hemicellulose


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Related to hemicellulose: pectin

hemicellulose

[¦he·mē′sel·yə‚lōs]
(biochemistry)
(C6H10O5)n A type of polysaccharide found in plant cell walls in association with cellulose and lignin; it is soluble in and extractable by dilute alkaline solutions. Also known as hexosan.
References in periodicals archive ?
Feed binders are broadly categorized based on their type into clay, plant gums & starches, lignosulphonates, hemicellulose, CMC & other hydrocolloids, gelatin, molasses, wheat gluten & middlings, and others that include PMC and urea formaldehyde.
2004) reported that 1-mm-sized maize cobs had higher CP and ether extract and lower cellulose, hemicellulose, ADF and NDF than 3 and 2 mm particle sized maize cobs.
1] were due to C-H stretching vibration of CH2 and CH groups in cellulose and hemicellulose.
When processing plant-based biomass, hemicellulose an abundant polysaccharide in plant cell walls must first be degraded to monomeric sugars that can be converted to high-value products such as biofuels.
After the elemental analysis, each pretreated sample was analyzed for composition, to determine the quantity of cellulose, hemicellulose and lignin content before and after the pretreatment.
Pretreatment processes all seek to dissociate the various components of biomass (cellulose, hemicellulose, and lignin) to hydrolyze complex sugars into simple sugars that are then fermented into molecules of industrial interest.
These constituents include the total extractives, cellulose, hemicellulose, lignin, and ash contents, and cold- and hot-water solubility.
Salapatas Professor of Materials Science and Engineering at MIT, has compiled data on the microstructures of a number of different plants, from apples and potatoes to willow and spruce trees, and has found that plants exhibit an enormous range of mechanical properties depending on the arrangement of the cell walk' four main building blocks: cellulose, hemicellulose, lignin, and pectin.
Other products are produced in this method, such as carbohydrates, hemicellulose, rosins, waxes, and alcohols.
His analyses, which at the time were apparently the most detailed of the hemicellulose mixture, pointed to the carbs' potential as a pet-food ingredient and paved the way for collaborative studies with a team led by George C.
Writing not only for professionals in the field of biomass and biofuels but also for academic audiences such as graduate and postgraduate students and researchers, Kubicek (biotechnology and microbiology, Vienna U of Technology) examines particulars of plant biomass such as structural, physical, and physicochemical properties of plant cell walls; plant biomass degradation by fungi; the enzymologies of cellulose, hemicellulose, and lignan degradation; catabolic pathways of soluble degradation products; enzyme formation regulation; the correlation between fungal secretory pathways and lignocellulose degradation; the production of cellulases and hemicellulases by fungi and the production of fermentable sugars from lignocelluloses; and lignocellulose biorefinery.
Carbon, hydrogen and oxygen form complex organic substances--cellulose, hemicellulose, lignin and the so-called extractive substances (resins, gums, fat, tannides, pectins, etc.