Effects of gamma irradiation on macro and microelements of Boletus edulis Bull.: Fr. and Hydnum repandum L.: Fr.

Fernandes, Ângela; Barreira, João C.M.; Antonio, Amilcar L.; Morales, Patricia; Fernández-Ruiz, Virginia; Oliveira, Beatriz; Martins, Anabela; Ferreira, Isabel C.F.R.

http://hdl.handle.net/10198/11703

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Autores

Fernandes, Ângela

Barreira, João C.M.

Antonio, Amilcar L.

Morales, Patricia

Fernández-Ruiz, Virginia

Oliveira, Beatriz

Martins, Anabela

Ferreira, Isabel C.F.R.

Resumo(s)

Mushrooms are considered excellent sources of minerals, being necessary to know the levels of essential elements in the edible species [1]. Mineral elements are classified in macro (e.g., Ca, Mg, Na, K) and microelements (e.g., Fe, Cu, Mn, Zn) with functions that include maintaining acid-base balance, osmotic regulation, oxygen transport and enzymatic cofactors [2-3]. Mushrooms need special caution in their conservation. Accordingly, treatments such as gamma rays have been applied to improve their shelf life and reduce health hazards caused by pathogenic microorganisms [4]. In this work, gamma irradiation was applied to Boletus edulis Bull.: Fr. and Hydnum repandum L.: Fr. to assess the effects on the minerals composition. The fruiting bodies were collected in Trás-os-Montes (Northeast of Portugal) in November 2012. Fresh samples were irradiated in experimental equipment with four 60Co sources, at 1 and 2 kGy. The studied mushrooms presented high levels of macro and microelements. Up to the applied doses, some significant differences were observed. However, in most cases, changes did not follow a marked tendency, being more likely to be derived from the natural variability in mineral accumulation as a result of mushroom growth in different ecosystems. Hence, irradiation treatment, using gamma rays up to 2 kGy, is a suitable technique to disinfest and/or decontaminate wild mushrooms, independently of their species or physical state.

Palavras-chave

Wild mushrooms Boletus edulis Bull.: Fr. Hydnum repandum L.: Fr. Gamma irradiation Minerals

URI

http://hdl.handle.net/10198/11703

Citação

Fernandes, Amilcar L.; Barreira, João C.M.; Antonio, Amilcar L.; Morales, Patricia; Fernández-Ruiz, Virginia; Oliveira, M. Beatriz P.P.; Martins, Anabela; Ferreira, Isabel C.F.R. (2014). Effects of gamma irradiation on macro and microelements of Boletus edulis Bull.: Fr. and Hydnum repandum L.: Fr. In 62nd International Congress and Annual Meeting of the Society for Medicianl Plant and Natural Product Research. Guimarães