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International Journal of Polymer Science
Volume 2013, Article ID 825296, 6 pages
http://dx.doi.org/10.1155/2013/825296
Research Article

Influence of Physical and Chemical Modification on the Optical Rotatory Dispersion and Biological Activity of Chitosan Films

1Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russia
2Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospect Enthusiastov, Saratov 410049, Russia

Received 23 August 2012; Revised 22 April 2013; Accepted 22 April 2013

Academic Editor: Jose Ramon Leiza

Copyright © 2013 A. B. Shipovskaya 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

The optical and bactericidal properties of acetic and basic chitosan films were studied. By the ORD technique, we found that these films differed in the values of their specific optical rotation and of their rotary and dispersive constants. A sign inversion of was observed when the acetic chitosan films were heat-treated. The bactericidal activity of the initial and dehydrated acetic films was analyzed, and their moisture content and optical and biological activities were compared.