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BioMed Research International
Volume 2013 (2013), Article ID 313905, 11 pages
http://dx.doi.org/10.1155/2013/313905
Research Article

Antioxidant Capacity and the Correlation with Major Phenolic Compounds, Anthocyanin, and Tocopherol Content in Various Extracts from the Wild Edible Boletus edulis Mushroom

1Department of Industrial Biotechnology, Faculty of Biotechnology, University of Agronomical Sciences and Veterinary Medicine Bucharest, 59 Marasti Boulevard, 011464 Bucharest, Romania
2Department of Physical-Chemical Analysis and Quality Control, National Institute for Chemical-Pharmaceutical Research and Development (ICCF Bucharest), 112 Vitan Road, 031299 Bucharest, Romania

Received 12 September 2012; Accepted 16 October 2012

Academic Editor: Marija Mostarica-Stojković

Copyright © 2013 Emanuel Vamanu and Sultana Nita. 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

Boletus edulis is a wild edible mushroom habitually consumed by rural populations. Ethanolic and methanolic extracts was obtained in cold and hot water from dried fruit bodies. The antioxidant activity of freeze-dried extracts from B. edulis were investigated using free radicals scavenging activity, reducing power, metal chelating effect, inhibition of lipid peroxidation, and the identification of antioxidant compounds. The levels of different compounds with antioxidant properties were higher in alcoholic extracts compared with aqueous extracts. Rosmarinic acid was the major phenolic compound, it being identified in a concentration between and  mg/100 g extract. A positive correlation between the content of total phenols, flavonoids, anthocyanins, and tocopherols, and the antioxidant capacity of the extracts was determined. The results showed that the ethanolic extract of Romanian wild mushroom B. edulis represents a natural source of functional compounds.