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中国雲南省産薬用キノコ類における人工(Cs)と天然(K)の放射能と総カリウム
Artificial (Cs) and natural (K) radioactivity and total potassium in medicinal fungi from Yunnan in China.
PMID: 32192356 DOI: 10.1080/10256016.2020.1741574.
抄録
中国雲南省産の薬用キノコ31種を対象に、Csの放射能汚染とKおよび総Kの発生を並行して評価した。本研究では、これまでに研究されていない種を選択した。本研究で得られた薬用キノコ類のCsの活性濃度は低かった。その最大値は、キャップで54±4 Bq kgの乾燥バイオマス(db)であった。 活性濃度が比較的高いキノコは、非ポリポア種であったが、属の一部の種では、900±240から1400±340 Bq kg dbの範囲であった。本研究で得られた真菌類中の全K濃度は、2.9±6.5 g kg dbから110±6 g kg dbの範囲であった。研究対象となった菌種は、一般的な木材腐朽性ポリポア真菌だけでなく、中国の漢方薬に含まれる陸生菌も含まれており、Csの汚染が少なく、抽出物や煎じ薬に含まれる溶出性Kの優良な供給源となる可能性があると考えられます。
Evaluated has been radioactive contamination with Cs in parallel to occurrence of K and total K in 31 species of medicinal mushrooms from Yunnan, China. We chose species that were not previously studied. The activity concentrations of Cs in the medicinal fungi in this study were low. The maximum values were 54 ± 4 Bq kg dry biomass (db) in caps and 48 ± 5 Bq kg db in stipes of saprotrophic fungus from the family of . Mushrooms with relatively higher activity concentrations of K were among the non-polypore species but certain species from the genus such as , , and showed K in the higher range of 900 ± 240 to 1400 ± 340 Bq kg db. The concentrations of total K in the fungal materials in this study were in the range from 2.9 ± 6.5 g kg db in to 110 ± 6 g kg db in . The species studied, which represented both some popular wood-decaying polypore fungi but also terrestrial forms from the herbal medicine of China, can be considered as little contaminated with Cs and potentially good source of leachable K in extract and decoction or as a powdered form in capsules.