The invention discloses a production method for increasing a yield of
xylose, and relates to the technical field of functional
sugar production. The production method comprises the following steps of
raw material pretreatment,
hydrolysis, primary purification, primary concentration, glucose removal with
yeast, secondary purification, condensation
crystallization, and crystallized
xylose mother solution utilization. According to the production method, the active
yeast is added for removing glucose, so that the purity of the
xylose is improved; batch treatment is performed, so that the yield of the xylose in a first batch is increased; when a feed solution in a second batch is treated, a mother solution recycling method is adopted, so that the purity of the xylose keeps in a xylose
crystallization range; and partial xylose is extracted from a mother solution, so that a purpose of entirely increasing the yield of the xylose is achieved. The production method replaces a primary
ion exchange resin method with an
electrodialysis desalination method, so that pH (potential of
hydrogen) of a
sugar solution is effectively increased; and the
sugar solution suitable for removing the glucose with the
yeast can be obtained without value adjustment. The method is high-efficiency, energy-saving and convenient to operate, and effectively increases the yield of the xylose.