Functional Properties of Antimicrobial Lysozyme‐Chitosan Composite Films

• DOI: 10.1111/j.1365-2621.2004.tb09890.x
• Publication Date: 2009-08-20T13:23:46Z
• Authors: S.‐I. Park; M.A. Daeschel; Y. Zhao
• Keywords: Matrix (chemical analysis)

ABSTRACT: Lysozyme‐chitosan composite films were developed for enhancing the antimicrobial properties of chitosan films. A 10% lysozyme solution was incorporated into 2% film‐forming (FFS) at a ratio 0%, 20%, 60%, and 100% (w lysozyme/w chitosan). Films prepared by solvent evaporation. Lysozyme release from film matrix, activity against Escherichia coli Streptococcus faecalis , basic investigated. The proportionally increased with increasing initial concentration in amount released natural log relationship time. 60% incorporation enhanced inhibition efficacy both S. E. where 3.8 cycles reduction 2.7 achieved. Water vapor permeability not affected incorporation, whereas tensile strength percent elongation values decreased concentration. Scanning electron microscopy images revealed that homogeneously distributed throughout matrix. This study demonstrated lysozyme‐chitosan can be achieved incorporating chitosan, thus broadening their applications ensuring food quality safety.