49results about How to "Reduce tannin content" patented technology

The invention discloses a separation method of rhubarb-combined anthraquinone and rhubarb tannin, belonging to the separation of anthraquinone. The method comprises the steps: one part of traditional Chinese medicine rhubarb sub cargo is weighted according to the weight parts, and then added into 4-15 parts of boiling water for decoction, and the liquid medicine is collected; the rhubarb sub cargo is sliced, then extracted for 3-4 times by boiling water with 10-25 parts of water adding amount each time, and then filtered, and all the liquid medicine is merged; 0.1-0.5 part of soy protein flour is added into the liquid medicine, then the liquid medicine stands and is filtered by a screen with 60-80 meshes, and then the deposit is dried at low temperature to obtain the rhubarb tannalbin extractive, thus realizing the separation of rhubarb tannin; liquid supernatant is taken and passes through the well-treated macroporous resin, and then is eluted by 50%-90% ethanol, the eluent is collected, the ethanol is recovered, and the rhubarb-combined anthraquinone extractive is obtained after drying. Since the soy protein is a food component and has no poison, the separation method kills twobirds with one stone, and respectively obtains the rhubarb-combined anthraquinone extractive and the rhubarb tannalbin extractive.