A kind of preparation method of ginseng flower extract
A technology of extract and ginseng flower, which is applied in the field of preparation of ginseng flower extract, can solve the problems of cumbersome processing, many steps, and long time consumption, and achieve the effects of high purity, saving solution, and reducing extraction steps
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[0025] The invention provides a preparation method of ginseng flower extract, and its steps and conditions are as follows:
[0026] Step 1: Process the dried ginseng flowers into powder, add petroleum ether, and extract by the reflux method. The extraction time is preferably 0.5-2h. After the extraction, the petroleum ether solution is poured out; the volume of the petroleum ether is V 1 (ml): Mass M of dried ginseng flower powder 1 (gram) is preferably (6-50): 1;
[0027]Step 2: add potassium hydroxide, n-hexane, methyl tert-butyl ether, acetonitrile and water to the petroleum ether solution in step 1, and stir and heat; the heating temperature is preferably 90-300 ° C, and the heating time is preferably 0.5-2h, the stirring speed is preferably 100-300rpm; the volume V of the original petroleum ether 1 (mL): volume V of n-hexane 2 (mL): volume V of methyl tert-butyl ether 3 (mL): volume V of acetonitrile 4 (ml): volume of water V 5 (mL): Mass M of Potassium Hydroxide 2...
Embodiment 1
[0032] Process the dried ginseng flower into powder, weigh 5g, add 100mL petroleum ether, extract by reflux method, extract for 0.5 hour, filter after the extraction, the volume of petroleum ether extract is 91mL, take the 91mL petroleum ether solution, add 2g hydrogen Potassium oxide, 80 mL of n-hexane, 80 mL of methyl tert-butyl ether, 100 mL of acetonitrile and 100 mL of water were heated with stirring at a temperature of 100° C., the heating time was 0.5 hour, the stirring speed was 100 rpm, and after the heating was completed, let stand for 60 min, and take The petroleum ether layer was concentrated under reduced pressure to obtain ginseng flower extract.
[0033] The relative contents of Stigmasterol (stigmasterol), γ-Sitosterol (γ-sitosterol), Stigmast-7-en-3-ol, (3β, 5α)- were determined by gas chromatography and mass spectrometry. Gas chromatograph and mass spectrometer: American Thermo-Scientific ITQ900.
[0034] Mass spectrometry parameters: positive ion mode; radi...
Embodiment 2
[0043] Process the dried ginseng flower into powder, weigh 5g, add 150mL petroleum ether, extract by reflux method, extract for 1.0 hours, filter after the extraction, the volume of petroleum ether extract is 134mL, take the 134mL petroleum ether solution, add 3.5g Potassium hydroxide, 150 mL of n-hexane, 150 mL of methyl tert-butyl ether, 160 mL of acetonitrile and 200 mL of water, were heated with stirring, the temperature was 150 °C, the heating time was 1.0 hour, the stirring speed was 150 rpm, and after heating, let stand for 180 min, The petroleum ether layer was taken and concentrated under reduced pressure to obtain ginseng flower extract.
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