| abstract |
The invention provides solid concentrated milk and a preparation method thereof, belonging to the technical field of dairy product processing, wherein the preparation method comprises the following steps: freezing the concentrated milk to a central temperature of-15 to-20 ℃ to obtain solid concentrated milk; the solid content of the concentrated milk is 14-18%; the freezing mode comprises plate freezing at-28 to-32 ℃; the volume of the solid concentrated milk is 800-1200 cm 3 . When the cow milk is stored, the stability of the cow milk is reduced due to the action of microorganisms, lipase and protease in the cow milk, and the freezing of the concentrated cow milk can inhibit the propagation of the microorganisms in the cow milk and reduce the activity of the lipase and the protease, so that the cow milk can be maintainedStability, and further can improve the shelf life of the concentrated milk, and is beneficial to production and transportation. |