140 results about "Stilbene glucoside" patented technology

The invention provides a separation and purification process of 2, 3, 5, 4'-tetrahydroxystilbene-2-O-beta-D-glucoside (short for stilbene glucoside). The separation and purification process comprises the steps of weighting a stilbene glucoside extractive, stirring a sample by using silica gel until the sample is loosened, eluting the loosened sample on a glass column by using an eluent, tracking and checking through a thin layer chromatography (TLC), merging a stilbene glucoside contained component, recovering a solvent, and drying to obtain the stilbene glucoside extractive; adding pure water, heating to dissolve the stilbene glucoside extractive, then, freezing and crystallizing the solution, carrying out suction filtration after the frozen and crystallized solution is molten, and washing the solution with the pure water to obtain a white crystal; transferring filter residues to a vacuum drying oven for drying to obtain a pure product of stilbene glucoside. The process is simple and feasible in operation, capable of improving the product purity, and capable of quickly separating and purifying a large amount of stilbene glucoside. The process is simple and convenient to operate, low in cost, stable in yield, capable of obtaining high-purity stilbene glucoside after re-crystallization treatment while keeping low cost and high yield, and suitable for meeting the requirements for large-scale industrial production.

The invention discloses an organic and inorganic compound fertilizer for polygonum multiflorum. The organic and inorganic compound fertilizer comprises organic fertilizer and inorganic fertilizer. The inorganic fertilizer comprises urea for nitrogenous fertilizer, calcium magnesium phosphate fertilizer for phosphate fertilizer and potassium sulfate for potash fertilizer. The organic and inorganic compound fertilizer is prepared from, by weight parts, 578-584 parts of organic fertilizer, 98-102 parts of urea, 238-244 parts of calcium magnesium phosphate fertilizer and 108-112 parts of potassium sulfate, and the organic and inorganic compound fertilizer is prepared from mixing uniformly the raw materials. Earthworm metabolic cow dung organic fertilizer is utilized by the organic fertilizer. The formula organic and inorganic compound fertilizer is subjected to scientific fertilizer application for the polygonum multiflorum, can reduce fibrous roots of the polygonum multiflorum, improve the utilization rate of the fertilizer and improve soil physico-chemical properties, so that the content of tetrahydroxystilbene glucoside and combined anthraquinone of the polygonum multiflorum is improved greatly, the high yield and high quality polygonum multiflorum is obtained, and the production cost is reduced greatly. The organic and inorganic compound fertilizer has the advantages of being high in utilization rate, stable in performance, easy to use and free of wetting and hardening phenomena, and the organic and inorganic compound fertilizer is favorable for popularization and application of a large area.