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How gamma-rays and electron-beam irradiation would affect the antimicrobial activity of differently processed wild
M J Alves1, Â Fernandes, J C M Barreira
1Escola Superior de Saúde, Instituto Politécnico de Bragança, Bragança, Portugal; Unidade Local de Saúde do Nordeste - Unidade de Mirandela, Mirandela, Portugal; Centro de Investigação de Montanha (CIMO), ESA, Instituto Politécnico de Bragança, Bragança, Portugal.
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.
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