Dendrobium officinale kimuraet migo extract rich in flavone carbon glycosides and application of extract
A technology of Dendrobium officinale and flavonoid carbon glycosides, applied in the field of medicine, can solve the problems of rare reports on the activity of crude polysaccharide components, and achieve the effects of promoting comprehensive utilization and development, expanding the scope of application, and improving metabolic disorders.
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Embodiment 1
[0024] (1) Raw material selection: choose Dendrobium candidum as raw material, dry and pulverize it for later use.
[0025] (2) Reflux extraction: Add the raw materials into an ethanol aqueous solution with a volume concentration of 80%, put them into a decoction machine, wherein the mass volume fraction of the medicinal materials is 50g / mL; reflux extraction once, 3.0h each time, and filter;
[0026] (3) The combined filtrates are concentrated under reduced pressure: the concentration temperature is 55°C, the vacuum degree is -0.07~-0.09Mpa, the concentrated solution has no alcohol smell, and the crude extract is obtained;
[0027] (4) Use petroleum ether and water-saturated n-butanol to extract the crude extract successively, select the n-butanol part, concentrate under reduced pressure (concentration temperature 60° C.) to remove n-butanol, and obtain apigenin-containing aglycone after drying flavonoid glycosides extract.
Embodiment 2
[0029] (1) Raw material selection: the medicinal dregs extracted from Dendrobium officinale were selected as raw materials, dried and pulverized for later use.
[0030] (2) Reflux extraction: Add the raw materials into absolute ethanol, put them into a decoction machine, wherein the mass volume fraction of the medicinal materials is 125g / mL; reflux extraction 4 times, each time for 0.5h, and filter;
[0031] (3) The combined filtrates are concentrated under reduced pressure: the concentration temperature is 50°C, the vacuum degree is -0.07~-0.09Mpa, the concentrated solution has no alcohol smell, and the crude extract is obtained;
[0032] (4) Use petroleum ether and ethyl acetate to extract the crude extract successively, select the ethyl acetate part, concentrate under reduced pressure (concentration temperature 60°C) to remove the selected ethyl acetate, and obtain the aglycon containing apigenin after drying Flavonoid glycosides extract.
Embodiment 3
[0034] (1) Raw material selection: the medicinal dregs extracted from Dendrobium officinale were selected as raw materials, dried and pulverized for later use.
[0035](2) Reflux extraction: Add the raw materials into an ethanol aqueous solution with a volume concentration of 60%, put them into a decoction machine, wherein the mass volume fraction of the medicinal materials is 55g / mL; reflux extraction 3 times, each time for 1h, and filter;
[0036] (3) Concentrate the combined filtrate under reduced pressure: the concentration temperature is 65°C, the vacuum degree is -0.07~-0.09Mpa, the concentrated solution has no alcohol smell, and the crude extract is obtained;
[0037] (4) Adopt polyamide column chromatography, use pure water, 20% ethanol, 70% ethanol to elute successively, collect 70% eluate, concentrate under reduced pressure (concentration temperature is 55 ℃, vacuum degree is-0.07~-0.09Mpa ), until there is no alcohol taste, and after drying, the flavonoid carbon gly...
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