Contents of carboxylic acids and two phenolics and antioxidant activity of dried Portuguese wild edible mushrooms

The organic acids and phenolics compositions of nine wild edible mushrooms species ( Suillus bellini, Tricholomopsis rutilans, Hygrophorus agathosmus, Amanita rubescens, Russula cyanoxantha, Boletus edulis, Tricholoma equestre, Suillus luteus, and Suillus granulatus) were determined by HPLC-UV and H...

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Bibliographic Details
Main Author: Ribeiro, Bárbara (author)
Other Authors: Rangel, Joana (author), Valentão, P. (author), Baptista, Paula (author), Seabra, R.M. (author), Andrade, P.B. (author)
Format: article
Language:eng
Published: 2008
Subjects:
Online Access:http://hdl.handle.net/10198/941
Country:Portugal
Oai:oai:bibliotecadigital.ipb.pt:10198/941
Description
Summary:The organic acids and phenolics compositions of nine wild edible mushrooms species ( Suillus bellini, Tricholomopsis rutilans, Hygrophorus agathosmus, Amanita rubescens, Russula cyanoxantha, Boletus edulis, Tricholoma equestre, Suillus luteus, and Suillus granulatus) were determined by HPLC-UV and HPLC-DAD, respectively. The antioxidant potential of these species was also assessed by using the DPPH¥ scavenging assay. The results showed that all of the species presented a profile composed of at least five organic acids: oxalic, citric, malic, quinic, and fumaric acids. In a general way, the pair of malic plus quinic acids were the major compounds. Only very small amounts of two phenolic compounds were found in some of the analyzed species: p-hydroxybenzoic acid (in A. rubescens, R. cyanoxantha, and T. equestre) and quercetin (in S. luteusand S. granulatus). All of the species exhibited a concentration-dependent scavenging ability against DPPH¥. T. rutilansrevealed the highest antioxidant capacity.