The invention relates to a method for preparing a functional Chinese chestnut drink, and relates to the technical field of
food drink processing preparation methods. The method comprises the followingsteps: peeling washed Chinese chestnuts to obtain Chinese chestnut kernels;
grinding and homogenizing the Chinese chestnut kernels, adding
calcium ions into the Chinese chestnut kernels, deodorizingand sterilizing the mixture; regulating the ground Chinese chestnut kernels to a high temperature, adding
calcium chloride into the mixture, adding high temperature resistant alpha-
amylase, and performing sufficient enzymolysis on the feed liquid; adding glucoamylase into the feed liquid, and performing sufficient enzymolysis on the feed liquid; regulating the feed liquid to the
protease optimal
reaction temperature and pH, adding
protease into the feed liquid, and performing sufficient enzymolysis on the feed liquid; performing
enzyme deactivation treatment on the product after
protein enzymolysis, and performing filtering after
enzyme deactivation treatment to obtain the product. According to the method, Chinese chestnut
starch has relatively high content, and has high
hydrolysis degreewhen being hydrolyzed with the high temperature resistant alpha-
amylase and glucoamylase, but
hydrolysis of
protein cannot be obstructed, which means that the
protein in Chinese chestnuts can by hydrolyzed with
protease with high efficiency, and the content of small peptides having the number of
amino acid at 2-10 is relatively high.