Extracellular Accumulation of the Polyol Lipids, 3, 5-Dihydroxydecanoyl and 5-Hydroxy-2-decenoyl Esters of Arabitol and Mannitol, by Aureobasidium sp

Abstract

Many isolated strains of Aureobasidium sp. were found to produce extracellular lipids as heavy oils in culture media containing no CaCO₃ as a neutralizing agent. The lipids (35g) were recovered from the culture broth (1 liter) of a light-colored mutant of Aureobasidium sp. A-2 and proved to be a mixture of fatty acid esters of arabitol and mannitol. The two main components of the lipophilic moiety of the lipids proved to be 3, 5-dihydroxydecanoic and 5-hydroxy-2-decenoic acids by the identification of their lactones, (+)-3-hydroxydecan-5-olide and (R)-(-)-2-decen-5-olide, that is, R-(-)-massoilactone, respectively.