Abstract: α-Glucuronidase in microbial xylanolytic enzyme system is an important one necessary for complete hydrolysis of heteroxylan hemicellulose.Its biotechnological potentials in constructing strains of recombinant genes,which can completely degrade hemicellulose,and in exploiting hemicellulases'application are being paid attentions increasingly.Advances in studies on action mechanism,activity analysis,purification and gene cloning of α-glucuronidase are emphatically described.

Key words: xylan, α-glucuronidase, recombinant technology