A method is described for the isolation of wheat endosperm cell walls free from non-endospermic cell walls in a 70 % ethanol medium which prevents the loss of watersoluble polymeric components.

Water- and alkali-soluble arabinoxylans from isolated wheat endosperm cell walls were examined by ammonium sulphate fractionation and gel-exclusion chromatography.

Galactose-rich polysaccharides have been found in the finely divided material passing 75-JLm nylon-mesh sieves during the isolation of wheat endosperm cell walls in 70 % aqueous ethanol.