The hemicelluloses of the tubers ofAsparagus adscendens Roxb. have been isolated and chemically examined. They are composed of two fractions, A2 and B2 of Norris and Preece designation.
Both the fractions are constituted from the same sugars and uronic acid,viz., xylose, glucose and glucuronic acid but in different proportions. In hemicellulose A2 the ratio of these components is 2:1:1, while in B2 it is 1:1:2.