The invention discloses rhizoma polygonati blood
protein polypeptide oral liquid as well as a preparation method and application thereof, and relates to the technical field of
functional food. The health-care beverage is prepared from the following raw materials in parts by weight: 10-25 parts of a rhizoma polygonati extract, 5-15 parts of blood
protein polypeptide, 3-10 parts of a fructus lycii extract, 2-8 parts of a red date extract, 1-5 parts of honey and 50-80 parts of
purified water. The rhizoma polygonati extract is prepared through the following steps that fresh rhizoma polygonati is cleaned and sliced, then a 70%-80%
ethanol solution with the
mass 3-5 times that of the rhizoma polygonati is added,
reflux extraction is conducted 2-3 times at the temperature of 50-65 DEG C, each time of
reflux extraction lasts for 1.5-2.5 h, extracting solutions are combined, vacuum concentration is conducted till no
alcohol smell exists, and the rhizoma polygonati extract is obtained. According to the application, the rhizoma polygonati extract, the fructus lycii extract, the red date extract and the blood
protein polypeptide with specific molecular weight are compounded, so that the combined action of
plant nourishing ingredients and animal-derived nutritional ingredients is realized,
polygonatum sibiricum
polysaccharide in the
polygonatum sibiricum extract,
lycium barbarum
polysaccharide in the
lycium barbarum extract and red date
polysaccharide in the red date extract can jointly regulate the immune function and relieve
physical fatigue.