Open AccessRadical Scavenging Activity of Edible Fungal Sporocarp Extracts from the Niger Delta Region of Nigeria
Author(s) -
Basil N. Ita,
Samuel Eduok
Publication year - 2017
Publication title -
international journal of pharmacognosy and phytochemical research
Language(s) - English
Resource type - Journals
ISSN - 0975-4873
DOI - 10.25258/phyto.v9i4.8119
Subject(s) - pleurotus ostreatus , chemistry , dpph , food science , ascorbic acid , antioxidant , polyphenol , acetone , chelation , mushroom , pleurotus , scavenging , aqueous solution , nuclear chemistry , ethanol , organic chemistry
The radical scavenging activity of acetone, ethanol and aqueous extracts from Agaricus placomyces, Cantharellus cibariusand Pleurotus ostreatus from the Niger Delta region of Nigeria was determined with their metal chelating and reducingpower. The extracts exhibited significant free radical scavenging activities in the DPPH assay (IC50 = 2.11 to 4.37 mg/mL)with the aqueous extract from P. ostreatus being the most potent. Also, the aqueous extracts exhibited better metal chelatingabilities and reducing power than the ethanol and acetone extracts. In addition, higher content of total phenolics andflavonoids was found in the aqueous extract of A. placomyces (55.63mg GAE/g) and P. ostreatus (15.55 mgQE/g)respectively, whereas ascorbic acid ranged from 0.33 to 1.22 mgAAE/ in all the extracts. Overall, our results indicate thatmushrooms particularly Agaricus placomyces, and Pleurotus ostreatus contain high amount of polyphenolic compoundswith significant free radical scavenging abilities, notable metal chelating activities and promising reducing power. Theseproperties indicate that the mushrooms are functional foods with the potential to attenuate oxidative stress associated withfree radical damage in biological systems.