Method for obtaining fatty acids from biomass by combined in/situ extraction, reaction and chromatography using compressed gases
AssigneeAxiva GmbH
InventorsThomas Kiy, Christoph Siffrin, Heinz Engelhardt, Dirk Fabritius
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Abstract
The invention relates to a method for obtaining fatty acid esters and fatty acids, preferably unsaturated fatty acid ethyl esters, from biological sources by continuous, combined in-situ extraction, reaction and chromatography. The invention is characterized in that simultaneously and in the same location, in the presence of a compressed gas and an 0.5-5 % stream of lower alcohols as modifiers and in the presence of an inert catalyst, the fatty acids are fully transesterified from their native fatty acid sources, which are selectively desorbed and eluated in the conditions specified above.
Claims9
A method for the preparation and selective isolation of fatty esters and/or fatty acids from a biological source comprising the steps of:
- (a) reacting said biological source with an inert catalyst using continuous in-situ extraction, reaction chromatography in the presence of a compressed gas stream and 0.5 to 5% volume of C1-C5 alcohol modifier;
- (b) subjecting said inert catalyst to said chromatography, wherein said inert catalyst has chromatographic retention and exclusively desorbs and elutes the reaction products;
- and
- (c) extracting said fatty esters or fatty acids from said desorbed and eluted reaction products.
Dependencies are inferred from the claim text.