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AssigneeUnilever Patent Holdings B.V.
InventorsRobert Roos, Jan Bakker
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The invention provides a process for the isolation of hydroxy fatty acid derivatives from Convolvulaceae plants like Ipomoea batatas and Ipomoea orizabensis by extracting parts of said plants like leaves, stems, seeds and in particular roots and tubers thereof, with an organic solvent, removing the solvent for at least the main part from the extract, dispersing the obtained residue into water, subjecting the obtained dispersion to a single hydrolysis step and recovering the released hydroxy fatty acids, like 11-hydroxy palmitic acid and 3,11-hydroxy myristic acid from the aqueous dispersion by means of an extraction agent. The obtained hydroxy fatty acid may be used in the synthesis of specific organic compounds like lactones or in the preparation of products having purgative properties and of thickeners for lubricating greases respectively.
In a process for the isolation of a hydroxy fatty acid or alkyl ester thereof from Convolvulaceae plants by extracting parts of said plants with an extraction agent and subsequently subjecting the extraction liquor to hydrolysis, the improvement which comprises:
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