The invention provides
cranberry juice with low acidity and high
antioxidant activity and a preparation method thereof, and belongs to the technical field of
food processing, and the preparation method comprises the following steps: (1) pulping blanched and color-protected cranberry fruits, and adding
pectinase for enzymolysis to obtain cranberry pulp; (2) filtering and centrifuging the cranberry pulp after enzymolysis to obtain
cranberry juice, and sterilizing and deactivating
enzyme; and (3) adding
lactobacillus rhamnosus into the sterilized and
enzyme-deactivated
cranberry juice, and carrying out anaerobic
fermentation. According to the method, the cranberry fruits are used as raw materials,
pectinase is specifically used, the juice yield of juice can be increased, the
clarity of the juice can be improved, the selected
lactobacillus rhamnosus has a remarkable acid reduction effect, an optimal cranberry enzymolysis process and an optimal
lactic acid bacteria fermentation acid reduction process are provided, the sour and
astringent taste of the fresh cranberries can be improved, and the taste of the cranberries is improved. The nutritional ingredients in the cranberries are reserved, the
antioxidant activity of the cranberries is improved, the health-care effect of the cranberry juice is improved, and the storability and the additional value of the product are improved.