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Pseudomonas sp. BCNU171의 Phenol 분해 특성
주우홍,최승태,정영기 한국생명과학회 2001 한국생명과학회 학술발표회 Vol.31 No.-
The optimal conditions for degrading phenol of Pseudomonas BCNU171 were investigated. It was verified that 90% of phenol was degraded when this strain was cultivated in the medium added 500ppm phenol, and the growth of this strain affected over 500ppm resulted in insignificant growth of this strain on 3,000ppm of phenol. Moreover this strain having plasmid DNA had the tolerance to heavy metal (Cu, Zn, Ni, Pb). The optimal condition for cultivation is 30℃, 7 of pH and the modified colorimetric method was used for the assay of residual phenol.
Bacillus sp. TBM912가 생산하는 항균물질
주우홍,한수지,최용락,정영기 한국생명과학회 2004 생명과학회지 Vol.14 No.1
A continuous enrichment culture procedure was used to isolate bacteria from various soil sources capable of suppressing large patch disease of turfgrass. Six isolates consistently suppressed large patch in turfgrass, and ranged in the spectrum of extracellular enzymes that they expressed. The best disease- suppressing isolate, TBM912, expressed protease, CMCase, and pectinase activity and inhibited the growth of Rhizectonin solani and Betrytis cinerea in vitro. Here we show that this strain also produces an antibiotic that was identified by TLC, SDS-PACE and HPLC analysis as lipopeptide.
Micrococcus sp. BCNU 121균주의 toluene과 열에 대한 교차내성
주우홍,한수지,최용락,정영기 한국생명과학회 2004 생명과학회지 Vol.14 No.1
Toluene tolerance and therrnotolerance in Crampositive organic solvent resistant bacterium Micrococcus sp. BCNU 121 has been studied. Exposure to a sub- lethal temperature or a sub-lethal concentration of toluene conferred protection to subsequent challenges with a killing temperature or a lethal concentration of toluene, respectively. Pretreatment of Micrococcus sp. BCNU 121 with sub-lethal concentrations of toluene induced adaptative protection against heat shock. Moreover, temperature-adaptative cells also showed cross-resistance to lethal doses of toluene. These data suggested a cross-regulation between toluene tolerance and heat shock response.