Radionuclide Activity Concentrations of Agaricus bisporus and Pleurotus ostreatus Mushrooms Cultivated in Different Commercial Companies

In this study, it was determined the specific activities of some important radionuclides such as thorium ( 232 Th), uranium ( 238 U), potassium ( 40 K) and cesium ( 137 Cs) accumulated in Agaricus bisporus and Pleurotus ostreatus commercial mushrooms and in their compost.Additionally, the annual effective dose rates received by individuals were calculated.137 Cs activity was not detected in any tested mushrooms.The specific activity concentrations of 232 Th, 238 U, 40 K were determined in range of 2.1˗9.2,14.6˗26.6 and 330.4˗739.7 Bq/kg, respectively in both mushroom species obtained from different firms.Same radionuclides' activity concentrations were calculated in range of 11.0˗19.1,27.8˗45.1,126.7˗304.5 Bq/kg, respectively, in their compost.Among the Agaricus species, the highest 232 Th and 238 U activity concentration was calculated in the mushroom obtained from D firm.The highest 40 K activity concentration was detected in the mushroom provided from A firm.The lowest 238 U and the highest 232 Th concentrations were determined in Pleurotus ostreatus.Generally, all radionuclides were found different from each other statistically.However, all investigated parameters revealed that there was no any health risk in both mushroom species cultivated in different firms.