The invention provides a soda water beverage added with
nattokinase and a preparation method and application thereof, the soda water beverage added with
nattokinase has a pH value of 7.8-8.2 and a
carbonation degree of 0.8-1.2 g / L, and contains
nattokinase, and the activity of the nattokinase is greater than or equal to 10,000 FU / L. The soda water beverage added with the nattokinase is applied to preparation of products for regulating PCSK9 activity, reducing the
low density lipoprotein cholesterol LDL-C level in blood or preventing / assisting in managing
obesity and related metabolic syndromes. The product is a beverage, a
health food or a
dietary supplement. The nattokinase can be used for specifically hydrolyzing the Ser153-Gly154 site of the PCSK9
protein, and the Ser153-Gly154 site of the PCSK9
protein can be specifically hydrolyzed. According to the beverage, the activity of nattokinase is protected by optimizing pH and a
carbonation system, the
intestinal absorption rate of the nattokinase is improved, and the function of PCSK9 is inhibited in a targeted manner so as to regulate blood
lipid metabolism. Compared with an existing oral
enzyme preparation, the oral
enzyme preparation has high efficiency, stability and consumption convenience, and an innovative diet intervention scheme is provided for
obesity and related metabolic diseases.