Preparation method of shuanghuanglian freeze-dried powder for intravenous injection
A technology for intravenous administration of Shuanghuanglian, which is applied in the field of preparation of Shuanghuanglian freeze-dried powder, can solve the problems of high cost, long drying time and low efficiency of Shuanghuanglian freeze-dried powder, and achieves short drying time, rapid sublimation, and reduced The effect of production costs
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specific Embodiment approach 1
[0016] Embodiment 1: A preparation method of Shuanghuanglian freeze-dried powder for intravenous administration according to the present embodiment is carried out according to the following steps:
[0017] 1. Weigh 2 parts of forsythia, 1 part of honeysuckle and 1 part of Scutellaria baicalensis by weight, and set aside;
[0018] 2. a. Decoct the Scutellaria baicalensis weighed in step 1 with water for 2 to 4 times, each time for 0.5 to 1.5 hours, filter, combine the filtrate, adjust the pH value of the filtrate to 1.0 to 2.0, and keep it warm at 75 to 85°C for 15 to 60 minutes , stand at room temperature for 12-24 hours, filter, collect the precipitate, add 6-10 times the weight of the precipitated water, stir evenly, adjust the pH value to 6.0-7.0 to obtain a mixed solution; b, add 0.5-2 times the volume of the mixed solution to the mixed solution 95% ethanol, filter, collect the filtrate, adjust the pH value of the filtrate to 1.5-2.5, keep it at 55-65°C for 15-60min, let i...
specific Embodiment approach 2
[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that: the mass-volume ratio of the activated carbon described in step c to the initial mixture is 0.008-0.01 g: 1 mL. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0026] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the pH value of the filtrate is adjusted to 1.0 as described in step a, and the temperature is kept at 80° C. for 30 minutes. Others are the same as in the first or second embodiment.
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