Characterization and antioxidant properties of chitosan film incorporated with modified silica nanoparticles as an active food packaging

被引：123

作者：

Dong, Wenxia ^{[1
]}

Su, Jiaqi ^{[1
]}

Chen, Yulu ^{[1
]}

Xu, Duoxia ^{[2
]}

Cheng, Lei ^{[2
]}

Mao, Like ^{[1
]}

Gao, Yanxiang ^{[1
]}

Yuan, Fang ^{[1
]}

机构：

[1] China Agr Univ, Coll Food Sci & Nutr Engn, Minist Educ, Key Lab Funct Dairy, Beijing 100083, Peoples R China

[2] Beijing Technol & Business Univ, Beijing Engn & Technol Res Ctr Food Addit, Beijing 100048, Peoples R China

来源：

FOOD CHEMISTRY | 2022年 / 373卷

关键词：

Silica Nanoparticles; Covalently grafting; Gallic acid; Antioxidant active; Chitosan film; Composite films;

D O I：

10.1016/j.foodchem.2021.131414

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this study, two modified silica nanoparticles (SiO2-GA NPs) were successfully obtained by covalently grafting gallic acid onto silica nanoparticles. The mean particle diameters of their were 112.7 +/- 0.55 nm (1-SiO2-GA NPs) and 408.7 +/- 3.20 nm (4-SiO2-GA NPs), respectively. Novel antioxidant active packaging composite films were prepared by incorporation of 1-SiO2-GA NPs or 4-SiO2-GA NPs into chitosan. The structure analysis of the composite films showed that intermolecular hydrogen bonds were formed between the two modified silica nanoparticles and chitosan. Compared with the chitosan film, the mechanical properties, water vapor barrier property and UV light barrier ability of the composite films were significantly improved. Moreover, the incorporated of the two modified silica nanoparticles significantly increased antioxidant activity of the composite films. This study indicates that composite films incorporated with modified silica nanoparticles, especially the incorporation of 1-SiO2-GA NPs can be used as novel antioxidant food packaging composite films.

引用

页数：9

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