Hydroxy citric acid cross-linked chitosan/guar gum/poly(vinyl alcohol) active films for food packaging applications

被引：69
作者：
Bhat, Veena G. [1 ]
Narasagoudr, Shivayogi S. [1 ]
Masti, Saraswati P. [1 ]
Chougale, Ravindra B. [2 ]
Shanbhag, Yogesh [3 ]
机构：
[1] Karnatak Sci Coll, Dept Chem, Dharwad 580001, Karnataka, India
[2] Karnatak Univ, Postgrad Dept Chem, Dharwad 580003, Karnataka, India
[3] KLE Technol Univ, Dept Chem, Hubli 580031, Karnataka, India
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2021年 / 177卷
关键词：
Hydroxy citric acid; Antibacterial activity; Food packaging; POLY(VINYL ALCOHOL); POLYVINYL-ALCOHOL; COMPOSITE FILMS; BLEND FILMS; GUAR GUM; PHYSICOCHEMICAL PROPERTIES; ANTIMICROBIAL ACTIVITY; ANTIBACTERIAL; NANOCOMPOSITE; STARCH;
D O I：
10.1016/j.ijbiomac.2021.02.109
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 present work aims to prepare Chitosan (CS)/Guar gum (GG)/Poly(vinyl alcohol) (PVA) cross-linked with Hydroxy citric acid (HCA) (CGPH active film) by solvent casting technique. The influence of HCA on different CS/PVA ratio (1:3, 1:1, 3:1) in presence of the fixed amount of GG (0.2%) was investigated. The analysis of the results showed that the addition of HCA to the different ratio of CS/PVA increased the degradation temperature and improved the mechanical properties of CGPH active films. FTIR spectra and XRD analysis revealed strong interactions among the components of CGPH active films. The analysis of SEM images and water contact angle suggested a compact, dense film surface with hydrophobic nature. Further, all the active films have shown a decrease in water vapour permeability (WVP) and acted as a barrier to UV-light. CGPH active films effectively inhibited the growth of S. aureus and E. coli bacteria. With all these features the CGPH active films can find application in food packaging. (c) 2021 Elsevier B.V. All rights reserved.
引用
收藏
页码：166 / 175
页数：10
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