Page Banner

United States Department of Agriculture

Agricultural Research Service

Research Project: NOVEL TECHNOLOGIES FOR PRODUCING RENEWABLE CHEMICALS AND POLYMERS FROM CARBOHYDRATES DERIVED FROM AGRICULTURAL FEEDSTOCKS

Location: Renewable Product Technology Research Unit

Title: Custom-tailored water-insoluble glucans from sucrose via glucansucrases

Authors
item COTE, GREGORY
item SKORY, CHRISTOPHER
item CORMIER, RYAN

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: August 14, 2014
Publication Date: N/A

Technical Abstract: Dextrans and related glucans produced from sucrose by lactic acid bacteria have been studied for many years and are used in numerous commercial applications and products. Most of these glucans are water-soluble, except for a few notable exceptions from cariogenic Streptococcus spp. and a very small number of Leuconostoc mesenteroides strains. The ability to produce water-insoluble glucans in situ may be of value in encapsulation technology and in the production of biocompatible films and fibers. There are several different ways in which these enzymes can be exploited to produce water-insoluble glucans with varying properties. We determined that modifying a single amino acid from a L. mesenteroides glucansucrase significantly altered the proportions of linkage types, with correlating changes in the physical properties of the polysaccharide. We will discuss the physical properties of these novel polymers and their potential applications in agriculture, medicine, and the petroleum industry.

Last Modified: 9/10/2014
Footer Content Back to Top of Page