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Xanthan lyase
In enzymology, a xanthan lyase () is an enzyme that catalyzes the chemical reaction of cleaving the beta-D-mannosyl-beta-D-1,4-glucuronosyl bond on the polysaccharide xanthan. This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. Xanthan lyase was first identified and partially purified in 1987.
Xanthan is a polysaccharide secreted by several different bacterial taxa, such as the plant pathogen ''Xanthomonas campestris'', and it consists of a main linear chain based on cellulose with side chains attached to alternate glucosyl (glucose) residues. These side chains contain three monosaccharide residues. Xanthan lyase is produced by bacteria that degrade this polysaccharide, such as ''Bacillus'', ''Corynebacterium'' and ''Paenibacillus'' species.〔
==Industrial applications==
Xanthan is used in industry as a thickening agent in foods and drinks, as a stabilizing agent for foams, as a means of enhancing oil recovery and in the manufacture of good such as paints, cosmetics and explosives.〔 The use of xanthan lyase as a means of altering the physical properties of xanthans is an area of current research in biotechnology.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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