General flavone extractive of four medicaments including grassleaf sweetflag rhizome and preparation method thereof
A calamus four flavors and extract technology, applied in the preparation, detection and application fields of calamus four flavors total flavonoids extract, can solve the problems of unseen flavonoids extraction and its preparation method and use
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Embodiment 1
[0094] Embodiment 1: Preparation of calamus four-flavored flavonoids extract
[0095] Take 1.5kg of calamus four-flavor compound medicinal herb pieces, reflux extraction with 10L of 50% ethanol for 3 times, extract for 1 hour each time, recover the solvent under reduced pressure to obtain the extract, add a certain volume of water to disperse and dissolve, so that the amount of medicinal materials is equal to the volume of the solution after dispersion The ratio is 1:3.5. Through 7.5LAB-8 macroporous adsorption resin, the adsorption flow rate is 2Bv / h, the diameter-to-height ratio of the resin column is 1:10, and 1.5 times the resin volume is eluted with water for impurity removal, the impurity removal flow rate is 2Bv / h, and 50% ethanol is eluted 8 times the volume of the resin, the elution flow rate is 2Bv / h, collect the 50% ethanol eluate, recover the solvent, dry under reduced pressure, and obtain the calamus four-flavored flavonoids extract.
Embodiment 2
[0096] Embodiment 2: Preparation of calamus four-flavored flavonoids extract
[0097] Take 0.5 kg of calamus four-flavor compound medicinal herb decoction pieces, add 70% ethanol and 15 L ultrasonic extraction for 3 times, extract for 1.5 hours each time, recover the solvent under reduced pressure to obtain the extract, add a certain volume of water to disperse and dissolve, so that the amount of medicinal materials is the same as that of the dispersed solution The volume ratio is 1:5. Through 10L AB-8 macroporous adsorption resin, the adsorption flow rate is 2Bv / h, the diameter-to-height ratio of the resin column is 1:6, and the water is eluted to 2 times the volume of the resin for impurity removal. The impurity removal flow rate is 4Bv / h, and 50% ethanol is eluted 7 times the volume of the resin, the elution flow rate is 1Bv / h, collect the 50% ethanol eluate, recover the solvent, dry under reduced pressure, and obtain the calamus four-flavored flavonoids extract.
Embodiment 3
[0098] Embodiment 3: Preparation of calamus four-flavored flavonoids extract
[0099] Take 1.2 kg of calamus four-flavor compound medicinal herb decoction pieces, reflux extraction with 7% ethanol twice, the amount of solvent is 10 parts by volume, and extract for 2.5 hours each time, recover the solvent under reduced pressure to obtain the extract, add water to disperse and dissolve, so that the amount of medicinal materials is the same as that after dispersion The volume ratio of the solution is 1:10, through the 90-mesh polyamide equivalent to 7 volume times of the crude drug amount, the adsorption flow rate is 2BV / h, the diameter-to-height ratio of the polyamide column is 1:10, and the water elution of 3 times the volume of the polyamide, the flow rate 4BV / h; 70% ethanol of 7 times the volume of polyamide is eluted, the elution flow rate is 7BV / h, the 70% ethanol eluate is collected, the solvent is recovered, and dried under reduced pressure, which is the Acorus siwei flavo...
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