Continuous process for preparing decomposition of water-insoluble polymeric compound

The present invention is a water-insoluble high molecular weight compound such as water-insoluble protein and water-insoluble polysaccharides by a simple operation, and efficiently solubilized and low molecular weight, it is an object to produce new functional materials. According to the present invention, each of the following steps: after the heat treatment by contacting a solid acid catalyst to a water-insoluble polymer compound, recovering the supernatant, an aqueous medium in the solid acid catalyst after the supernatant recovered in addition to stirring, after the heat treatment, the step of further recovering the supernatant, the solid acid catalyst was washed with an aqueous medium, recovering the washing liquid, collected supernatant and washings were combined with non-solid acid catalyst obtaining a fraction of the adsorption, to elute the adsorbed component from the solid acid catalyst, and the eluate collected comprises obtaining a fraction adsorbed on the solid acid catalyst, the production of decomposition of water-insoluble polymeric compound a method is provided.