Preparation method of ginseng total protein and application of ginseng total protein in improvement of Parkinson's disease

The invention relates to a preparation method of ginseng total protein and application of the ginseng total protein to improvement of Parkinson's disease, which comprises the following steps: (1) mixing dry ginseng powder with water, adjusting the pH value to 7.0-9.0, extracting at 4 DEG C for 4-12 hours, and separating to obtain supernate and residues; (2) replacing the dried ginseng powder in the step (1) with the residues in the step (1), and repeating the step (1) for 1-3 times; and (3) combining the supernate obtained in the step (1) and the supernate obtained in the step (2), adjusting the pH value to 3.0-5.0, staying overnight at 4 DEG C, centrifuging, taking the precipitate, adding water, adjusting the pH value to 7.0-9.0, redissolving the precipitate, carrying out interception and ultrafiltration by an ultrafiltration tube, taking the supernate, and freeze-drying to obtain the ginseng total protein. According to the invention, effective components and effective component group components can be kept