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首页> 外文期刊>Environmental Science and Pollution Research >Characterization of hydrocarbon-degrading and biosurfactant-producing Pseudomonas sp. P-1 strain as a potential tool for bioremediation of petroleum-contaminated soil
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Characterization of hydrocarbon-degrading and biosurfactant-producing Pseudomonas sp. P-1 strain as a potential tool for bioremediation of petroleum-contaminated soil

机译：表征烃降解和生产生物表面活性剂的假单胞菌。 P-1菌株可作为石油污染土壤生物修复的潜在工具

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摘要

The Pseudomonas sp. P-l strain, isolated from heavily petroleum hydrocarbon-contaminated soil, was investigated for its capability to degrade hydrocarbons and produce a biosurfactant. The strain degraded crude oil, fractions A5 and P3 of crude oil, and hexadecane (27, 39, 27 and 13 % of hydrocarbons added to culture medium were degraded, respectively) but had no ability to degrade phenanthrene. Additionally, the presence of gene-encoding enzymes responsible for the degradation of alkanes and naphthalene in the genome of the P-l strain was reported. Positive results of blood agar and methylene blue agar tests, as well as the presence of gene rhl, involved in the biosynthesis of rhamnolipid, confirmed the ability of P-l for synthesis of glycolipid biosurfactant.~1H and ~(13)C nuclear magnetic resonance, Fourier transform infrared spectrum and mass spectrum analyses indicated that the extracted biosurfactant was affiliated with rhamnolipid. The results of this study indicate that the P-l and/or biosurfactant produced by this strain have the potential to be used in bioremediation of hydrocarbon-contaminated soils.
机译：假单胞菌从严重石油烃污染的土壤中分离出的P-1菌株具有降解碳氢化合物和生产生物表面活性剂的能力。菌株降解的原油，原油的馏分A5和P3以及十六烷（分别添加到培养基中的碳氢化合物分别降解了27％，39％，27％和13％），但没有降解菲的能力。另外，据报道在P-1菌株的基因组中存在负责烷烃和萘降解的基因编码酶。血琼脂和亚甲基蓝琼脂测试的阳性结果以及鼠李糖脂生物合成中涉及的rhl基因的存在，证实了PI具有糖脂生物表面活性剂合成的能力。〜1H和〜（13）C核磁共振，傅里叶变换红外光谱和质谱分析表明，提取的生物表面活性剂与鼠李糖脂有关。该研究的结果表明，由该菌株产生的P-1和/或生物表面活性剂有潜力用于烃污染土壤的生物修复。

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