高度六価クロム耐性細菌の分離とその性質

概要

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Two bacterial strains(strains BS and B1)extremely resistant to potassium cromate were isolated from a chromium-waste-storing bottle of our laboratory. The strain BS, which was identified as Alcaligens sp., grew well in the presence of 10% potassium chromate. The strain B1,which was identified as Flavobacterium sp., was able to grow in the present of 20% potassium chromate. No enzyme activity reducing hexavalent chromium could be found in the strains BS and B1. Chromium was noto detectable from the strain B1 cells cultivated in a medium containing 0.01% potassium chromate. The strain B1 was less resistant to sodium chromate in the presence of 2,4-dinitrophenol. These results suggested that a membrane barrier to the permeation of chromium may be responsible for the chromium resistance of the strain B1.
社団法人日本生物工学会の論文
1988-03-25