微生物學(xué)通報 MAY 20,2010,37(5):645～650
喹啉廢水反硝化反應(yīng)器中優(yōu)勢菌的代謝功能分析
仲匯慧 張曉君* 岳思青 袁飛 王凌華 趙立平
(上海交通大學(xué)生命科學(xué)技術(shù)學(xué)院 教育部微生物代謝重點實驗室 上海 200240)
摘 要: 采用純培養(yǎng)技術(shù)對一個降解喹啉的反硝化反應(yīng)器篩選到的26株優(yōu)勢菌株進(jìn)行反硝化能力以及好氧降解喹啉能力研究, 其中的反硝化菌還測定了反硝化條件下的喹啉降解能力,。結(jié)果發(fā)現(xiàn)Bacillus,、Staphylococcus、Pseudomonas、Brucella,、Delftia等5個屬的10株菌具有反硝化能力, Rhodococcus屬的9株細(xì)菌能夠好氧降解喹啉, 揭示了反硝化喹啉降解反應(yīng)器中主要細(xì)菌類型的代謝特性, 發(fā)現(xiàn)在缺氧反硝化反應(yīng)器中存在多樣的代謝類型的細(xì)菌。
關(guān)鍵詞: 喹啉, 反硝化, 降解率, 優(yōu)勢細(xì)菌, 群落
Analysis for Metabolic Activity of Predominant Bacterial Isolates in a Lab-scale Denitrifying Bioreactor for Quinoline-degradation
ZHONG Hui-Hui ZHANG Xiao-Jun* YUE Si-Qing YUAN Fei WANG Ling-Hua ZHAO Li-Ping
(Key Laboratory of Microbial Metabolism, Ministry of Education, College of Life Science and Biotechnology,
Shanghai Jiao Tong University, Shanghai 200240, China)
Abstract: Using the pure culture technology, we analyzed 26 predominant bacterial strains isolated from a denitrifying quinoline-degrading bioreactor. The capacity of denitrification and aerobic degradation for qui-noline of these strains was determined. Then the ability of denitrifying degradation of quinoline by selected denitrifying strains was measured. The results showed that 10 strains of isolates, which belong to Bacillus, Staphylococcus, Pseudomonas, Brucella and Delftia, were denitrifying bacteria. Whereas, 9 strains of iso-lates belonging to Rhodococcus had the ability of quinoline degradation under aerobic condition. This work described the metabolism function of the major predominant bacteria of microbial community in a quinoline degrading bioreactor. Diverse bacteria, in terms of metabolism, existed in the anoxic denitrifying bioreactor.
Keywords: Quinoline, Denitrification, Degrading efficiency, Predominant bacteria, Community
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