For the structure elucidation of monoacylglycerols produced by Candida ishiwadae, the fatty acid moieties methyl oleate and linoleyl of the compounds (a & b) having Retention Factor (Rf) values 0.23 and 0.17 was determined by the methanolysis. From the combined data of 1H-NMR and mass spectral data, the compounds (a & b) were determined to be 1-oleylglycerol and 1-linoleylglycerol. Further confirmation was done from their molecular weights, 356 and
354 [17]. In the structure elucidation of sophorolipids produced by the Candida bombicola, hydroxyl-acid methyl esters were liberated by the methanolysis and were confirmed by GC-MS. The 16-hydroxydecanoic acid was confirmed by comparing the fragmentation pattern with the standard 16-hydroxyhexadecanoic acid purchased from Sigma Aldrich. Also, an isomer 15-hydroxyhexadecanoic acid was confirmed because of the availability of the same fragmentation pattern in the library