The invention relates to a preparation method and application of multiflower knotweed
vine polysaccharide chelate
zinc. The problems of preparation of the multiflower knotweed
vine polysaccharide chelate
zinc and application thereof in preparation of health-care products and medicaments can be effectively solved. The method comprises the following steps of: extracting multiflower knotweed
vine powder in water in a weight ratio of 1: (8-10) at the temperature of 80 and 100 DEG C for 2 to 4 times and for 1.5 to 3 hours every time, filtering, combining the filtrate, performing concentration tillthe
relative density is 1.1 to 1.3, and obtaining multiflower knotweed vine
polysaccharide concentrate; mixing the multiflower knotweed vine polysaccharide concentrate and
zinc sulfate solution in equal volume, stirring the solution uniformly, regulating the pH value to be between 6.0 and 8.5 by using
sodium hydroxide solution, reacting for 2 to 3 hours at the temperature of between 70 and 90 DEGC, and obtaining multiflower knotweed vine polysaccharide chelate zinc solution; and dialyzing the multiflower knotweed vine polysaccharide chelate zinc solution, adding 95 percent
ethanol into the dialyzed solution till the
ethanol content reaches 80 to 90 percent, performing standing and
alcohol precipitation for 10 to 24 hours, filtering, obtaining
sediment,
drying and crushing, and thus obtaining the multiflower knotweed vine polysaccharide chelate zinc. The method is simple, the raw materials are rich, the product has wide application, the problem of low absorption of the conventional zinc supplementing product is solved, and the product has the effect of improving the
immunity of the body and is an innovation of Chinese medicaments.