Study on the scavenging and anti-Staphylococcusaureus activities of the extracts,fractions and subfractions of two Volvariella volvacea strains |
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Authors: | Rui Fernando da Silva Andréa Carla de Almeida Barros Márcia Pletsch Adriana Carla Cavalcante Malta Argolo Brancilene Santos de Araujo |
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Affiliation: | 1.Escola Agrotécnica Federal de Alagoas, Zona Rural,Satuba,Brazil;2.Santa Casa de Misericórdia de Maceió, Centro,Maceió,Brazil;3.Tabuleiro dos Martins, Instituto de Química e Biotecnologia,Universidade Federal de Alagoas,Maceió,Brazil;4.Centro Federal de Educa??o Tecnológica de Pernambuco,Pesqueira,Brazil;5.Departamento de Fisiologia, Centro de Ciências Biológicas e da Saúde,Universidade Federal de Sergipe,S?o Cristov?o,Brazil |
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Abstract: | Scavenging and anti-Staphylococcus aureus activities of extracts, fractions and subfractions from the in vitro mycelium of two strains of the edible mushroom Volvariella volvacea were determined. Chloroform subfractions of the ATCC62890 strain showed the highest inhibition percentage of the DPPH radical (over 80%) after 180 min. When chloroform and hexane subfractions of the R83 strain were combined they showed moderate (inhibition zone of 8.99 ± 0.78 mm) to high (inhibition zone of 13.06 ± 0.41 mm) activity against the Gram-positive bacteria Staphylococcus aureus, which are 74.4 and 51.2% of tetracycline (inhibition zone of 17.55 ± 0.11 mm). Partitioning suggested that the substances in the chloroform and hexane fractions of the R83 strain act synergistically to give the antimicrobial activity, while separating the substances of the ATCC62890 subfractions reduced their activity. In general, the R83 strain seems to be a source of antimicrobial substances, while the ATCC62890 strain appears to be an alternative source of antioxidants. |
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