title: Contents of carboxylic acids and two phenolics and antioxidant activity of dried portuguese wild edible mushrooms.
abstract: 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. luteus and S. granulatus). All of the species exhibited a concentration-dependent scavenging ability against DPPH*. T. rutilans revealed the highest antioxidant capacity.
authors.affiliation: REQUIMTE/ Serviço de Farmacognosia, Faculdade de Farmacia, Universidade do Porto, R. Aníbal Cunha 164, 4050-047 Porto, Portugal.
authors.forename: Barbara
authors.initials: B
authors.lastname: Ribeiro
authors.forename: Joana
authors.initials: J
authors.lastname: Rangel
authors.forename: Patrícia
authors.initials: P
authors.lastname: Valentão
authors.forename: Paula
authors.initials: P
authors.lastname: Baptista
authors.forename: Rosa M
authors.initials: RM
authors.lastname: Seabra
authors.forename: Paula B
authors.initials: PB
authors.lastname: Andrade
mesh_terms: D000363:Agaricales / Q000737:chemistry* / Q000378:metabolism*; D000975:Antioxidants / Q000737:chemistry*; D002264:Carboxylic Acids / Q000032:analysis* / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D003890:Desiccation; D005502:Food; D010084:Oxidation-Reduction; D010636:Phenols / Q000032:analysis* / Q000737:chemistry; D011174:Portugal
chemical_list: D000975:Antioxidants; D002264:Carboxylic Acids; D010636:Phenols