睾丸酮丛毛单胞菌对喹啉类化合物的降解

对喹啉、异喹啉、2-甲基喹啉、3-甲基喹啉、4-甲基喹啉和6-甲基喹啉在睾丸酮丝毛单胞菌(Comamonas testosteroni Q10)作用下的降解及底物之间的相互作用进行研究．结果表明，喹啉和3-甲基喹啉不仅能有效地被降解，而且细菌也有明显的生长，而其它化合物虽有部分降解但没有观察到细胞生长．底物初始浓度的增加对菌Q10有一定抑制作用．喹啉的存在对其它化合物的降解具有不同的促进效应，其中尤以6-甲基喹啉和4-甲基喹啉最为明显．能在较短时间内得到完全去除，而在各二元体系中喹啉的降解受到这些化合物的抑制作用．

BIODEGRADATION ABILITY OF QUINOLINE AND ITS DERIVATIVES BY COMAMONAS TESTOSTERONI Q10 AND THE SUBSTRATES INTERACTIONS

A bacterial strain Q 10 with the ability to degrade quinoline was isolated from activated sludge of a gas generating wastewater and identified as Comamonas testosteroni .This paper focused on the study of the biodegradation ability of quinoline,2 methylquinoline,3 methylquinoline, 4 me thylquinoline,6 methylquinoline,isoquinoline and the substrates interactions.The results showed that quinoline and 3 methylquinoline can be effectively removed and they can stimulate the growth of strain Q 10 simultaneously.However,no apparent cell growth was observed during other substrates degradation though they can partly be degraded.The increase of initial concentration of the substrates had inhibitory effect on the activity of strain Q 10 .The presence of quinoline can stimulate the degradation of other compounds to different degrees,in which the enhancement effects were significantly for the degradation of 6 methylquinoline and 4 methylquinoline and they can be completely removed in a short time.In all binary systems,however,the degradation of quinoline was inhibited.