The main representatives of hemicellulose are xylans， usually decorated β-1，4-linked d-xylose polymers， which are hydrolyzed by xylanases. The efficient utilization and complete hydrolysis of xylans necessitate the understanding of the mode of action of xylan degrading enzymes. The glycoside hydrolase family 30 (GH30) xylanases comprise a less studied group of such enzymes， and differences regarding the substrate recognition have been reported between fungal and bacterial GH30 xylanases. Besides their role in the utilization of lignocellulosic biomass for bioenergy， such enzymes could be used for the tailored production of prebiotic xylooligosaccharides (XOS) due to their substrate specificity.
The main representatives of hemicellulose are xylans， usually decorated β-1，4-linked d-xylose polymers， which are hydrolyzed by xylanases. The efficient utilization and complete hydrolysis of xylans necessitate the understanding of the mode of action of xylan degrading enzymes. The glycoside hydrolase family 30 (GH30) xylanases comprise a less studied group of such enzymes， and differences regarding the substrate recognition have been reported between fungal and bacterial GH30 xylanases. Besides their role in the utilization of lignocellulosic biomass for bioenergy， such enzymes could be used for the tailored production of prebiotic xylooligosaccharides (XOS) due to their substrate specificity.
