Development of wheat gluten/nanocellulose/titanium dioxide nanocomposites for active food packaging

被引:178
作者
El-Wakil, Nahla A. [1 ]
Hassan, Enas A. [1 ]
Abou-Zeid, Ragab E. [1 ]
Dufresne, Alain [2 ]
机构
[1] Natl Res Ctr, Cellulose & Paper Dept, Giza 12622, Egypt
[2] Grenoble Inst Technol Grenoble INP, Int Sch Paper Print Media & Biomat Pagora, F-38402 St Martin Dheres, France
关键词
Bionanocomposites; Cellulose nanocrystals; Wheat gluten; TiO2; nanoparticle; Active food packaging; WATER-VAPOR PERMEABILITY; BARRIER PROPERTIES; PHYSICOCHEMICAL PROPERTIES; MECHANICAL-PROPERTIES; ESCHERICHIA-COLI; COATED PAPER; IN-VITRO; CELLULOSE; CHITOSAN; TIO2;
D O I
10.1016/j.carbpol.2015.01.076
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Bionanocomposites were developed by casting/evaporation of wheat gluten (WG), cellulose nanocrystals (CNC), and TiO2 nanoparticles. The effect of addition of different percentages of CNC, and TiO2 on tensile strength (TS), Young's modulus and water sensitivity was studied. A significant improvement in the studied properties is observed when 7.5% CNC and 0.6%TiO2 is added to WG.WG/CNC7.5%/0.6%TiO2 blend suspension was chosen to coat commercial packaging unbleached kraft paper sheets via 1, 2 and 3 coating layers. A significant enhancement of 56% and 53% in breaking length and burst index, respectively, was achieved for 3 layers coated paper. The antimicrobial activity of the coated papers, against Saccharomyces cervisiae, Gram-negative bacteria Escherichia coli and Gram-positive bacteria Staphylococcus aureus, was investigated and expressed in terms of reduction % of surviving number (CFU) of the tested organisms. More than 98.5% reduction in CFU was observed against the organisms compared to TiO2-free coated paper. (c) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:337 / 346
页数:10
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