Method for extracting general iridoid glycoside from 'Duyiwei' of Tibet medicine and application
A technology of total iridoid glycosides and an extraction method, which are applied in the field of extracting total iridoid glycosides from the unique flavor of Tibetan medicine and their application fields, and achieve the effects of promoting blood coagulation and shortening bleeding time.
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Embodiment 1
[0044]Embodiment 1: get 5 kg of the above-ground part of Duyiwei as raw material, pulverize it, cross a 20-mesh sieve, add 25000 ml of ethanol with a volume percentage concentration of 70% at 50 ° C, stir and extract for 3 hours, filter, Add 25,000ml of ethanol with a volume percentage concentration of 70% to the dregs (repeatedly extract 3 times), combine the filtrates, concentrate the filtrate under reduced pressure to an extract, then dissolve it with 10,000ml hot water at 60°C, and filter to remove the precipitate after cooling . 4.5kg of the mother liquor has been eluted with ethanol (eluted with 95% ethanol until the ethanol eluent plus distilled water does not appear turbid, and then eluted the column with distilled water until there is no alcohol smell.) Polyamide (14 -30 mesh) column, the loading speed is 10ml / min, the polyamide column is washed with 30000ml of distilled water (flow rate is 10000ml / hour), and the mother liquor and water eluent flowing out from the pol...
Embodiment 2
[0045] Embodiment two, take 5 kg of the aboveground part of Duyiwei as raw material, pulverize it, pass through a 20 mesh sieve, add 25000 ml of ethanol with a volume percentage concentration of 30%, soak it warmly at 70 ° C, stir and extract for 2 hours, filter, Add 25,000ml of ethanol with a volume percentage concentration of 30% to the dregs (repeatedly extract 3 times), combine the filtrates, concentrate the filtrate under reduced pressure to an extract, then dissolve it in 10,000ml of hot water at 30°C, and filter to remove the precipitate after cooling . 4.5kg of the mother liquor has been eluted with ethanol (eluted with 95% ethanol until the ethanol eluent plus distilled water does not appear turbid, and then eluted the column with distilled water until there is no alcohol smell.) Polyamide (14 -30 mesh) column, the loading speed is 10ml / min, the polyamide column is washed with 30000ml of distilled water (flow rate is 10000ml / hour), and the mother liquor and water elue...
Embodiment 3
[0046] Embodiment three: get 5kg of above-ground part of Duyiwei as raw material, pulverize it, pass through a 20 mesh sieve, add 25000ml of ethanol with a volume percentage concentration of 50% at 20°C for warm soaking, stir and extract for 3 hours, filter, Add 25,000ml of ethanol with a volume percentage concentration of 70% to the medicinal residues (repeatedly extract 3 times), combine the filtrates, concentrate the filtrates under reduced pressure to an extract, then dissolve them in 10,000ml of 90°C hot water, and filter to remove the precipitate after cooling . 4.5kg of the mother liquor has been eluted with ethanol (eluted with 95% ethanol until the ethanol eluent plus distilled water does not appear turbid, and then eluted the column with distilled water until there is no alcohol smell.) Polyamide (14 -30 mesh) column, the loading speed is 10ml / min, the polyamide column is washed with 30000ml of distilled water (flow rate is 10000ml / hour), and the mother liquor and wa...
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