Method for preparing cerealose or maltose syrup with crushed rice enzyme method

The invention discloses a method for preparing cerealose or maltose syrup with a crushed rice enzyme method, comprising the following steps: adding water in crushed rice for washing and immersing, carrying out pulp refining, regulating the pH value of the slurry, adding thermostable alfa-amylase to carry out two times continuous injection liquefaction, keeping warm to obtain the emulsion; adjusting the temperature of the emulsion to 55-60 DEG C, regulating the pH value to 5.0-5.6, adding beta-amylase to carry out saccharification to obtain a sacchariferous liquor with the DE value of more than 40 and the maltose content of more than 40% even 50%, and processing the sacchariferous liquor to obtain a maltose syrup product; or after adjusting the temperature of the emulsion to 55-60 DEG C, regulating the pH value to 5.2-5.7, adding crushed malt with stirring to carry out saccharification until the DE value of the material exceeds 40%, and filtering and condensing the sacchariferous liquor to obtain a cerealose product. The prepared products can be edible directly, and can be used as raw material for processing cake, candy and other Chinese traditional food and as carbon source of a microbe medium.