| 摘要 |
A method for producing lactose-removing milk products or low lactose milk products includes the stages as follows: firstly, the liquid milk is degreased to obtain low-fat milk liquid and milk fat. The low-fat milk is being added with milk coagulant and calcium salt while being stirred to obtain milk curd. The milk curd is heated, stirred, and cut into curd particles and whey. The curd particles are dissolved in a milk dissolving solvent to obtain the re-dissolved milk solution, while lactose is removed from the whey via membrane separation to obtain a de-lactose whey liquid or de-lactose whey powder. Then, the re-dissolved milk solution and the de-lactose whey liquid or de-lactose whey powder are mixed and dissolved together, with or without adding the original milk fat, and emulsified by adding an emulsifier to produce lactose-free milk liquid. Alternatively, the lactose-free milk liquid is homogenized and disinfected to obtain liquid milk or dried to obtain lactose-free milk powder. In case that the first step of degreasing is skipped and the milk liquid is directed treated with coagulant and dissolved in a milk-dissolving solvent to form a re-dissolved milk solution, and the lactose is removed from the whey by membrane separation and restoration, one may obtain low-lactose liquid milk or low-lactose milk powder. |
