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International Journal of Polymer Science
Volume 2015, Article ID 184616, 7 pages
http://dx.doi.org/10.1155/2015/184616
Research Article

Modification Effect of Cellulase on the Physicochemical Characteristic of Polysaccharides Edible Films

Department of Animal Products Technology and Quality Management, Wrocław University of Environmental and Life Sciences, 37 Chelmonskiego Street, 51-630 Wrocław, Poland

Received 18 June 2015; Revised 1 August 2015; Accepted 4 August 2015

Academic Editor: Vitor Sencadas

Copyright © 2015 Anna Zimoch-Korzycka et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study was conducted to assess hydrolytic influence of cellulase (C) on the physicochemical stability of chitosan (CH)/hydroxypropyl methylcellulose (HPMC) films in time of storage (T). Initially, nine films were physically characterized by contact angle, water vapour permeability (WVP), water activity , tensile test, dynamic mechanical thermal analysis (DMTA), and thermogravimetric analysis (TGA) and chemically by Fourier Transform Infrared Spectrometry (FTIR). The contact angle results varied from 53.67° to 78.33°. The presence of the enzyme and passing time reduced the WVP from to  g/s·m·Pa. The enzyme treatment improved elasticity but decreased tensile strength of films. After adding cellulase was shifted to a higher temperature. Thermal stability of the films decreased with addition of cellulase and after prolonging storage time. FTIR analysis proved that chemical changes in polysaccharides structure were caused by cellulase incorporation in films composition, which may be observed in appearance of 1656 cm−1 band. The values did not change.