Method for producing sugar fatty acid ester by transesterification reaction

Patent metadata

Field	Value
Publication number	US-11518778-B2
Application number	US-201917265666-A
Country	US
Kind code	B2
Filing date	Aug 9, 2019
Priority date	Aug 10, 2018
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A method for producing a sugar fatty acid ester characterized in that a fatty acid ester and a saccharide are subject to a transesterification reaction using a weakly basic ion exchanger having a pKb of 3 to 7 as a catalyst.

First claim

The invention claimed is:

1. A method for producing a sugar fatty acid ester, characterized in that a fatty acid ester and a saccharide are subjected to a transesterification reaction using a weakly basic solid catalyst,
comprising a step of adsorbing a saccharide onto a weakly basic solid catalyst (adsorption step) and a step of subjecting the saccharide and a fatty acid ester to a transesterification reaction to synthesize a sugar fatty acid ester (synthesis step), wherein the absorption step is conducted in advance of the esterification reaction (synthesis step) and
wherein the adsorption step is a step in which a solution containing a saccharide is supplied to a weakly basic solid catalyst, thereby adsorbing the saccharide onto the weakly basic solid catalyst.

2. The method for producing a sugar fatty acid ester according to claim 1 , wherein the weakly basic solid catalyst is a weakly basic anion exchanger.

3. The method for a sugar fatty acid ester according to claim 2 , wherein the weakly basic anion exchanger has a pK b of 3 to 7.

4. The method for producing a sugar fatty acid ester according to claim 2 , wherein the weakly basic anion exchanger is a porous-type weakly basic anion exchange resin.

5. The method for producing a sugar fatty acid ester according to claim 1 , wherein the synthesis step is a step in which a reaction liquid containing a fatty acid ester is supplied to the weakly basic solid catalyst having the saccharide adsorbed thereon in the adsorption step, thereby synthesizing a sugar fatty acid ester.

6. The method for producing a sugar fatty acid ester according to claim 5 , wherein the reaction liquid containing a fatty acid ester contains a saccharide.

7. The method for producing a sugar fatty acid ester according to claim 1 , wherein the fatty acid ester is an ester of a C 1-30 fatty acid and a C 1-8 lower alcohol.

8. The method for producing a sugar fatty acid ester according to claim 1 , wherein the saccharide is at least one member selected from the group consisting of monosaccharides, disaccharides, and polysaccharides.

9. The method for producing a sugar fatty acid ester according to claim 1 , wherein the fatty acid ester is methyl oleate, and the saccharide is sucrose.

Assignees

• Univ Tohoku

Inventors

• KITAKAWA Naomi
• SASAYAMA Tomone
• KANEZAWA Ayumu

Classifications

• C07H13/06 Primary

  Fatty acids · CPC title

• A61K47/26

  Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin · CPC title

• C07H1/00

  Processes for the preparation of sugar derivatives · CPC title

• C07B61/00

  Other general methods · CPC title