Journal
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
Volume 82, Issue 9, Pages 619-623Publisher
WILEY
DOI: 10.1007/s11746-005-1119-9
Keywords
LA; dehydration; esterification; lipase; MAG; Penicillium camembertii.
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Production of MAG with CLA using Penicillium camembertii mono- and diacylglycerol lipase (referred to as lipase) was attempted for the purpose of expanding the application of CLA. The commercial product of CLA (referred to as FFA-CLA) is a FFA mixture containing almost equal amounts of 9cis, 11 trans (9c, 11t)-CLA and 10t, 12c-CLA. Esterification of FFA-CLA with glycerol without dehydration achieved 84% esterification but produced almost equal amounts of MAG and DAG. Esterification with dehydration not only achieved a high degree of esterification but also suppressed the formation of DAG. When a mixture of FFA-CLA/glycerol (1:2, mol/mol), 1% water, and 200 units/g-mixture of P. camembertii lipase was agitated at 30 degrees C for 72 h with dehydration at 5 mm Hg, the degree of esterification reached 95% and the contents of MAG and DAG were 90 and 6 wt%, respectively. This reaction system may be applied to the industrial production of MAG with unstable CLA.
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