Study on the Enzyme-producing Conditions of a PCBs-degrading Halophilic Bacterium
Polychlorinated biphenyls (PCBs) are Persistent Organic Pollutants (POPs). This experiment screened a halophilic bacterium from the deep sea sediments, which could grow at the salinity of 15％, and designated as B2.6. The cells of this strain were rod shaped, Gram negative, motile, could grow in pH range of 5.0-9.0, and temperature range 10-37℃. Growth of this bacterium in the presence of PCBs, as the sole source of carbon and energy. The ions of I A, such as Na＋ and K＋ could enhance the activity of PCBs-degrading enzyme, while the transitional metal ions, such as Co2+, Mn2 +, Cu2＋, Fe2＋ and Fe3＋ may inhibit it in a certain degree. The optimal temperature, pH value and concentration of NaCI for the PCBs-degrading enzyme were 25-35-C, pH 6-8 and 50 g-Ll, respectively。
halophilic PCBs biodegradation enzyme
Zhe Zhao Lanying Zhang
Department of Environmental Science and Technology Northeastem University at Qinhuangdao Qinhuangdao Environment and Resource Institute Jilin University Changchun 130026, China
国际会议
昆明
英文
178-180
2010-10-17（万方平台首次上网日期，不代表论文的发表时间）