Nervate twayblade herb extracts and application thereof
A technology of blood serum and extract, applied in the field of blood serum extract, can solve the problem of not seeing active ingredients in effective parts of blood serum, and achieve good hemostatic effect
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Embodiment 1
[0015] Example 1 See the preparation of serum ethanol extract
[0016] Take the serum medicinal material, crush it, add 85% ethanol to reflux extraction twice, each time for 3 hours, add 10 times the amount of medicinal material (W / V) ethanol each time, filter while it is hot, combine the filtrate, and recover until there is no alcohol smell After drying, the ethanol extract of the serum can be obtained.
[0017] During the extraction with ethanol, cold soaking, reflux, ultrasonic or microwave extraction can also be used.
Embodiment 2
[0018] Example 2 See the preparation of each effective fraction of serum
[0019] Take the ethanol extract of the serum prepared in Example 1, add water to suspend it, then extract with equal volumes of petroleum ether, diethyl ether, ethyl acetate, and n-butanol successively, extract each solvent 3 times, and collect the petroleum ether extract, Ether extract, ethyl acetate extract, n-butanol extract and raffinate, after recovering the solvent, dry under reduced pressure at 60°C to obtain the serum petroleum ether part, ethyl ether part, ethyl acetate part and n-butanol part respectively and the aqueous phase.
[0020] Will see the serum ether extract through repeated silica gel column chromatography, and gradient elution with different ratios of petroleum ether-ethyl acetate, petroleum ether: ethyl acetate (30:1) to obtain compound (1), petroleum ether: ethyl acetate (20:1) to obtain compound (2), petroleum ether: ethyl acetate (10:1) to obtain compound (3), and to apply a ...
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