Eye drop for treating xerophthalmus and preparation method of eye drop
A technology of eye drops and solutions, which is applied to medical preparations containing active ingredients, sensory diseases, and pharmaceutical formulas, etc., can solve problems that have not been found in previous cases or literature reports, and achieve the elimination of turbid precipitation, improve curative effect, and accelerate onset of effect the effect of time
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experiment example 1
[0049] Experimental example 1, extraction process experiment
[0050]In this experiment, the method of combining single factor and orthogonal experiment was adopted, and the weighted average coefficient of hydroxysafflower yellow A (abbreviation: HSYA) and total alkaloids was used as the investigation index, and the type of solvent (water, ethanol), solvent concentration (65-95%), dosage (6-10 times), extraction time (1-4h), number of times (2-4 times), temperature control (45-90°C) and other factors to optimize selection, found that the extraction temperature, solvent The dosage and the number of extractions have a great influence on the extraction results, thus screening and determining the best extraction process as follows: adding 90% ethanol to the medicinal materials for 2 extractions, adding 8 times the amount for the first time, extracting for 3 hours, and adding 8 times the amount for the second time, Extracted for 2 hours, the extraction temperature was controlled at...
experiment example 2
[0051] Experimental example 2: Water sinking process experiment
[0052] Weigh 91g of safflower, 91g of myrobalan, and 30.25g of Corydalis serrata, add 90% ethanol to extract twice, add 8 times the volume for the first time, extract for 3 hours, add 8 times the volume for the second time, extract for 2 hours, Filtrate, recover ethanol from the filtrate, and then concentrate to a relative density of 1.25 (measured at 50°C), divide it into 3 parts on average, add 3 times the amount of water to the first part, add 4 times the amount of water to the second part, and add 5 times the amount to the third part Measure water, respectively add to the above-mentioned alcohol-water suspension, stir, let stand for 48 hours, filter, concentrate under reduced pressure, measure the content, and calculate the transfer rate of gallic acid.
[0053] Table 1 Water sinking process analysis table
[0054]
[0055] The results show that adding 3 times the volume of water, the content is slightly...
experiment example 3
[0056] Experimental example 3, bear bile powder processing method experiment
[0057] Bear bile powder is a water-soluble component, and the conventional method and literature method are all to add a certain amount of water to dissolve, and then directly proceed to the next step.
[0058] The present invention adopts the above method to find that the next step of preparation after the bear bile powder is dissolved in water will inevitably lead to turbidity, which cannot be avoided by high-speed centrifugation.
[0059] The present invention finds through experiments that after the bear bile powder is dissolved in water, it is added to the ethanol extract and then precipitated with water, then concentrated to dryness after filtration, dissolved in water, and then added corresponding auxiliary materials to make an eye drop preparation, which can solve the above problems. The specific experiments and results are as follows:
[0060] Mother liquor: the alcohol-extracted water sed...
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