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US 12,753,396 B2Granted
Carboxylic acid esters of xylitol and process for enzymatically preparing same
AssigneeEvonik Operations GmbH
InventorsStefan Julian Liebig, Jan Marian von Hof, Thomas Böhmer, Thomas Thomalla, Kathrin Daniela Brandt, Christian Hartung, Hans Henning Wenk, Maxim Yavorsky, Sunay Karacocuk
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Abstract
Xylitol carboxylates are products of interest in the food and cosmetics industries. A process can be used for the enzymatic preparation of xylitol carboxylates.
Claims20
A process for the enzymatic preparation of a xylitol carboxylate, comprising:
- A) providing xylitol and at least one acyl group donor,
- B) reacting the xylitol with the at least one acyl group donor in the presence of a lipase at a temperature of from 75° C. to 110° C., to give a xylitol carboxylate, wherein the reacting is carried out in the absence of solvent, and
- C) optionally, purifying the xylitol carboxylate,
- wherein in B), the xylitol and the at least one acyl group donor make up at least 95% by weight, based on an overall reaction mixture at the start of B),
- wherein the at least one acyl group donor comprises a fatty acid having 6 to 22 carbon atoms, and
- wherein the lipase is lipase A and/or B from Candida antarctica.
3 more elements
Dependencies are inferred from the claim text.