Process for producing acidic xylooligosaccharide and acidic xylooligosaccharide

摘要

The present invention provides a reduced-cost method for producing an acidic xylooligosaccharide, the method including a depolymerization step of depolymerizing a plant-derived raw material and a deacetylation step of adding a base to a solution of the product of the depolymerization step to achieve a pH of 11 or higher. The present invention further provides an acidic xylooligosaccharide having an acetyl group content of 0 to 5.0 mass%. The acidic xylooligosaccharide of the present invention, which has an acetyl group content of 0 to 5.0 mass%, can be used as a starting material in a production method to thereby obtain pentosan polysulfate with a high yield.