The invention discloses a preparation method of a zero-
carbohydrate dairy product, which comprises the following steps: S1, performing purification treatment on
raw milk,
degreasing, and separating to obtain cream and
skimmed milk; s2, feeding the
skimmed milk into membrane separation equipment through a pump, and performing circular treatment for 10-60 minutes to obtain a concentrated solution; s3, adding an eluent at 60-70 DEG C into the concentrated solution in the step S3, and continuously circulating for 20-40 minutes; s4, sampling and detecting the contents of
lactose and total carbohydrates in the concentrated solution, backfilling cream, and homogenizing; and S5, circulating the homogenized material at 60-70 DEG C for 20-40 minutes to complete
pasteurization, and performing hot filling to obtain the
carbohydrate-free dairy product. According to the preparation method of the zero-
carbohydrate milk product,
lactose and various oligosaccharides in
skimmed milk can be thoroughly stripped, the
carbohydrate content of the final product is less than or equal to 0.5 g / 100g, the zero-carbohydrate standard is really achieved, the strict requirements of
ketogenic diet, diabetic patients and
sugar-controlled people are completely met, and the market prospect is wide. And
blood sugar fluctuation and metabolic burden caused by
sugar intake are avoided from the source.