Read/Search this Article
Abstract
食品添加物DHA-Sの, E. coliおよびS. aureusに対する静菌的効果について検討した。また培養ヒトFL-細胞の増殖に及ぼす影響を検討した。DHA-Sの作用濃度として, 0.05%および1%を設定した。1.細菌に対する静菌効果は, 1%においては完全に増殖を抑制したが, 0.05%においては極く僅かにその増殖を抑制した。但し, S. aureusに対しては, 24hrを経過した時点では静菌的効果は認められなかった。2. FL-細胞に対しては, 1%濃度においては作用後5日目において著しく増殖を阻害した。0.05%濃度においては, 増殖抑制効果は認められなかった。3.電子顕微鏡によってDHA-SのFL-細胞に対する形態学的影響を観察したが, 1%濃度においては, 退化的な細胞変性を来たし, 遂には細胞は破壊された。
The toxic effects on bacteria (E. coli and S. aureus) and cultured human FL-cells of sodium dehydroacetate (DHA-S), a food preservative used in Japan for cheese, butter, and margarine, were studied. 1. DHA-S in a concentration of 1% markedly inhibited the growth of both bacterial strains after 24hr in culture. In a concentration of 0.05%, the slightly depressed growth of both strains was observed after 6hr in culture, but no significant effect on S. aureus was observed after 24hr. 2. The growth of cultured FL-cells treated with 1% DHA-S for 5min was depressed to about 5% of control at 5days after treatment. Treatment with 0.05% DHA-S had no detectable effect on the growth of FL-cells. 3. The morphologic effects of 1% DHA-S on Fl-cells were degenerative changes such as swelling of mitochondrion and fragmentations of nuclear envelope and plasma membrane.
Journal
- The scientific reports of the Kyoto Prefectural University. Natural science and living science [List of Volumes]
-
The scientific reports of the Kyoto Prefectural University. Natural science and living science 30, 45-51, 1979-12-20 [Table of Contents]
Kyoto Prefectural University
Share