지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제22권 제5호
- 발행연도
- 2012.1
- 수록면
- 690 - 698 (9page)
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초록· 키워드
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Cr-B2, a Gram-negative hexavalent chromium [Cr(VI)]reducing bacteria, was isolated from the aerator water of an activated sludge process in the wastewater treatment facility of a dye and pigment based chemical industry. Cr-B2 exhibited a resistance for 1,100 mg/l Cr(VI) and,similarly, resistance against other heavy metal ions such as Ni2+ (800 mg/l), Cu2+ (600 mg/l), Pb2+ (1,100 mg/l), Cd2+(350 mg/l), Zn2+ (700 mg/l), and Fe3+ (1,000 mg/l), and against selected antibiotics. Cr-B2 was observed to efficiently reduce 200 mg/l Cr(VI) completely in both nutrient and LB media, and could convert Cr(VI) to Cr(III) aerobically. Cr(VI) reduction kinetics followed allosteric enzyme kinetics. The Km values were found to be 43.11 mg/l for nutrient media and 38.05 mg/l for LB media. Vmax values of 13.17 mg/l/h and 12.53 mg/l/h were obtained for nutrient media and LB media, respectively,and the cooperativity coefficients (n) were found to be 8.47and 3.49, respectively, indicating positive cooperativity in both cases. SEM analysis showed the formation of wrinkles and depressions in the cells when exposed to 800 mg/l Cr(VI) concentration. The organism was seen to exhibit pleomorphic behavior. Cr-B2 was identified on the basis of morphological, biochemical, and partial 16S rRNA gene sequencing chracterizations and found to be Acinetobacter sp.
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참고문헌 (24)
참고문헌 신청
Abboud, R. / 2005 / Low temperature growth of Shewanella oneidensis MR-1 / Appl. Environ. Microbiol 71 : 811 ~ 816
American Public Health Association (APHA) / 1998 / Standard Methods for Examination of Water and Wastewater, 20th Ed / American Public Health Association, American Water Works Associatio
Bergogne-Berezin, E. / 1996 / Acinetobacter spp. as nosocomial pathogens: Microbiological, clinical, and epidemiological features / Clin. Microbiol. Rev 9 : 148 ~ 165
Bolan, N. S. / 2003 / Reduction and phytoavailability of Cr(VI) as influenced by organic manure compost / J. Environ. Qual 32 : 120 ~ 128
Bopp, L. H. / 1988 / Chromate resistance and reduction in Pseudomonas fluorescens strain LB300 / Arch. Microbiol. 150: 426-431 150 : 426 ~ 431
American Public Health Association (APHA) / 1998 / Standard Methods for Examination of Water and Wastewater, 20th Ed / American Public Health Association, American Water Works Associatio
Bergogne-Berezin, E. / 1996 / Acinetobacter spp. as nosocomial pathogens: Microbiological, clinical, and epidemiological features / Clin. Microbiol. Rev 9 : 148 ~ 165
Bolan, N. S. / 2003 / Reduction and phytoavailability of Cr(VI) as influenced by organic manure compost / J. Environ. Qual 32 : 120 ~ 128
Bopp, L. H. / 1988 / Chromate resistance and reduction in Pseudomonas fluorescens strain LB300 / Arch. Microbiol. 150: 426-431 150 : 426 ~ 431
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