Concentrations of 137Cs and 40K in mushrooms consumed in Japan and radiation dose as a result of their dietary intake.
Concentrations of 137Cs and 40K in mushrooms consumed in Japan and radiation dose as a result of their dietary intake.
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日本食用的蘑菇中 137C 和 40K 的浓度以及其饮食摄入导致的辐射剂量。
DOI：
10.1269/jrr.45.325
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发表时间：
2004
影响因子：
2
通讯作者：
S. Yoshida
中科院分区：
文献类型：
--
作者：
T. Ban;Y. Muramatsu;S. Yoshida
蘑菇可以积累放射性铯。为估计食用蘑菇摄入放射性铯的量，对香菇、真姬菇、灰树花和松茸4种常见食用菌的30个样品进行了137 Cs和40 K的分析。（137）Cs的浓度范围为0.060-29 Bq kg（-1）（湿重），（40）K的浓度范围为38-300 Bq kg（-1）（湿重）。（137）Cs的几何平均浓度为0.56 Bq kg（-1）（湿重），（40）K的平均浓度为92 Bq kg（-1）（湿重）。L.在蘑菇床（木屑-米糠培养基）上培养的香菇比在原木床（天然木材与树皮）上培养的香菇低。根据日本目前的分析结果和食物消费数据，计算出每人每年通过蘑菇摄入的（137）Cs为3.1 Bq，约占该核素总膳食摄入量的28%。（137）Cs通过蘑菇的有效剂量当量估计为4.0 currency 10（-8）Sv，这大约是我们以前研究中获得的值的一半。通过蘑菇摄入的（137）Cs的减少可能与近年来栽培方法的变化有关，从使用原木到蘑菇床。
Mushrooms are known to accumulate radiocesium. To estimate the intake of radiocesium through the eating of mushrooms, about 30 samples belonging to 4 commonly consumed species (Lentinula edodes, Hypsizigus marmoreus, Grifola frondosa, and Tricholoma matsutake), were analyzed for (137)Cs and (40)K. The concentration ranges were 0.060-29 Bq kg(-1) (wet wt) for (137)Cs and 38-300 Bq kg(-1) (wet wt) for (40)K. The geometric mean concentration for (137)Cs was 0.56 Bq kg(-1) (wet wt), and the mean concentration for (40)K was 92 Bq kg(-1) (wet wt). The (137)Cs concentrations in L. edodes cultivated in mushroom beds (sawdust-rice bran media) were lower than those cultivated on bed logs (natural wood with bark). The annual intake of (137)Cs per person through mushrooms was calculated, by using the current analytical results and food consumption data in Japan, to be 3.1 Bq for (137)Cs, which is about 28% of the total dietary intake of this nuclide. The effective dose equivalent of (137)Cs through mushrooms was estimated to be 4.0 currency 10(-8) Sv, which is about the half the value obtained in our previous study. The decrease of the (137)Cs intake through mushrooms is probably related to changes in cultivation methods in recent years, from the use of bed logs to mushroom beds.