Journal
BIOTECHNOLOGY LETTERS
Volume 29, Issue 9, Pages 1341-1347Publisher
SPRINGER
DOI: 10.1007/s10529-007-9407-5
Keywords
biosurfactant; Candida bombicola; nitrogen source; soy solubles
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A simplified medium containing only soy molasses and oleic acid as ingredients was developed for the production of sophorolipids (SLs) from Candida bombicola. We achieved a product yield of 53 +/- 3 g of purified sophorolipids per liter of starting culture volume, which is 71 +/- 4% of the yield obtained with growth medium that also additionally contains the costly yeast extract and urea as nitrogen source. The large majority of the SL components existed in the lactone form (87%), and the predominant component is SL containing (omega-1)-hydroxyoleic acid as the lipid moiety. The study demonstrated for the first time the usefulness of the low-value soy molasses as a combined nitrogen- and carbon-source for SL production at a reduced cost.
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