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hemicellulose
(redirected from hemicelluloses)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.
hemicellulose [¦he·mē′sel·yə‚lōs]
(biochemistry)
(C6H10O5)nA 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.


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This type of fiber includes mucilages, gums, hemicelluloses, and pectins, which are also found in a number of foods.
The carbon compounds found in fibrous bulk ingredients include cellulose, lignin, hemicelluloses and pentosans.
Hydroxyl groups that react with the reagent are those of lignin and hemicelluloses (amorphous material), whereas the hydroxyl groups of cellulose (crystalline material) are being closely packed with hydrogen bonds, prevent the diffusion of reagent and thus result in very low extents of reaction (79).
 
 
 
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