| 摘要 |
<p>The method for producing a surfactin or a salt thereof according to the present invention comprises the steps of adding an organic solvent containing a branched alkyl alcohol to a culture fluid containing the surfactin or the salt thereof, or to a solution obtained by removing an insoluble component from the culture fluid, and extracting the surfactin or the salt thereof with the organic solvent,
wherein the surfactin or the salt thereof is represented by the formula (1) :
wherein * indicates an optically active Center; X is an amino acid selected from leucine, isoleucine and valine; R is a C 9-13 alkyl group or a C 9-13 branched alkyl group; and M is an alkali metal, an alkaline earth metal, an optionally-substituted amine or the like.</p> |
