Linkage of p-coumaroyl and feruloyl groups to cell-wall polysaccharides of barley straw

Abstract Treatment of cell walls of barley straw with Oxyporus “cellulase” (a mixture of polysaccharide hydrolases) released compounds containing p -coumaroyl and feruloyl groups bound to carbohydrates, two of which were identified as O -[5- O -( trans-p -coumaroyl)-α- l -arabinofuranosyl]-(1→3)- O -β- d -xylopyranosyl-(1→4)- d -xylopyranose (PAXX) and O -[5- O -( trans -feruloyl)-α- l -arabinofuranosyl]-(1→3)- O -β- d -xylopyranosyl-(1→4)- d -xylopyranose (FAXX).