Structural determination and chemical esterification of the sophorolipids produced by Candida bombicola grown on glucose and α-linolenic acid.

The extracellular surface-active glycolipids produced by the yeast, Candida bombicola when grown on glucose and α-linolenic acid, were analyzed by HPLC with electro-spray ionization (ESI-MS) and collision-induced dissociation mass spectrometry. The analysis confirmed that the sophorolipid (SL) mixture contained three different forms of C18:3 SL molecules: free acid, lactone and a diacetylated lactone, which has not been reported previously. Also a minor amount of diacetylated lactone form of C18:1 SL was detected. Further, the SL mixture was subjected to chemical esterification reaction with sodium methoxide. The reaction product was analyzed with ESI-MS and confirmed to be the single homogenous esterified product containing C18:3 moieties in its fatty acid chain.

Citation

Reetika Gupta, Asmita A Prabhune. Structural determination and chemical esterification of the sophorolipids produced by Candida bombicola grown on glucose and α-linolenic acid. Biotechnology letters. 2012 Apr;34(4):701-7

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PMID: 22167634

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