Multilayers assembly of bio-polyelectrolytes onto surface modified polypropylene films: Characterization, chelating and antioxidant activity

被引：9

作者：

Yu, Zhen ^{[1
]}

Lu, Lijing ^{[1
,2
]}

Lu, Lixin ^{[1
,2
]}

Pan, Liao ^{[1
,2
]}

机构：

[1] Jiangnan Univ, Dept Packaging Engn, 1800 Lihu Ave, Wuxi 214122, Jiangsu, Peoples R China

[2] Jiangsu Key Lab Adv Food Mfg Equipment & Technol, Wuxi 214122, Jiangsu, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2020年 / 245卷

基金：

国家重点研发计划;

关键词：

Chitosan; Sodium alginate; Multilayers assembly; Chelation behavior; Trace transition metal ions; Antioxidant food package; MOLECULAR-WEIGHT; CHITOSAN; IMMOBILIZATION; ALGINATE; ADSORPTION; MEMBRANES;

D O I：

10.1016/j.carbpol.2020.116456

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In order to remove the trace transition metal ions which catalyze the oxidation in food, chitosan (CS) and sodium alginate (ALG) multilayers were assembled on the polypropylene (PP) surface grafted with polyacrylic acid (PAA) to obtain PP-g-PAA/(CS/ALG)(n) films. The morphology of the active films was observed, and the thickness of each single assembled layer was about 7 nm. The chelation ability of the films improved with increasing number of (CS/ALG)n multilayers, and Cu2+ chelating quantity of PP-g-PAA/(CS/ALG)(15.5) films was about 3.4 umol/cm(2) for 72 h at pH about 5, improved by about 9.92 % as compared with PP-g-PAA films. In addition, the PP-g-PAA/(CS/ALG)(n) films had chelation activity for both Cu2+ and Fe2+, suggesting the potentiality in anti-oxidant food package application.

引用

页数：8