A hemicellulose (also known as polyose) is any of several heteropolymers (matrix polysaccharides), such as arabinoxylans, present along with cellulose in almost all plant cell walls. While cellulose is crystalline, strong, and resistant to hydrolysis, hemicellulose has a random, amorphous structure with little strength. It is easily hydrolyzed by ...
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http://en.wikipedia.org/wiki/Hemicellulose
any of a group of complex carbohydrates that, with other carbohydrates (e.g., pectins), surround the cellulose fibres of plant cells. The most ... [2 related articles]
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http://www.britannica.com/eb/a-z/h/35
<plant biology> Class of plant cell wall polysaccharide that cannot be extracted from the wall by hot water or chelating agents, but can be extracted by aqueous alkali. Includes xylan, glucuronoxylan, arabinoxylan, arabinogalactan II, glucomannan, xyloglucan and galactomannan. Part of the cell wall matrix. ... (18 Nov 1997) ...
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(hem″e-sel´u-lōs) a food fiber composed of various sugars, including xylose, glucose, and mannose. Hemicelluloses absorb and retain water in the gut but have little effect on stool size, and are largely digested by gastrointestinal bacteria.
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A group of polysaccharides resembling cellulose and occurring in the cell wall.
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Class of plant cell-wall polysaccharide that cannot be extracted from the wall by hot water or chelating agents, but can be extracted by aqueous alkali. Includes xylan, glucuronoxylan, arabinoxylan, arabinogalactan II, glucomannan, xyloglucan, and galactomannan. Part of the cell-wall matrix.
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Type: Term Pronunciation: hem′ē-sel′yū-lōs Definitions: 1. Plant cell-wall polysaccharides closely associated with cellulose, xylans, mannans, and galactans. Synonyms: cellulosan
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http://www.medilexicon.com/medicaldictionary.php?t=39929
Any of several polysaccharides found in plant cell walls that are more complex than a sugar and less complex than cellulose.
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