The invention provides a preparation method of an
elaeagnus longipes beverage. An appropriate amount of water is added to
elaeagnus longipes fresh fruits, the mixture is mechanically homogenized,
filtration and
slag removal are performed, fresh
rubus rosifolius fruits are added to filtrate, the mixture is mechanically homogenized, and homogenate is obtained;
high protein enzymatic
hydrolysate is added to the homogenate for homogenization, an obtained product is mixed with the homogenate, the
flavor is adjusted, instantaneous sterilization and canning are performed, and the fresh fruit composite beverage is obtained. By means of the method, the nutritional ingredients are more comprehensive, amino acids supplement each other, the content of water-soluble
pigment substances is increased, the content of
small peptide substances can also be increased, and absorption is facilitated. By means of the beverage preparation process, the
utilization rate of the fresh
rubus rosifolius fruits can be greatly increased, the obtained beverage product is suitable for vast consumers, and the process is simple and easy to operate. By means of the method, the SOD (
superoxide dismutase) activity is greatly stabilized, the content of water-soluble
pigment substances is increased, the content of
small peptide substances can also be increased, and absorption is facilitated.