Chitosan and Cystatin/Lysozyme Preparation as Protective Edible Films Components

摘要: This work characterizes biological, physical, and chemical properties of films formed from an aqueous solution hydroxypropyl methylcellulose (HPMC), with different concentrations chitosan (CH) bioactive cystatin/lysozyme preparation (C/L). The biocomposites were examined by Dynamic Mechanical Analysis (DMA), Fourier’s transfer infrared spectroscopy (FTIR), water vapour permeability (WVP), tensile testing. Antimicrobial activity against Micrococcus flavus, Bacillus cereus, Escherichia coli, Pseudomonas fluorescens, Candida famata was conducted. Films glass transition storage modulus dependent on the C/L CH concentration. Modulus values decreased during temperature scan higher reagents levels. An increase in resulted a decrease strength 2.62 to 1.08 MPa. It suggests hydrolyzing influence C/L, also observed smaller peak size α relaxation. addition caused shifting temperature. DMA FTIR analysis proved that HPMC are compatible polymers. Water resistance improved rising concentration . highest inhibition zone M. flavus C. recorded at C/L.