Phenethyl alcohol glycoside-containing callicarpa kochiana extractive and preparation method thereof
A technology of phenethyl glucoside and extract, applied in the field of medicine, can solve the problems of low yield of phenethyl glucoside compounds, large toxic and side effects of organic solvents, unattainable concentration, etc., achieves the treatment of senile dementia, and is beneficial to industrialized production , the effect of high extraction rate
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example 1
[0128] Take 5kg of dried loquat leaf purple pearl and grind it into coarse powder.
[0129] Take loquat leaf purple pearl coarse powder, add 20 times of water, soak for 1 hour, heat and reflux under normal pressure for 1.5 hours, filter while hot, add 15 times of water to the dregs, heat and reflux for 1 hour, filter while hot, and combine the two extracts , concentrated under reduced pressure to a specific gravity of 1.15 (50°C), added ethanol until the alcohol content reached 60%, refrigerated for 12 hours, poured out the supernatant, filtered the remaining suspension, and combined the supernatant and filtrate. Concentrate the ethanol extract under reduced pressure until there is no alcohol smell, centrifuge at 2000rpm at 5-20°C, take the supernatant, and put it on a macroporous adsorption resin column (AB-8 type macroporous adsorption resin, produced by Tianjin Nankai University Chemical Plant), after the adsorption is saturated, first use 8 times of column volume water to ...
example 2
[0135] Take 6kg of dried loquat leaf purple pearl and grind it into coarse powder.
[0136] Take loquat leaf purple pearl coarse powder, add 30 times of water, soak for 1 hour, heat and reflux under normal pressure for 1.0 hour, filter while it is hot, add 20 times of water to the dregs, heat and reflux for 1 hour, filter while it is hot, combine the two extracts, Concentrate under reduced pressure to a specific gravity of 1.12 (50°C), add ethanol until the alcohol content reaches 60%, refrigerate for 12 hours, pour out the supernatant, filter the remaining suspension, and combine the supernatant and filtrate. Concentrate the ethanol extract under reduced pressure until there is no alcohol smell, centrifuge at 2000rpm at 5-20°C, take the supernatant and add it to the treated AB-8 macroporous adsorption resin (produced by Tianjin Nankai University Chemical Factory) to The flow rate of 2BV / h (column volume per hour) is applied to the macroporous adsorption resin column. After th...
example 3
[0138] Take 10kg of dried loquat leaf purple pearl and grind it into coarse powder.
[0139]Take loquat leaf purple pearl coarse powder, add 30 times of water, soak for 1 hour, heat and reflux under normal pressure for 1.0 hour, filter while it is hot, add 20 times of water to the dregs, heat and reflux for 1 hour, filter while it is hot, combine the two extracts, Concentrate under reduced pressure to a specific gravity of 1.12 (50°C), add ethanol until the alcohol content reaches 60%, refrigerate for 12 hours, pour out the supernatant, filter the remaining suspension, and combine the supernatant and filtrate. Concentrate the ethanol extract under reduced pressure until it has no alcohol smell, centrifuge at 2000rpm at 5-20°C, take the supernatant and add it to the treated AB-8 macroporous adsorption resin at 2BV / h (column volume per column volume) hour) flow rate on the macroporous adsorption resin column, after the adsorption is saturated, first use 6 times of column volume ...
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