Method for producing acidic xylooligosaccharide and acidic xylooligosaccharide

摘要

As a production method in which the cost of acidic xylo-oligosaccharide is reduced according to the present invention, a step of depolymerizing a plant-derived raw material, and a deacetylation step of adding a product solution obtained in the above step to a pH of 11 or more by adding a base And an acidic xylo-oligosaccharide having an acetyl group content of 0 to 5.0% by mass. The polysulfate pentosan can be obtained in a high yield by the production method of the present invention using an acidic xylo-oligosaccharide having an acetyl group content of 0 to 5.0% by mass as a raw material.