Hard type ABS 分解菌의 分離 同定 및 生理化學的 硏究 = Isolation, identification and physiological study of the strain to degrade hard type ABS

다국어 초록 (Multilingual Abstract)

A microorganism to enhance the biodegradability of hard type ABS of commercial synthetic detergents was isolated from the sewage sludge of Apt. areas and identified as Klebsiella pneumoniae.
In the basic mediums to grade the ABS concentration, growth of the selected strain was inhibited above ABS 2,000ppm and degradability of hard type ABS was higher as the start concentration was lower. When the start concentration of ABS was especially 40ppm, degradable rate leaded to about 70% within 15 hr culture.
PH range for the culture of the selected strain was between 5 and 10.
Hg^++ ion of 11 metal ions was the most sensitive to the growth of the selected strain in the basic medium with ABS 400ppm; the minimum concentration of Hg^++ at complete growth inhibition was 10^-2mM.
Degradability of Na-DBS by the strain in shaking culture was higher than that in static culture until 3 day culture.
The degradable rate of Na-DBS by the selected strain was generally higher that of Na-SSE, and after 7 day culture the former was 81%, the latter 69%, respectively.
The selected strain cultured in the basic medium with Na-DBS 5,000ppm did not show its nucleus and black spots regarded as condensation of nucleus near the cell wall were formed. And also the forms of cell wall and cell division were not abnormal.