Dear Editor,Plant cell walls or lignocellulosics are considered an important renewable resource for the generation of bioenergy and other commodity chemicals.Wall materials are composed of cellulose,lignin,and various non-cellulosic polysaccharides.Most of the non-cellulosic polysaccharides contain O-acetyl substituents.The acetate residues are an impediment to biorefining as these substituents hinder the enzymatic saccharification of wall polymers and,upon processing,the released acetate represents a potent inhibitor of yeast fermentation of the sugars (Gille and Pauly,2012).