Eye drops with capillary artemisia, cape jasmine and baikal skullcap root, and its preparing method
The technology of yellow eye drops and eye drops, applied in the field of Yinzhihuang pharmaceutical preparations, can solve the problems of loss of health, work and life, increase of drug-resistant strains, increase of adverse reactions, etc., and achieves good clarity, good absorption and utilization High, excellent therapeutic effect
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Embodiment 1
[0021] Capillary wormwood extract Take capillary capillary and use 15 times the amount of 90% ethanol as solvent to infiltrate according to the percolation method. Combine the percolation liquid, remove oils such as chlorophyll, and filter with a hollow fiber membrane with a molecular weight cut-off of 30,000 aperture. The filtrate was concentrated to a relative density of 1:1.30 (70°C), and dried under reduced pressure to obtain an extract.
Embodiment 2
[0023] Gardenia extract: Take Gardenia, add 8 times the amount of 70% ethanol to reflux and extract three times, each time for 40 minutes, combine the reflux liquid, and filter with a hollow fiber membrane with a molecular weight cut-off of 30,000 pores. The filtrate was concentrated to a relative density of 1:1.30 (70°C), and dried under reduced pressure to obtain an extract.
Embodiment 3
[0025] Preparation of Scutellaria baicalensis extract Scutellaria baicalensis was decocted with water twice, each time for 1 hour, filtered, combined with the filtrate, adjusted to pH 1.0-2.0 with hydrochloric acid, kept at 80°C, left standing, baicalin coagulated and precipitated, and filtered. Discard the filtrate, add an appropriate amount of water to the precipitate, stir well, adjust the pH value to 7.0 with 40% sodium hydroxide solution, add an equal amount of ethanol, stir to dissolve, and filter. The filtrate was adjusted to a pH value of 1.0-2.0 with hydrochloric acid, heated to 60°C, allowed to stand still to precipitate baicalin, and filtered. The precipitate was successively washed with appropriate amount of water and different concentrations of ethanol until the pH value reached 7.0, evaporated the ethanol, and dried under reduced pressure to obtain the final product. This product contains baicalin should not be less than 85.0%.
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