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Related to hemicellulose: pectin
Any of several branched polysaccharides that are composed of a variety of different monosaccharides and form a matrix with cellulose and lignin or pectin in plant cell walls. It is produced commercially from corn fiber.
(Botany) any of a group of plant polysaccharides that occur chiefly in the cell wall
hem•i•cel•lu•lose(ˌhɛm ɪˈsɛl yəˌloʊs)
any of a group of polysaccharides, intermediate in complexity between sugar and cellulose, that hydrolyze to monosaccharides more readily than cellulose.