Production of sophorolipid biosurfactants by multiple species of the Starmerella (Candida) bombicola yeast clade

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Abstract

Sophorolipids are carbohydrate-based, amphiphilic biosurfactants that are of increasing interest for use in environmentally benign cleaning agents. Sophorolipid production was tested for 26 strains representing 19 species of the Starmerella yeast clade, including Starmerella bombicola and Candida apicola, which were previously reported to produce sophorolipids. Five of the 19 species tested showed significant production of sophorolipids: S. bombicola, C. apicola, Candida riodocensis, Candida stellata and a new species, Candida sp. NRRL Y-27208. A high-throughput matrix-assisted laser desorption/ionization-time of flight MS assay was developed that showed S. bombicola and C. apicola to produce a lactone form of sophorolipid, whereas C. riodocensis, C. stellata and Candida sp. NRRL Y-27208 produced predominantly free acid sophorolipids. Phylogenetic analysis of sequences for the D1/D2 domains of the nuclear large subunit rRNA gene placed all sophorolipid-producing species in the S. bombicola subclade of the Starmerella clade. © 2010 Federation of European Microbiological Societies.

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Kurtzman, C. P., Price, N. P. J., Ray, K. J., & Kuo, T. M. (2010). Production of sophorolipid biosurfactants by multiple species of the Starmerella (Candida) bombicola yeast clade. FEMS Microbiology Letters, 311(2), 140–146. https://doi.org/10.1111/j.1574-6968.2010.02082.x

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