Preparation of cellulose nanofibril/titanium dioxide nanoparticle nanocomposites as fillers for PVA-based packaging and investigation into their intestinal toxicity

被引：30

作者：

Yu, Zhilong ^{[1
]}

Wang, Wei ^{[1
]}

Sun, Lin ^{[1
]}

Kong, Fanbin ^{[2
]}

Lin, Mengshi ^{[1
]}

Mustapha, Azlin ^{[1
]}

机构：

[1] Univ Missouri, Div Food Syst & Bioengn, Food Sci Program, Columbia, MO 65211 USA

[2] Univ Georgia, Dept Food Sci & Technol, Athens, GA 30602 USA

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2020年 / 156卷

基金：

美国食品与农业研究所;

关键词：

Nanocellulose; Titanium dioxide nanoparticle; Food packaging; Intestinal bacteria; Human colon cell; Toxicity; TITANIUM-DIOXIDE; POLYVINYL-ALCOHOL; TIO2; NANOPARTICLES; FILMS; NANOCRYSTALS; TECHNOLOGIES; FABRICATION; MECHANISM;

D O I：

10.1016/j.ijbiomac.2019.11.153

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：

The aims of this work were to synthesize cellulose nanofibril/titanium dioxide nanoparticle (CNF/TiO2NP) nanocomposites, evaluate the use of CNF/TiO2NP nanocomposites in PVA-based films, and investigate the intestinal toxicity of the nanocomposites. Via a mixing method, CNF/TiO2NP nanocomposites were synthesized. The addition of the nanocomposites significantly enhanced the tensile strength, Young's modulus, and light barrier capacity of PVA films. Moreover, a high concentration of CNF/TiO2NP nanocomposites (10 mg/mL) had no appreciable effect on the growth of Escherichia colt P-24, Lactobacillus acidophilus ADEL and Bifidobacterium animalis Bif-6 cells. The nanocomposites did not exhibit significant toxicity to cancerous and normal colon cells even when their concentrations increased to a high level of 1000 mu g/mL. The results indicate that CNF/TiO2NP nanocomposites can potentially be used as functional fillers for a PVA-based packaging system. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：1174 / 1182

页数：9