Preparaton of banlangen and method for controlling quality
A quality control method, the technology of Radix Radix, applied in the direction of testing pharmaceutical preparations, pharmaceutical formulas, measuring devices, etc., can solve problems such as quality fluctuations, poor controllability of Radix Radix Radix preparations, complex Radix Radix Radix components, etc., and achieve high reproducibility and stable preparations Effect
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experiment example 1
[0028] Preparation of Experimental Example 1 Radix Radix Radix Original Medicinal Material Powder
[0029] Radix isatidis is dried at low temperature (below 60°C), cut into pieces, powdered, and passed through a No. 2 sieve.
experiment example 2
[0030] Preparation of Experimental Example 2 Radix Radix Eye Drops
[0031] Take 500g of Radix Radix, add 10 times the amount of water and decoct twice, the first time for 2 hours, the second time for 1 hour, combine the decoction, filter, concentrate the filtrate to about 750ml, cool, add ethanol to make the alcohol content reach 70% , stir well, refrigerate for 24 hours, filter, recover the ethanol from the filtrate to 350-500ml, refrigerate overnight, filter, adjust the pH value of the filtrate to 8.0-8.5 with ammonia test solution, stir well, refrigerate for 48 hours, filter, and remove by heating For ammonia, add 1g of ethylparaben, add distilled water to 1000ml, sterilize, filter with a G4 vertical melting funnel and a 0.22um filter membrane, and pot it to obtain.
experiment example 3
[0032] Experimental Example 3 Preparation of Isatidis in-situ Gelling Eye Drops
[0033] Take 500g of Radix Radix, add 10 times the amount of water and decoct twice, the first time for 2 hours, the second time for 1 hour, combine the decoction, filter, concentrate the filtrate to about 750ml, cool, add ethanol to make the alcohol content reach 70% , stir well, refrigerate for 24 hours, filter, recover the ethanol from the filtrate to 350-500ml, refrigerate overnight, and filter; take another 3g of carbomer and add appropriate amount of distilled water to fully swell, 12g of hydroxypropyl methylcellulose and ethylparaben Add 1g of distilled water to dissolve, combine the above solutions, add 8.5g of sodium chloride to adjust the osmotic pressure, add distilled water to 1000ml, adjust the pH to 5.5-6.0 with sodium hydroxide, sterilize, and filter with a G4 vertical melting funnel and a 0.22um filter membrane. Potting, that is.
[0034] The so-called in-situ gelling eye drops re...
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