Home About us MoEF Contact us Sitemap Tamil Website  
About Envis
Whats New
Microorganisms
Research on Microbes
Database
Bibliography
Publications
Library
E-Resources
Microbiology Experts
Events
Online Submission
Access Statistics

Site Visitors

blog tracking


 
International Journal of Hygiene and Environmental Health
Vol.
212, No.1, 2009; Pages: 61 - 66

Utilization of chemically oxidized polystyrene as co-substrate by filamentous fungi

Oriana Motta, Antonio Proto, Francesco De Carlo, Francesco De Caro, Emanuela Santoro, Luigi Brunetti, Mario Capunzo

Department of Educational Science, Chair of Hygiene, University of Salerno, via Ponte don Melillo, 84084 Fisciano (SA), Italy.

Abstract

Atactic polystyrene, one of the most widely used chemical products, was subjected to novel chemically oxidative treatments able to trigger a great variety of physical and chemical changes in the polymer's chains. The oxidized polystyrene samples, when analyzed with Fourier transform infrared spectroscopy (FTIR) clearly showed the formation of carbonyl groups and hydroxyl groups, which increased with the increase in the strength of chemically oxidative treatments. In fungal degradation tests deploying Curvularia species, the fungus colonized the oxidized samples within 9 weeks. Colonization was confirmed by microscopic examination, which showed that the hyphae had adhered to and penetrated the polymer's structure in all the treated samples. Such colonization and adhesion by microorganisms are a fundamental prerequisite for biodegradation of polymers.

Keywords:Polystyrene; Oxidation; Degradation; Fungi; Curvularia.


 

 

 
Copyright © 2005 ENVIS Centre ! All rights reserved
This site is optimized for 1024 x 768 screen resolution