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Characterization of rhamnolipids produced by a Pseudomonas aeruginosa mutant strain grown on waste oils

机译:废油上生长的铜绿假单胞菌突变株产生鼠李糖脂的表征

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摘要

Pseudomonas aeruginosa EBN-8 mutant rhamnolipids produced on waste oils were investigated using normal-phase thin layer chromatography and fast atom bombardment mass spectrometry. Negative ion mode mass spectra yielded [M - H]~- ions and their fragment ions, which gave some indications on the sequence of rhamnolipid biosynthesis. Five rhamnolipid homologs [viz. RC_(10)C_(10) (m/z 503), RC_(12)C_(10) or RC_(10)C_(12) (531), RRC_(10)C_8 or RRC_8C_(10) (621), RRC_(10)C_(10) (649) and RRC_(12)C_(10) or RRC_(10)C_(12) (677)] were detected in four rhamnolipid combinations under the different carbon sources. The prevalence of rhamnolipids was confirmed by Fourier transform infrared and one-dimensional proton nuclear magnetic resonance. We also observed some correlations between the tensioactive characteristics and structural chemistry of the rhamnolipid surfactants.
机译:使用正相薄层色谱和快速原子轰击质谱法研究了在废油上产生的铜绿假单胞菌EBN-8突变鼠李糖脂。负离子模式质谱产生[M-H]〜-离子及其碎片离子,这为鼠李糖脂生物合成的序列提供了一些指示。五个鼠李糖脂同系物[vi。 RC_(10)C_(10)(m / z 503),RC_(12)C_(10)或RC_(10)C_(12)(531),RRC_(10)C_8或RRC_8C_(10)(621),在不同碳源下,在四种鼠李糖脂组合中检测到RRC_(10)C_(10)(649)和RRC_(12)C_(10)或RRC_(10)C_(12)(677)]。鼠李糖脂的患病率通过傅立叶变换红外和一维质子核磁共振证实。我们还观察到鼠李糖脂表面活性剂的张力活性特性与结构化学之间存在一些相关性。

著录项

  • 来源
    《Journal of Environmental Science and Health》 |2009年第13ptaa期|1367-1373|共7页
  • 作者单位

    National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan Department of Textile Engineering, University of Faisalabad, Faisalabad, Pakistan;

    National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan;

    School of Biomedical Sciences, Faculty of Life and Health Sciences, University of Ulster Coleraine, Northern Ireland, UK;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biosurfactant; mass spectrometry; NMR; pseudomonas aeruginosa; rhamnolipid;

    机译:生物表面活性剂质谱;NMR;铜绿假单胞菌;鼠李糖脂;

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