Method for preparing partially slag-removed soybean milk by cold milk process

The invention provides a method for preparing partially slag-removed soybean milk by a cold milk process. The method comprises the following steps: (1) performing pulping: mixing peeled soybeans with RO water, and then performing oxygen-isolated pulping to obtain pulp; (2) removing beany flavor: performing lipoxygenase passivation on the pulp obtained in the step (1); (3) performing residue removal: performing centrifugal separation on the pulp subjected to beany flavor removal in the step (2) to remove 20-90wt% of bean dregs; (4) performing grinding and refining: grinding and refining the pulp subjected to residue removal in the step (3); (5) performing enzyme deactivation: inactivating a trypsin inhibitor in the pulp ground and refined in the step (4); (6) performing deodorizing: deodorizing the pulp subjected to enzyme deactivation in the step (5) through negative pressure; and (7) performing homogenizing and refining: performing high-pressure homogenizing and refining on the soybean milk subjected to bean