| abstract |
PURPOSE: To obtain a biological surfactant derived from a microorganism and made adaptable to a living body and showing specific compatibility in the living body, by reacting an aqueous solution of a multivalent metal salt with a sodium salt of rhamnolipid A or B. n CONSTITUTION: Rhamnolipid is one kind of glycolipids and has such a structure that a hydrophilic group consists of a rhamnose residue and a carboxyl group, and an oleophilic group is composed of a two-chain alkyl group divided broadly into a decenoyl group and a structure wherein two hepthyl groups are branched from β-hydroxypropionyl propionate. A sodium salt of rhamnolipid A (general formula I, M is a multivalent metal ion) or B (general formula II) and a salt of a multivalent metal such as calcium is reacted with said sodium salt to obtain metal soap. This metal soap is suitable for stable solubilization or emulsification to water and an org. solvent and has safety and biodegradability and can be widely utilized in fields of cosmetics and drugs. n COPYRIGHT: (C)1989,JPO&Japio |