引量:17
标识
DOI:10.1016/j.foodchem.2023.136775
摘要
To develop food packaging with good antibacterial activity and mechanical performance, four amino carboxymethyl chitosan (ACC)//dialdehyde starch (DAS) /polyvinyl alcohol (PVA) films were prepared by Schiff base and hydrogen bond interactions for efficient loading and release of ε-polylysine (ε-PL). The effects of the Schiff base reaction on the physicochemical properties of the films were explored based on the different aldehyde group contents in DAS. The ACC//DAS4/PVA film exhibited a tensile strength of 62.5 MPa, and the water vapor and oxygen permeability was 8.77 × 10-3·g·mm/m2·d·kPa and 0.15 × 103·cm3·mm/m2·d, respectively. By leveraging the Schiff base reaction, the film swelling properties were improved by adjusting the cross-link density, mesh size, and molecular mass between the cross-links. The ACC//DAS4/PVA film could efficiently load ε-PL with a value of 98.44% and long-term release in a food simulant of 10% ethanol at 25 °C for 120 min. Moreover, the ACC-ε-PL//DAS4/PVA film was successfully used for salmon preservation.
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