Hemicellulase vs. Hemicellulose

Hemicellulase and Hemicellulose Definitions
Hemicellulase
(enzyme) Any enzyme that catalyzes the hydrolysis of hemicellulose
Hemicellulose
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.
Hemicellulose
(carbohydrate) A mixture of several plant polysaccharides, of smaller molecular weight than cellulose, that are soluble in dilute alkali; they are involved in the manufacture of paper, and are used in the production of furfural and ethanol.