Application of lactose-free brown fermented milk in preparation of products for reducing blood sugar and blood fat

The invention discloses application of lactose-free brown fermented milk in preparation of products for reducing blood sugar and blood fat. The content of lactose in the lactose-free brown fermented milk is lower than 0.5 g/100g. The invention also discloses a preparation method of the lactose-free brown fermented milk, which comprises the following steps: sterilizing fresh milk, mixing the sterilized fresh milk with low-temperature lactase, and carrying out enzymolysis and browning treatment to obtain a browning material; and mixing the browning material with a leavening agent, fermenting, refrigerating, and carrying out after-ripening treatment, so as to obtain the lactose-free brown fermented milk. The application of the lactose-free brown fermented milk in preparation of products for reducing blood sugar and blood fat is provided for the first time, the lactose-free brown fermented milk can promote expression of ACSL3, FADS1, FADS2 and G0S2 genes by reducing expression of LPL genes, and the lactose-free b