title: Enzymatic esterification of free fatty acids in vegetable oils utilizing different immobilized lipases.
abstract: Different immobilized lipases were screened for their ability to esterify free fatty acids (FFA) with monoacylglycerol (MAG) as acyl-group acceptor. A lipase from Rhizomucor miehei (Lipozyme RMIM) was the most suitable for lipase-catalyzed de-acidification-a promising alternative to conventional neutralization. A reduction of the FFA content to 0.6 % (w/w) was achieved by applying a substrate with an initial FFA-content of 6 % (w/w), the reaction at 50 °C for 22 h as well as the stepwise addition of a quadruple stoichiometric amount of MAG.
authors.affiliation: Department of Process Engineering, Process Development for Plant Raw Materials, Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Str. 35, 85354, Freising, Germany, daniela.von.der.haar@ivv.fraunhofer.de.
authors.forename: Daniela
authors.initials: D
authors.lastname: von der Haar
authors.forename: Andreas
authors.initials: A
authors.lastname: Stäbler
authors.forename: Rolf
authors.initials: R
authors.lastname: Wichmann
authors.forename: Ute
authors.initials: U
authors.lastname: Schweiggert-Weisz
mesh_terms: D004800:Enzymes, Immobilized / Q000737:chemistry / Q000378:metabolism*; D005227:Fatty Acids / Q000737:chemistry* / Q000378:metabolism; D008049:Lipase / Q000737:chemistry / Q000378:metabolism*; D010938:Plant Oils / Q000737:chemistry* / Q000378:metabolism; D013696:Temperature
chemical_list: D004800:Enzymes, Immobilized; D005227:Fatty Acids; D010938:Plant Oils; D008049:Lipase