きのこへのγ腺照射 : (第1報) ヌクレオチドの変化と核酸分解酵素系の安定性

概要

論文の詳細を見る
Mushrooms (Psalliota bisporus) and Shii-take (Lentinus edodes) were inrradiated with r-rays of 5 to 50×10^5 rad, and changes of nucleic acid related substances were investigated by means of chromatography with a Dowex 1×8 column. ATP in mushrooms and Shii-take disappeared at a does of 5×10_6 rad, whereas ADP remained as much as the initial amounts (Figs. 1 and 2. Tables 1 and 2). Changes in the amounts of mononucleotides were negligible. Preliminary experiments were carried out on the extractability of nucleic acid related enzymes from mushrooms. Extracted enzyme solutions from mushrooms were subjected to γ-irradiation, as a result, their ribonuclease, phosphodiesterase and phosphomonoesterase activities remained moderate even at a high does of 5×10^6 rad (Figs. 3 and 4).It seems reasonable to consider that there is a possibility of the breakdown of nucleic acid related substances during the storage by the actions of the enzymes that have remained after the γ-irradiation.
社団法人日本生物工学会の論文
1970-05-25