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Traditional Chinese medicine extraction technology to extract effective components in Chinese herbal medicine

by:Deyuan      2020-08-19
Traditional Chinese medicine extraction technology to extract the effective components in Chinese herbal medicine is usually will be the total extract, choose three or four different polar solvents, from low to high polarity polarity for extraction and separation step by step.
water extract or alcohol extract v for glue content, often hard to evenly dispersed in the low polar solvent, it cannot recover completely, can mix right amount of inert filler, such as diatomaceous earth or fiber powder, then low temperature or natural drying, crushing, again to choose solvent extraction in turn, make the total extract of each component, according to its solubility in different polar solvent the differences of separation. When the traditional Chinese medicine extraction technology to extract the effective components in Chinese herbal medicine use Chinese herbal medicine chemical composition, solubility in the different polar solvent for separation and purification, is the most commonly used method.
broadly speaking, the Chinese herbal medicine to add another solvent extraction solution, precipitation or some certain ingredients, or precipitate the impurities, and the method of traditional Chinese medicine extraction technology to extract the effective components in Chinese herbal medicine. Water extract of Chinese herbal medicine often contains gum, phlegm, protein, starch gelatinization, add a certain amount of ethanol to the composition of the insoluble in ethanol precipitation precipitation in the solution, and achieve the goal of separated from other components.
compounds can be used to not being mixed with water soluble organic solvent to extraction separation. General Chinese medicine extraction technology to extract the effective components in Chinese herbal medicine total extract of Chinese herbal medicine by acid water, alkaline treatment, can be divided into three parts: water soluble in acid as basic ingredient, soluble in caustic soda acid composition, acid, alkali insoluble to neutral components. Still can use different acid, alkalinity further separation, they dissolve in sodium bicarbonate, sodium carbonate and sodium hydroxide, respectively to separation can be performed. All of these properties contribute to the separation and purification of various compounds. Source:
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