Fatty acid selectivity of lipases: Erucic acid from rapeseed oil |
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Authors: | Philip E. Sonnet Thomas A. Foglia Stephen H. Feairheller |
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Affiliation: | (1) U.S. Department of Agriculture, ARS, Eastern Regional Research Center, 19118 Philadelphia, PA |
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Abstract: | The fatty acid selectivity of several commercial lipases was evaluated in the hydrolysis of high-erucic acid rapeseed oil (HEARO). The lipase ofPseudomonas cepacia catalyzed virtually complete hydrolysis of the oil (94–97%), while that ofGeotrichum candidum discriminated strongly against erucic acid, especially in esterification. A two-step process is suggested for obtaining a highly enriched erucic acid in which theG. candidum lipase is employed to selectively esterify the fatty acid residues of unsaturated C-18, and shorter chain acids, from a mixture of HEARO fatty acids obtained from total hydrolysis of the oil withP. cepacia lipase. |
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Keywords: | Erucic acid fatty acid selectivity lipases |
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