Hemicellulose

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[ Other Name ] Polyose
[ Appearance ] White Powder
[ Purity ] 99% min

[ Function ]
Some hemicelluloses often contain a small amount of other sugars, such as L-arabinose, D-glucose, D-galactose, D-mannose, D-glucuronic acid and D-galacturonic acid, etc., which are often grafted form branched chains. Hemicellulose is soluble in dilute alkali and can be separated from cellulose.

About Hemicellulose
Hemicellulose is a heteropolymer composed of several different types of monosaccharides, which are five- and six-carbon sugars, including xylose, arabinose, and galactose.
Hemicellulose widely exists in plants and mainly acts as a skeleton. When plants are vigorously active, such as when seeds germinate, they can also be hydrolyzed to form monosaccharides to supply the nutrients needed for plant growth.
Hemicellulose is a kind of heteropolysaccharide existing in the cell wall of plants. Hemicellulose can be extracted with dilute alkali solution. When hemicellulose is hydrolyzed with dilute acid, various hexose sugars, pentose sugars and uronic acids can be obtained. The composition of hemicellulose is relatively complex. Hemicellulose includes polysaccharides such as xyloglucan, glucuronoxylan, mannan and galactan, so hemicellulose is a type of heteropolysaccharide. The hemicellulose in barley grains is mainly a mixture of xylan and polyarabinose; the hemicellulose in konjac tubers is mainly polyglucomannose (Polyglucomannose has very high medicinal value and food value, and is harmful to the human body. It has a variety of health effects, and can be used to prevent constipation, lower blood sugar, lower blood fat, lose weight and fight cancer).
Hemicellulose is a heteropolysaccharide co-existing with cellulose in the cell walls of most plants, and it is abundantly present in the lignified parts of plants. Hemicellulose xylan, which accounts for 50% of the total in woody tissues, is bound to the surface of cellulose microfibrils and interconnects, and these fibers form a rigid network of interconnected cells.
Co-thermal hydrolysis of hemicellulose and strong acid is an industrial method for preparing furfural. It is hydrolyzed in dilute acid to obtain xylose, which is the main raw material for the preparation of xylitol.