Study on saccharification of microcrystalline cellulose hydrolysis in supercritical water

By adding 1, 2, 3, 4, 5 g, respectively, of microcrystalline cellulose into 80 g of water in a 420°C of salt bath, the supercritical hydrolysis of cellulose is studied. The results show that with the increase of solid-liquid ratio the reductive sugar and hexose contents are increased, but the liquefaction rate declined. The maximal concentration of reductive sugar is 13.05 g/L, corresponding to a hexose sugar concentration of 7.12 g/L, liquefaction rate of 50.6%, hexose yield of 11.4%. The electron microscopy images show that on the surface of the hydrolytic residue there are a large number of holes with the formation of many spherical particles.