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NMR and HPLC characterization of O-alkanoyl lactates prepared by lipase catalysis.

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Title NMR and HPLC characterization of O-alkanoyl lactates prepared by lipase catalysis.
 
Creator Kiran, K. R.
Divakar, S.
 
Subject 24 Organic Chemistry
 
Description Lactic acid esters of organic acids like lauroyl, palmitoyl and stearoyl lactic acids prepared by using lipases have been characterized by 1H an 13C NMR spectra. The reaction mixture indicates the presence of several species due to complex esterification equilibria. Crystalline lactic acid employed for reactions shows more lactylate content than the commercially available lactic acid. The -CH-O- region between 4.03 and 5.13 ppm gives quite a lot of information on the ester formation as this region contains signals from free lactic acid, hydroxyl terminal group of lactylates, carboxyl terminal group of lactylates and lactic acid and lactylate esters of organic acids employed. The ester yields detemined by HPLC and NMR are comparable and are less than those determined by titration method.
 
Date 2002
 
Type Article
NonPeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://ir.cftri.com/4708/1/Ind_J_of_Chem_B_41_8_1686-1693.pdf
Kiran, K. R. and Divakar, S. (2002) NMR and HPLC characterization of O-alkanoyl lactates prepared by lipase catalysis. Indian Journal of Chemistry, 41B (8). pp. 1686-1693.