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产品技术
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The extracting tank is specially used for refrigeration, ambient temperature precipitation and solid-liquid phase separation of pharmaceutical chemical and food suspension liquid. Work principle: alcohol precipitation refers to a process where dissolved materials precipitate after alcohol is added into the solution. As most ingredients in herbs, such as alkaloids, saponins, organic acids, amino acids and polysaccharides, are soluble in water and alcohol, we can extract with water and then concentrate the extracting liquid. Add a proper amount of alcohol or water to precipitate the liquid and remove insoluble materials to finally get clear liquid. Alcohol extraction and water sedimentation method。
Refers to a process where a proper amount of alcohol is added to treat raw materials through percolation and reflux method and extract alkaloids and their salts and glycosides, essential oil and organic acids. Although polysaccharides, protein and starch and other inactive ingredients are not easy to dissolve, resins, grease, pigments and other impurities are still extracted. So, recover alcohol in the alcohol extract and then treat with water and refrigerate for a certain period to remove impurities. 40%~50 % alcohol can be used to extract cardiac glycosides, tannins, anthraquinone and its glycosides and amaroid; 60%~70 % alcohol used to extract glycosides; and alcohol of higher concentration used to extract alkaloids, volatile oil, resins and chlorophyll. Water extraction and alcohol precipitation method Refers to a process where herbs are decocted with water to extract active ingredients, such as alkaloids, glycosides, organic acids, amino acids and polysaccharides, and to remove water-soluble impurities, such as starch, protein, phlegm, tannins, pigments and inorganic salts. If a proper amount of alcohol is added to the water decoction, the solubility of some substances will change, so impurities can be removed partially or totally. If using 60%~ 70% alcohol, all the other impurities will be substantially removed besides tannins and resins. If adding alcohol 2 or 3 times with its concentration increasing to 75%~80%, we will enjoy a better effect of removing impurities。
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