Production of glucan polymers from alternate sucrose sources

US10087479B2 · kind B2 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Dean M. Fake · Wilmington, US
• Susan Marie Hennessey · Avondale, US
• Brian D. Mather · San Diego, US
• Jennifer S. Ovental · Raleigh, US
• Wayne Atkinson · New Castle, US
• Tyler D. Pritchett · Bear, US
• Negash Adugna · Wilmington, US

Key dates

• Filing date: Jun 30, 2017
• Grant date: Oct 2, 2018
• Expiry date: Jun 30, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E50/10
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

Reaction solutions are disclosed herein comprising water, incompletely refined sucrose, and a glucosyltransferase enzyme that synthesizes insoluble poly alpha-1,3-glucan having at least 50% alpha-1,3 glycosidic linkages and a weight average degree of polymerization (DPw) of at least 100. The yield of poly alpha-1,3-glucan by a reaction solution herein is at least 7% of the weight of sucrose that was converted in the reaction solution. Further disclosed are methods of producing poly alpha-1,3-glucan using incompletely refined sucrose, and poly alpha-1,3-glucan produced by these methods.