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- W307242006 abstract "우리나라에서 유일하게 사용되고 있는 유기염소계 살충제 endosulfan을 미생물학적 방법으로 분해하기 위하여 총 182점의 토양, 퇴비 및 액상의 미생물 시료를 접종원으로 실시한 endosulfan 집식(enrichment) 실험으로부터 endosulfan을 endosulfan diol 형태로 경유하여 분해하는 균주를 선발하고 그 이름을 Bacillus sp. E64-2로 명명하였다. 분리균주는 7일만에 배지에 함유된 10 mg/L 농도의 endosulfan을 99% 이상 분해하였다. 또한 분리균주 Bacillus sp. E64-2의 조효소액은 endosulfan을 endosulfan diol로 전환하는 활성을 가지고 있었으며 균주 자체는 생육 중에 배지의 pH를 배양 7일 만에 pH 7.0에서 pH 8.4로 올릴 수 있었다. 이러한 효소활성과 pH 증가 능력은 분리균주 E64-2에 의한 endosulfan 분해의 주된 작용 인자인 것으로 판단되며 이 균주는 효소에 의한 분해작용과 pH 상승작용을 통하여 토양에 잔류는 난분해성 물질인 endosulfan을 bioremediation하기 위한 연구의 기초 균주로서의 가치가있을 것으로 판단된다. A bacterium, which was named to be Bacillus sp. E64-2, capable of degrading endosulfan was isolated from the environmental sample using enrichment culture technique. The Bacillus sp. E64-2 was able to degrade 99% of 10 mg/L endosulfan in the culture media within 7 days at <TEX>$30^{circ}C$</TEX>. Endosulfan diol was the only intermediate by the endosulfan degrading bacterial culture and the pH value of the culture media was significantly increased to pH 8.4 from pH 7.0 after 7 days of incubation. When the endosulfan and the crude extract of the strain were incubated, endosulfan diol was a major metabolite. Both the enzymatic reaction and the pH-increasing effect contribute to the degradation of endosulfan by the bacterial culture." @default.
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- W307242006 date "2008-09-30" @default.
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- W307242006 title "Isolation of endosulfan degrading bacteria and their degradation characteristics" @default.
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- W307242006 doi "https://doi.org/10.5338/kjea.2008.27.3.292" @default.
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