Journal
BIOTECHNOLOGY LETTERS
Volume 26, Issue 15, Pages 1241-1245Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/B:BILE.0000036605.80577.30
Keywords
biosurfactant; Candida bombicola; soy solubles
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Sophorolipids (SLs) were produced from Candida bombicola using soy molasses and oleic acid as co-substrates. The purified SLs were obtained at 21 g l(-1) and were 97% in lactone form. The major SL constituent (81% relative abundance) of the product mixture contains an oleoyl chain. The surface properties of the SLs obtained from the soy molasses/oleic acid fermentation had minimum surface-tension values of 37 mN m(-1) ( pH 6) and 38 mN m(-1) (pH 9), and critical micelle concentration values of 6 mg l(-1) (pH 6) and 13 mg l(-1) (pH 9).
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