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化学学报
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化学学报 ›› 1988, Vol. 46 ›› Issue (3): 264-268. 上一篇    下一篇

研究论文

一种细菌糖脂的化学结构和物化性能

李祖义;徐永珍;李江云;孙常麒;许兴妹;施邑屏   

  1. 中国科学院上海有机化学研究所
  • 发布日期:1988-03-15

Chemical structure and physico-chemical properties of a bacterial glycolipid

LI ZUYI;XU YONGZHEN;LI JIANGYUN;SUN CHANGQI;XU XINGMEN;SHI YIPING   

  • Published:1988-03-15

PDF

897

被引次数

24

从土壤中分离得到一支假单孢菌, 当它生长在正烷烃或植物油中时分离得到两个具有表面活性的体外糖脂, 用柱层析及制备薄层层析得以纯化, 样品经负离子化学电离质谱、快原子轰击质谱以及^1H和^1^3C核磁共振谱鉴定其结构为鼠李糖脂1和2; 它们都具有降低表面张力、水与十六烷之间的界面张力, 以及良好的乳化性、发泡性及增溶性.

关键词: 质谱法, 界面, 乳化, 鼠李糖, 表面张力, 糖脂

A Pseudomonas sp. isolated from soil samples when grown on n-alkanes (C12-C18) or vegetable oil produced two extracellular glycolipids (I and II) with surfactant activity. After puritication by column and TLC, the structure of the two rhamnolipids were elucidated by means of mass spectroscopy and by 1H and 13C NMR spectroscopy. The rhamnolipids reduce remarkably the surface tension and the interfacial tension between aqueous solns. and n-hexadecane and show good emulsifying power, foaming ability, and solubilization effect.

Key words: MASS SPECTROGRAPHY, INTERFACES, EMULSIFICATION, RHAMNOSE, SURFACE TENSION, GLYCOLIPID

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