4 results about "Rhubarb powder" patented technology

The application discloses a preparation method of a rhubarb extract, and comprises the following steps: S1, adding beta-glucosidase to rhubarb powder, then adding a eutectic solvent, stirring and enzymolysis to obtain an enzymolysis solution, wherein the eutectic solvent comprises a mixture of betaine, lactic acid and water; S2, filtering the enzymolysis solution to obtain filtrate and an enzymolysis solution; S3, sequentially immersing the filtrate in pure water and the eutectic solvent, and filtering to obtain an immersion solution; and S4, uniformly mixing the immersion solution and the enzymolysis solution, drying and sterilizing to obtain a rhubarb extract solid. The eutectic solvent composed of betaine and lactic acid and the beta-glucosidase are simultaneously added, so that the enzymolysis and extraction of the rhubarb can be realized, and the extraction rate of effective components, such as anthraquinones, stilbenes and tannin compounds, in the rhubarb is improved.

The invention relates to the technical field of traditional Chinese medicine extraction, and particularly discloses a method for extracting a rheum officinale extract by using a nano material. The method comprises the following steps: S1, crushing dried rhubarb to obtain rhubarb powder; s2, mixing menthol and octanoic acid to obtain an oil phase, adding a surfactant and an ascorbic acid aqueous solution into the oil phase, and uniformly mixing to obtain an oil-in-water emulsion; s3, mixing the rhubarb powder with the oil-in-water emulsion to obtain an extracting solution; adding a pMMC nano-material into the extracting solution, adjusting the pH value to 7.2-7.8, stirring for 10-15 minutes at room temperature, adsorbing the pMMC nano-material at the bottom of a container by using a permanent magnet, gathering the pMMC nano-material at the bottom of the container, and discarding the supernatant liquid to obtain an enriched solid; and S4, eluting the enriched solid, collecting the eluent, and drying by distillation to obtain the rhubarb extract. According to the application, the yield of the rhubarb extract can be improved, and the content of effective components in the rhubarb extract is relatively high.

The application relates to the technical field of kidney treatment, and particularly discloses a method for extracting emodin and application of the emodin in renal ischemia-reperfusion injury. The method comprises the following steps: S1, crushing traditional Chinese medicine rhubarb raw materials to obtain traditional Chinese medicine rhubarb powder; S2, mixing the traditional Chinese medicine rhubarb powder with ethanol and performing ultrasonic treatment to obtain a primary extraction solution; S3, adding cellulase to the primary extraction solution to obtain an enzymatic solution; S4, performing supercritical CO2 extraction on the enzymatic solution, and collecting an extraction phase; S5, adding ethyl acetate to the extraction phase for extraction, and then separating an organic phase; S6, crystallizing the organic phase, and filtering to obtain emodin crude products; and S7, recrystallizing the emodin crude products with methanol, and drying to obtain finished products. The method for extracting emodin can be used for preparing medicines for treating kidney diseases, in particular, renal ischemia-reperfusion injury, and has the advantages of high extraction efficiency, high product purity and a green and environment-friendly process.