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Journal of Biomedicine and Biotechnology
Volume 2012, Article ID 565974, 8 pages
http://dx.doi.org/10.1155/2012/565974
Research Article

Biological Activities of the Polysaccharides Produced in Submerged Culture of Two Edible Pleurotus ostreatus Mushrooms

Department of Industrial Biotechnology, Faculty of Biotechnology, University of Agronomical Sciences and Veterinary Medicine Bucharest, 59 Marasti Boulevard, 011464 Bucharest, Romania

Received 9 February 2012; Revised 8 April 2012; Accepted 19 April 2012

Academic Editor: Ravindra N. Chibbar

Copyright © 2012 Emanuel Vamanu. 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

Exopolysaccharides (EPS) and internal (intracellular) polysaccharides (IPS) obtained from the Pleurotus ostreatus M2191 and PBS281009 cultivated using the batch system revealed an average of between 0.1–2 (EPS) and 0.07–1.5 g/L/day (IPS). The carbohydrate analysis revealed that the polysaccharides comprised 87–89% EPS and 68–74% IPS. The investigation of antioxidant activity in vitro revealed a good antioxidant potential, particularly for the IPS and EPS isolated from PBS281009, as proved by the EC50 value for DPPH, ABTS scavenging activity, reducing power, and iron chelating activity.