E.i. Dupont De Nemours and Company

Dupont Industrial Biosciences Usa, LLC

Nutrition & Biosciences USA 4, Inc.

Thomas Scholz

Mark Scott Payne

Yefim Brun

Hongxian He

Jayme L Paullin

Rakesh Nambiar

T Joseph Dennes

Reaction solutions are disclosed herein comprising water, sucrose and a glucosyltransferase enzyme that synthesizes poly alpha-1,3-glucan. The glucosyltransferase enzyme can synthesize insoluble glucan polymer having at least 50% alpha-1,3 glycosidic linkages and a number average degree of polymerization of at least 100. Further disclosed are methods of using such glucosyltransferase enzymes to produce insoluble poly alpha-1,3-glucan.

Glucosyltransferase enzymes for production of glucan polymers

Compositions are disclosed herein comprising poly alpha-1,3-1,6-glucan with a weight average degree of polymerization (DP) of at least 1000. This glucan polymer comprises at least 30% alpha-1,3 linkages and at least 30% alpha-1,6 linkages. Further disclosed are glucosyltransferase enzymes that synthesize poly alpha-1,3-1,6-glucan. Ether derivatives of poly alpha-1,3-1,6-glucan and methods of using such derivatives as viscosity modifiers are also disclosed.

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Bear, DE, United States of America

Thomas Scholz