Effect of modified clays on the structure and functional properties of biofilms produced with zein

被引:6
|
作者
Tavares, Luciana Lopes [1 ]
De Almeida, Crislene Barbosa [1 ]
Caruso, Icaro Putinhon [2 ]
Cornelio, Marinonio Lopes [2 ]
Lopes Filho, Jose Francisco [1 ]
机构
[1] Sao Paulo State Univ UNESP, Dept Food Engn & Technol, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
[2] Sao Paulo State Univ UNESP, Dept Phys, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
来源
CIENCIA E TECNOLOGIA DE ALIMENTOS | 2012年 / 32卷 / 02期
基金
巴西圣保罗研究基金会;
关键词
biofilms; zein; clays; microcomposite; tactoids; BARRIER PROPERTIES; EDIBLE FILMS; NANOCOMPOSITES; GLYCEROL; ACID;
D O I
10.1590/S0101-20612012005000056
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
The purpose of this study was to evaluate changes in the structure and some functional properties of biofilms added with modified clays (Cloisite (R) 15A and Cloisite (R) 30B) prepared by the casting method. The analysis of the microstructure of the films, scanning electron microscopy (SEM), Optical microscopy (MO), and Infrared Spectroscopy (FTIR) indicated that the addition of clay in the films resulted in the formation of a heterogeneous microstructure, microcomposite or tactoid. Due to the formation of a microcomposite structure, functional properties of the films added with both clays such as opacity, solubility, and permeability to water vapor (PVA), were not better than those of the control film. Thus, it was concluded that although it is possible to produce a film added with modified clays using the casting method, it was not possible to obtain intercalation or exfoliation in a nanocomposite, which would result in improved functional properties.
引用
收藏
页码:314 / 322
页数:9
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