Title Gram 음성세균에 의한 aroclor 분해에 미치는 환경요소의 영향
Author 김치경 · 김문식
Address 충북대학교 자연과학대학 미생물학과
Bibliography Korean Journal of Microbiology, 28(2),145-150, 1990
DOI
Key Words Biodegradation of Aroclors, Effects of environmental factor, Gram-negative bacteria
Abstract The effects of environmental factors on degradation of Aroclor 1242 were investigated with four Gram-negative bacterial isolates. Their biodegradabilities of the Aroclor were well correlated to their growth rates on the Aroclor added as a sole carbon and energy source. The optimum concentration of the Aroclor for biodegradation of the substrate in MM2 medium was 0.5mg/ml in HK-100, HK-123, and MS-1003 strains, but 1 mg/ml in DJ-26 strain. The optimum temperature and pH were 30℃ and 7.0, respectively, for all the strains. On the basis of the results which the strain of DJ-26 showed the highest degradability of the Aroclor as well as the highest growth rate under the optimum environmental conditions, the bacterial isolate identified as Pseudomonas sp. was found to be a strain usable for treatment of the toxic and recalcitrant chemical pollutants, such as polychlorinated aromatic hydrocarbons.
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