METHOD OF PRODUCTION OF DRY DAIRY PRODUCTS Russian patent published in 2023 - IPC A23C9/00 

FIELD: food industry.

SUBSTANCE: invention relates to the food industry, namely to the production of dry dairy products of increased solubility. A method for the production of dry dairy products is proposed. Thermization of dairy raw materials is carried out at a temperature 63-68°C with aged from 15 to 30 seconds, cooled to a temperature of 4±2°C; then carry out the concentration of raw milk on film vacuum evaporation plant, where the raw milk is heated in a first series heaters to 46±2°C, 52±2°C, 57±2°C, 61±2°C; 65±2°C, respectively, and then sent to the plate heat exchanger, where it is heated to a temperature of 82±2°C and then to the pasteurizer where carry out heat treatment of raw materials at a temperature 76-97°C with an exposure of 5-7 seconds; then the flow from the pasteurizer is recirculated into a plate heat exchanger, in which the dairy raw materials are cooled to a temperature of 68±2°C, respectively, the raw materials coming from the last heater are heated; then the dairy raw materials are subjected to thickening in sequentially arranged four buildings of the evaporation plant. The dairy raw materials are first fed into the first body of the evaporation plant, where they are condensed at a pressure of 0.0685 MPa and a temperature of 68±2°C, then sent to the second body, where they are condensed at a pressure of 0.026 MPa and a temperature of 64±2°C, after which the dairy raw materials are sent to the fourth body, in which condensation is carried out at a pressure of 0.015 MPa and a temperature of 56±2°C, is then returned to the third body of the evaporation plant, in which condensation is carried out at a pressure of 0.020 MPa and a temperature of 60±2°C; from the third body, the condensed product is sent to a tubular heater, where it is heated to a temperature of 75±2°C, after which it is fed into the drying tower to the first stage of drying, which is carried out by spraying the condensed product in a hot air stream with a temperature of 170-190°C, and fed to the second stage, at which the particles are dried in a fluidized bed with hot air at a temperature of 80-110°C, after that, they are sent to dry and cool the dry product, which is carried out in a fluidized bed with air at first at a temperature of 45-60°C, then at a temperature of 8-10°C to a final humidity of 3-5% and to a dry product temperature no higher than 30°C. A fine fraction of dry product particles separated at the outlet of the drying tower is fed to the first stage of drying.

EFFECT: proposed method makes it possible to increase the solubility of milk powder with the preservation in the native state of the amount of whey proteins of milk more than 4 mg/g with a simultaneous increase in microbiological parameters.

9 cl, 1 dwg, 2 tbl, 3 ex