Abstract
Abstract Three biphenyl-degrading microorganisms were isolated from polluted soil samples in Sasang-gu, Busan. Among them, isolate DS-94 showing the strong degrading activity was selected. The morphological, physiological, and biochemical characteristics of DS-94 were investigated by API 20NE and other tests. This bacterium was identified as the genus Pseudomonas by 16S rDNA sequencing and designated as Pseudomonas sp. DS-94. The optimum temperature and pH for the growth of Pseudomonas sp. DS-94 were 25 ℃ and pH 7.0, respectively. This isolate could utilize biphenyl as sole source of carbon and energy. Biphenyl-degrading efficiency of this isolate was measured by HPLC analysis. As a result of biological biphenyl-degradation at high biphenyl concentration (500 mg/L), biphenyl-removal efficiency by this isolate was 73.5% for 7 days. Key Words :Biphenyl-degrading activity, Contaminated soil, Pseudomonas sp. DS-94 1. 서 론 1) 산업화에 의해 토양이 환경오염에 노출되면 자연 상태에서 스스로 정화하는데 수십 년이 걸린다. 특히 biphenyl은 콜타르(coal tar)와 원유 및 천연가스의 구성성분으로서 polychlorinated biphenyl (PCB)의 유기합성에 널리 사용되어져 왔으며(Moody 등, 2002), 환경 오염물질로서 전 세계에 널리 퍼져있는 실정이다. 최근에 biphenyl의 사용량이 감소되었다고 하지
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
