잠시만 기다려 주세요. 로딩중입니다.

In Vitro Experiment to Evaluate 137Cs Dissolution in the Digestion Process of Mushrooms

방사선방어학회지 2020년 45권 4호 p.154 ~ 162
Nishiono Kanoko, Yamanishi Hirokuni,
소속 상세정보
 ( Nishiono Kanoko ) - Kindai University Graduate School of Science and Engineering
 ( Yamanishi Hirokuni ) - Kindai University Atomic Energy Research Institute

Abstract


Background: Several studies have reported that wild mushrooms contain high amounts of radioactive cesium (137Cs). After the Fukushima Daiichi Nuclear Power Plant Accident, a significantly high concentration of 137Cs has been detected in wild mushrooms, and their consumption may be the cause of the chronic internal exposure of local consumers to radioactivity. Therefore, an accurate evaluation of the internal radioactivity resulting from mushroom ingestion is needed.

Materials and Methods: The 137Cs elution rate through the cooking and digestion stages was evaluated using in vitro experiments. The edible mushroom Pleurotus djamor was taken as a sample for the experiments. The mushrooms were cultivated onto solid media containing 137Cs. We evaluated the internal dose based on the actual conditions using the elution rate data. For various cooking methods, the results were compared with those of other wild edible mushrooms.

Results and Discussion: From the elution experiment through cooking, we proved that 25%?55% of the 137Cs in the mushrooms was released during soaking, boiling, or frying. The results of a simulated digestion experiment after cooking revealed that almost all the 137Cs in the ingested mushrooms eluted in the digestive juice, regardless of the cooking method. The committed effective dose was reduced by 20%?75% when considering the dissolution through the cooking process.

Conclusion: We found that cooking lowers 137Cs concentration in mushrooms, therefore reducing the amount of radioactivity intake. Besides, since there were differences between mushroom types, we demonstrated that the internal exposure dose should be evaluated in detail considering the release of 137Cs during the cooking stages.

키워드

Mushroom; Radioactive Cesium; Internal Dose; Existing Exposure; Ingestion; In Vitro Experiment

원문 및 링크아웃 정보

등재저널 정보

KCI