Total coumarins extract from peucedanum praeruptorum dunn, and its preparing method and use
A technology of Baihuaqianhu and total coumarin, which is applied in the direction of testing pharmaceutical preparations, pharmaceutical combinations, pharmaceutical formulations, etc., can solve the problems of difficult quality control, slow action, etc., and achieves strong efficacy, small toxic and side effects, and safe range. big effect
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Embodiment 1
[0143] A total coumarin extract of Peucedanum candidum, which contains 50% of sagerin by weight percentage;
[0144] Grind the root of Peucedanum baicalensis into coarse powder, heat reflux to extract 8 times the amount of 60% ethanol, filter, concentrate the filtrate to recover the ethanol until it has no alcohol smell, add distilled water to the obtained paste, mix it with 3 times the amount of ethyl acetate Extracted 3 times, recovered ethyl acetate, concentrated into a thick paste, added petroleum ether, ultrasonicated for 20 minutes and then stood still, precipitated, filtered, and washed with petroleum ether until light yellow.
Embodiment 2
[0146] A total coumarin extract of Peucedanum candidum, which contains 60% of sagerin by weight percentage;
[0147] Grind the root of Peucedanum baicalensis into coarse powder, heat reflux to extract 8 times the amount of 75% ethanol, filter, concentrate the filtrate to recover the ethanol until it has no alcohol smell, add distilled water to the obtained paste, mix it with 1 times the amount of ethyl acetate Extract 5 times, recover ethyl acetate, condense into a thick paste, add petroleum ether, let stand after ultrasonication for 20 minutes, precipitate precipitates, filter, and wash the precipitate with petroleum ether until light yellow.
Embodiment 3
[0149] A total coumarin extract of Peucedanum candidum, containing 75% of sagerin by weight percentage;
[0150] Grind the root of Peucedanum baicalensis into coarse powder, heat and reflux extraction with 10 times the amount of 95% ethanol, filter, concentrate the filtrate to recover the ethanol until it has no alcohol smell, add distilled water to the obtained paste, mix it with 1 times the amount of ethyl acetate Extracted 3 times, recovered ethyl acetate, concentrated into a thick paste, added petroleum ether, ultrasonicated for 20 minutes and then stood still, precipitated, filtered, and washed with petroleum ether until light yellow.
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