Traditional Chinese medicine topical gel and preparation method thereof
A technology of gel for external use and traditional Chinese medicine, which is applied in the direction of medical formulas, medical preparations with non-active ingredients, medical preparations containing active ingredients, etc. It can solve problems such as poor compatibility, increase the stability of preparations, and shorten swelling. Effect of time, optimal pharmacodynamic effect
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Embodiment 1
[0029] 1. Formula:
[0030]
[0031] 2. The original preparation method of Wentong ointment
[0032] (1) The above twenty-two flavors, except menthol, borneol, camphor balls, methyl salicylate, and turpentine, and the other seventeen flavors such as psoralen, were extracted twice with 70% ethanol under reflux, each time for 2 hours, and combined The extract is filtered, and the filtrate is concentrated to a clear paste with a relative density of 0.85-0.95 (60°C);
[0033] (2) Take 960g of carbomer, add 18400mL of water to soak for 24h, add clear paste and continue to soak for 24h, mix well, add 500g of triethanolamine to dissolve, polysorbate-80 1600g, mix well;
[0034] Add menthol, borneol, camphor, methyl salicylate, turpentine and 500 g of laurocaprazine to dissolve, mix well, pack separately, and make 1000 sticks to obtain.
[0035] 3. A new process is used to prepare Wentong ointment emulsion-type gel, including the following steps:
[0036] (1) The above twenty-tw...
Embodiment 2
[0041] Optimization of extraction process
[0042] (1) Evaluation criteria: content of psoralen and isopsoralen, yield of dry paste, weighted comprehensive score.
[0043] Determination method of psoralen and isopsoralen content:
[0044] Chromatographic conditions:
[0045] Chromatographic column: InertsilODS-SPC18 column (150mm×4.6mm, 5μm); mobile phase: acetonitrile-0.02mol / L sodium dihydrogen phosphate solution (28:72); detection wavelength: 246nm; column temperature: 30°C; flow rate: 1.0 mL / min; take 10 μL of the test solution, and inject it for determination according to the above-mentioned high-performance liquid chromatography method.
[0046] Preparation of the test solution:
[0047] Preparation of the test solution: take the alcohol extract of Wentong ointment, put it in a separatory funnel, add n-hexane to extract 5 times, 15mL each time, combine the n-hexane solution, evaporate the solvent, add methanol to dissolve the residue and dilute it to a 10mL volumetric...
Embodiment 3
[0058] Embodiment 3 formulation process optimization
[0059] 1. The choice of glycerin dosage
[0060] Take 1.2 parts of carbomer, add 0 parts, 1.75 parts, 2.75 parts, 3.75 parts and 4.75 parts of glycerin respectively, and then add 24 mL of water to swell, and investigate the effect of glycerin dosage on the swelling time of carbomer. The experimental results are shown in Table 2.
[0061] Table 2 The effect of glycerin dosage on the swelling time of carbomer
[0062] Glycerin dosage (parts)
[0063] The experimental results show that the addition of glycerin can wet the carbomer and shorten the swelling time. When the amount of glycerin is 1.75 parts, glycerin and carbomer are just mixed until the carbomer is no longer dusty; when the amount of glycerin is 3.75 parts, glycerin and carbomer can be mixed evenly; If the pom clusters are too large, the swelling time will be longer. Therefore, adding an appropriate amount of glycerin to the new process can significa...
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