How gamma‐rays and electron‐beam irradiation would affect the antimicrobial activity of differently processed wild mushroom extracts?

• Published in: Journal of applied microbiology Vol. 118; no. 3; pp. 592 - 598
• Main Authors: Alves, M.J, Fernandes, Â, Barreira, J.C.M, Lourenço, I, Fernandes, D, Moura, A, Ribeiro, A.R, Salgado, J, Antonio, A, Ferreira, I.C.F.R
• Format: Journal Article
• Language: English
• Published: England Published for the Society for Applied Bacteriology by Blackwell Science 01.03.2015; Oxford University Press
• Subjects: Agaricales - radiation effects; Anti-Bacterial Agents - pharmacology; Anti-Bacterial Agents - radiation effects; anti-infective properties; Antimicrobial agents; Bacteria - drug effects; Bacteria - isolation & purification; Boletus; Boletus edulis; Cell Extracts - pharmacology; Electrons; electron‐beam irradiation; Food irradiation; gamma radiation; Gamma Rays; gamma‐irradiation; Humans; Hydnum repandum; irradiation; irradiation technology; Macrolepiota; Microbiology; multiresistant bacteria; Mushrooms; patients; Russula; wild mushroom extracts; Portugal; ANE, Portugal; wild mushroom extracts; electron-beam irradiation; gamma-irradiation; multiresistant bacteria; irradiation technology
• ISSN: 1364-5072; 1365-2672
• DOI: 10.1111/jam.12718

AIMS: The effects of irradiation (gamma‐rays and electron‐beams), up to 10 kGy, in the antimicrobial activity of mushroom species (Boletus edulis, Hydnum repandum, Macrolepiota procera and Russula delica) differently processed (fresh, dried, freeze) were evaluated. METHODS AND RESULTS: Clinical isolates with different resistance profiles from hospitalized patients in Local Health Unit of Mirandela, Northeast of Portugal, were used as target micro‐organisms. The mushrooms antimicrobial activity did not suffer significant changes that might compromise applying irradiation as a possible mushroom conservation technology. CONCLUSIONS: Two kGy dose (independently of using gamma‐rays or electron‐beams) seemed to be the most suitable choice to irradiate mushrooms. SIGNIFICANCE AND IMPACT OF THE STUDY: This study provides important results in antimicrobial activity of extracts prepared from irradiated mushroom species.