The invention discloses low-
lactose soybean-milk-flavored yoghourt. The raw materials of the low-
lactose soybean-milk-flavored yoghourt comprise the following components in parts by weight of 10-20 parts of soybeans, 10-25 parts of nonfat dry milk
powder, 4-6 parts of granulated
sugar, 2-5 parts of water-soluble dietary fibers, 0.01-0.1 part of
lactase, 0.4-0.8 part of
xanthan gum, 0.4-0.8 part ofpropylene glycol alginate, and 2-5 parts of a composite
fermentation agent, wherein the
lactase is added, so that the
lactose low in
sweetness and
solubility in milk can be converted into
monosaccharide (glucose and
galactose) high in
sweetness and
solubility; the possibility that the lactose in the milk is crystallized and separated out is reduced; and besides, in the
fermentation process, the lactose which cannot be used by general
yeast can be hydrolyzed to form the glucose for use. The invention further discloses a preparation method of the low-lactose soybean-milk-flavored yoghourt. Thepreparation method comprises the following steps of preparing materials, pretreating the soybeans, performing soaking, performing
grinding to obtain soybean milk, performing filtering, performing sterilization, performing blending, performing homogenizing, performing sterilization, performing cooling, performing inoculating, performing
fermentation and performing
cold storage. The low-lactose soybean-milk-flavored yoghourt is simple to process, low in cost, high in
nutrient value and convenient to eat, and is favorable for health of human bodies, and the preparation method is suitable for preparation of the low-lactose soybean-milk-flavored yoghourt.