Gordona sp. MS6 균주의 dibenzothiophene 탈황능에 미치는 분해산물의 영향 = Effect of Degradative Products on Dibenzothiophene Desulfurization Activity of Gordona sp. MS6

다국어 초록 (Multilingual Abstract)

Gordona sp. MS6, desulfurizing petroleum, can convert dibenzothiophene(DBT) to 2-hydroxybiphenyl(2-HBP) and sulfate. In this study, the effect of DBT degradation product on DBT desulfurization activity was investigated. When Na_2SO_4 and DBT were simultaneously added in the medium sulfur sources, specific growth rate of strain MS6 was doubled compared to not adding Na_2SO_4. But, sulfate inhibited DBT desulfurization rate, furthermore, when 0.05g/L Na_2SO_4 was supplied DBT desulfurization rate decreased down to 40%. When 2-HBP and its derivative, 2, 2´-dihydroxybiphenyl (DHBP) were not added, DBT desulfurization rate was 5.0 μmol·L^-1·h^-1. With the increase of 2-HBP and DHBP concentration, DBT desulfurization rate was decreased. No DBT desulfurization activity of Gordona sp. MS6 was observed when initial concentration was over 0.15 mM 2-HBP and 0.8 mM DHBP. [Gordona sp., Desulfurization, Dibenzothiophene, 2-Hydroxybiphenyl, Sulfate].