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US 2013/0157316 A1Published application
Increased poly (alpha 1,3 glucan) yield using boric acid
AssigneeE. I. Du Pont de Nemours and Company
InventorsPERRY G. CAIMI, Susan Marie Hennessey
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Abstract
A process for production of poly(α1,3 glucan) from a renewable feedstock, for applications in fibers, films, and pulps. The effect of addition of boric acid in increasing the yield of the desired end products, poly(α1,3 glucan) and fructose, and decreasing formation of the undesired by-product leucrose.
Claims19
1) A reaction solution for the synthesis of poly(α1,3 glucan) comprising:
- a) at least one gtf enzyme;
- b) boric acid;
- and
- c) sucrose,
- whereby poly(α1,3 glucan) is produced with a lower concentration of leucrose by-product than is produced in the absence of boric acid.
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16) A process for reducing the amount of byproduct leucrose formed during enzymatic synthesis of poly(α1,3 glucan) comprising:
- a) providing a reaction solution comprising:
- i) at least one gtf enzyme;
- ii) boric acid;
- and
- iii) sucrose;
- wherein the sucrose is converted to poly(α1,3 glucan) and fructose and wherein the amount of leucrose produced in the conversion is less than 35% of the sucrose consumed.
3 more elements
Dependencies are inferred from the claim text.