文章基本信息

标题：食品添加物の放射線分解(第1報)水溶液中におけるソルビン酸の放射線分解と照射ソルビン酸水溶液の抗菌性について
本地全文：下载
作者：石関忠一 ; 城戸靖雅 ; 浦久保五郎等
期刊名称：Journal of Health Science
印刷版ISSN：1344-9702
电子版ISSN：1347-5207
出版年度：1972
卷号：18
期号：5
页码：337-341
DOI：10.1248/jhs1956.18.337
出版社：The Pharmaceutical Society of Japan
摘要：Aqueous solution of sorbic acid (0.32 mg %) was irradiated with ⁶⁰Co γ-ray (dose rate 2.48×10⁴ rad/hr) in doses ranging from 0 to to 2.175×10⁴ rad, and decomposition of the acid was examined by spectrophotometry. Absorbance at λ max 255 nm due to sorbic acid decreased with increasing radiation dose and the G (-sorbic acid) value was calculated from the decreasing rate of the absorbance to give 1.85. An aqueous solution of sorbic acid irradiated at the dose 7×10⁵-13×10⁵ rad showed a stronger antibacterial activity than non-irradiated solution against E. coli, in spite of the decrease of sorbic acid in the solution. Therefore, new antibacterial substance was assumed to have been produced in the solution by γ-ray irradiation. This irradiated solution also showed antibacterial activity against 5 other kinds of bacteria. It was also proved that the presence of O₂ gas might be essential for the production of the new antibacterial substnce by experiments on antibacterial activity of irradiated solutions sealed with or without O₂ gas.