Author(s): Cirigliano MC, Carman GM
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Abstract The inducible water-soluble bioemulsifier liposan (M. C. Cirigliano and G. M. Carman, Appl. Environ. Microbiol. 48:747-750, 1984) was purified from the yeast Candida lipolytica. The purification procedure included repeated solvent extractions of a concentrated culture filtrate and Affi-Gel concanavalin A affinity chromatography. The procedure yielded a preparation containing a major band (M(r) = 27,600) which stained for protein and carbohydrate upon polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate. Liposan is composed of approximately 83\% carbohydrate and 17\% protein. Acid and enzymatic digestions of the emulsifier revealed that the carbohydrate portion is a heteropolysaccharide consisting of glucose, galactose, galactosamine, and galacturonic acid. Liposan effected and stabilized oil-in-water emulsions with a variety of commercial vegetable oils. Emulsification and stabilization properties of liposan were compared to those of a number of commercial emulsifiers and stabilizers.
This article was published in Appl Environ Microbiol
and referenced in Journal of Petroleum & Environmental Biotechnology