Process for preparing corydalis saxicola bunting total alkali
A technology of Coptis chinensis and alkali precipitation, applied in the field of natural medicine, can solve the problems of increasing equipment cost and prolonging the production cycle, and achieve the effect of short production cycle
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Embodiment 1
[0018] Take Litectinus chinensis medicinal material, soak it in 1% hydrochloric acid aqueous solution with 10 times the weight of the material for 8 hours, reflux extraction 3 times, add 10 times the amount of the above solvent for 1.5 hours each time, combine the extracts, filter, and add alkali to adjust the pH to 6-7, concentrate to a relative density of 1.2, add 1.0% hydrochloric acid aqueous solution to 8 times the weight of the medicinal material, reflux, extract twice, each time for 1.5h, filter, combine the acid and water, and use 30% sodium hydroxide Adjust the pH of the solution to 6-7, concentrate to a relative density of 1.06, refrigerate for 24 hours, centrifuge, add 1.0% hydrochloric acid solution equivalent to 8 times the weight of the precipitate to reflux each time, extract twice, each time for 1.5 hours, filter, Combine the acid and water, adjust the pH to 6-7 with 30% sodium hydroxide solution, concentrate to a relative density of 1.05, refrigerate for 24 hou...
Embodiment 2
[0020] Take Litectin chinensis medicinal material, soak it with 0.5% sulfuric acid aqueous solution equivalent to 10 times the weight of the medicinal material for 12 hours, then percolate with 40 times the amount of 1% hydrochloric acid aqueous solution at a flow rate of 5ml / min, add alkali to the percolation solution to adjust the pH to 6-7 , concentrated to a relative density of 1.12, added to an amount equivalent to 8 times the weight of the medicinal material, refluxed with an aqueous solution of sulfuric acid containing 0.5%, extracted twice, each time for 1 hour, filtered, combined with the acid and water, adjusted to pH 6-7 with sodium carbonate, concentrated When the relative density reaches 1.05, refrigerate for 24 hours, centrifuge, add 0.5% sulfuric acid solution equivalent to 8 times the weight of the precipitate to reflux each time, extract twice, 1.5 hours each time, filter, combine the acid and water, and use sodium carbonate solution Adjust the pH to 6-7, conce...
Embodiment 3
[0022] Take the Litectinus chinensis medicinal material, soak it in 2.0% acetic acid aqueous solution with 10 times the weight of the material for 2 to 12 hours, reflux extraction 3 times, add 10 times the amount of the above solvent each time for 1.5 hours each time, combine the extracts, filter, and add alkali Adjust the pH to 7-8, concentrate to a relative density of 1.15, add 2.0% acetic acid aqueous solution to 8 times the weight of the medicinal material, reflux, extract twice, each time for 1.5h, filter, combine the acid and water, adjust with sodium carbonate PH to 7-8, concentrate to relative density to 1.06, refrigerate for 24 hours, centrifuge, add 2.0% acetic acid solution equivalent to 8 times the weight of the precipitate to reflux each time, extract twice, each time for 1.5 hours, filter, acid water The solutions were combined, the pH was adjusted to 7-8 with sodium carbonate, concentrated to a relative density of 1.05, refrigerated for 24 hours, centrifuged, and...
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