The invention discloses soybean milk
powder and a preparation method thereof, salty soybean milk
powder prepared by using the soybean milk
powder, and salty soybean milk. The preparation method of thesoybean milk powder comprises: 1) immersing peeled soybeans in 25-35 DEG C water, soaking for 2-4 h, carrying out
wet grinding to obtain a
slurry, and separating the
slurry and the residue, wherein the temperature of the water for
grinding is 80-90 DEG C; 2) carrying out deodorization,
enzyme inactivation and sterilization, carrying out enzymolysis on the soybean milk supernatant for 0.5-1 h at atemperature of 40-55 DEG C, carrying out
centrifugation, and carrying out three-effect concentration on the separated soybean milk supernatant, wherein the first-effect concentration temperature is 60-75 DEG C, the
evaporation vacuum degree is 0.055-0.065 MPa, the second-effect concentration temperature is 50-63 DEG C, the
evaporation vacuum degree is 0.065-0.070 MPa, the third-effect concentration temperature is 42-55 DEG C, the
evaporation vacuum degree is 0.075-0.095 MPa, and the
solid content of the discharged concentrated material is 15-25%; and 3) carrying out
spray drying on the concentrated material, collecting the power, cooling, and packaging. According to the present invention, the soybean milk powder has characteristics of easy
brewing, no
odor, no bean
flavor, good taste andhigh
protein digestion and
absorption rate; and with the salty
soy milk, people can enjoy the delicious taste of the soybean milk and can chew the fresh fragrance of vegetables.