The invention discloses a biological sugaring process by using
wheat starch, which comprises the following steps of: (1) size mixing: taking
wheat starch milk, adding a
sodium carbonate aqueous solution with a certain concentration for regulating pH, adding high-temperature resistant alpha-
amylase, hemicellulase and
xylanase, and uniformly stirring; (2) jetting and
liquefaction: carrying out jetting and
liquefaction on the
wheat starch milk obtained in the step (1), carrying out
flash evaporation and temperature reduction, maintaining temperature till completely liquefying, carrying out vacuum
flash evaporation and temperature reduction, and separating; (3) saccharification: regulating the pH of
emulsion obtained in the step (2), adding one of or a mixture of more than two of saccharifying
enzyme, pentosanase and
xylanase, as well as proteolytic
enzyme, uniformly stirring, saccharifying, reducing temperature, adding hemicellulase,
cellulase and lecithinase, stirring, saccharifying, rising temperature and inactivating
enzyme; and (4)
filtration. According to the biological sugaring process, the quality of the
sugar solution is effectively improved; the conversion rate of the pulverized
sugar reaches 106% to 107% (in DS (
degree of substitution)); and the DE (
dextrose equivalent) value can reach 95% to 98%.