Experiments on the preparation of fluidized ointment, extract and decoction
Experiments on the preparation of fluidized ointment, extract and decoction
The fluid infusion or infusion refers to the preparation made by extracting herbs with suitable solvents, evaporating some or all of the solvents, and adjusting the concentration to the specified standard. Unless otherwise specified, each ml of fluid infusion paste is equivalent to 1 g of the original herb, and each 1 g of the infusion paste is equivalent to 2-5 g of the original herb. fluid infusion paste agent, except for special provisions, generally with different concentrations of ethanol as a solvent, prepared by percolation, and sometimes also prepared by impregnation and decoction, and can also be used in the infusion paste with the prescribed solvent diluted made.
Operation method
percolation
Materials and Instruments
Licorice Move 1. 50 g of crude licorice powder with 50 ml of 1:200 ammonia, moistened for 15 minutes, drummed, ventilated and macerated for 24 hours. Caveat 1. General herbs with No. 7 powder as raw materials, too fine easy to plug the filter hole. 2. When the moistened powder is loaded into the cylinder, the pressure should be even and the tightness should be suitable, and the cylinder should be ventilated and then impregnated, so as not to affect the percolation and filtration. 3. This product contains glycyrrhizic acid should not be less than 7%, containing 20-25% ethanol. For more product details, please visit Aladdin Scientific website.
Ammonia solution Ethanol Distilled water
Balance Beaker Glass rod Measuring cylinder Funnel Filter paper Tube
2. Rapid percolation (3-5 ml/min).
3. filtrate (4-8 times the herb or until no sweetness) boiled for 5 minutes, decanted and filtered, concentrated in a water bath to about 35 ml.
4. After cooling, add concentrated ammonia to the appropriate amount to the significant ammonia odor, including the test, add ethanol and distilled water to 50 ml, standing, filtered that is obtained.