Preparation for clinacanthus nutans extract and application thereof in anti-tumor aspect
A technique of extracting the herb and its extracts, which are applied in the direction of antineoplastic drugs, medical preparations containing active ingredients, and drug combinations, etc.
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Embodiment 1
[0017] Dried the stems of Herba Youtun, crushed and sieved, the powder was extracted with 95% ethanol at room temperature for 3 times, each time for 6 days, the extracts were combined, filtered, concentrated under reduced pressure to recover ethanol to obtain ethanol crude extract, the ethanol crude extract Add 2L of distilled water to dilute, and then extract 5 times with an equal volume of petroleum ether to obtain a petroleum ether extract. Extract the remaining aqueous solution with an equal volume of ethyl acetate until the organic phase is nearly colorless to obtain an ethyl acetate extract. Extracted 6 times with water-saturated n-butanol to obtain n-butanol extract.
[0018] Separately concentrate the petroleum ether extract, ethyl acetate extract and n-butanol extract under reduced pressure to obtain the extract, and after vacuum drying, the powder obtained is the petroleum ether extract, ethyl acetate extract and n-butanol Extract.
Embodiment 2
[0020] Dry, crush and sieve the leaves of Udon grass, extract the powder with 85% ethanol at room temperature for 4 times, each time for 7 days, combine the extracts, filter, concentrate under reduced pressure and recover ethanol to obtain ethanol crude extract, and ethanol crude extract Add 3L of distilled water to dilute, then extract 4 times with an equal volume of petroleum ether to obtain a petroleum ether extract, extract the remaining aqueous solution with an equal volume of ethyl acetate until the organic phase is nearly colorless, and obtain an ethyl acetate extract, and then refill the remaining aqueous solution. Extract 5 times with water-saturated n-butanol to obtain n-butanol extract.
[0021] Concentrate the petroleum ether extract, ethyl acetate extract and n-butanol extract under reduced pressure respectively to obtain the extract, and after vacuum drying, the powder obtained is the petroleum ether extract, ethyl acetate extract and n-butanol Extract.
Embodiment 3
[0023] Dried the root of Udun grass, crushed and sieved, the powder was extracted with 75% ethanol at room temperature for 4 times, each time for 7 days, the extracts were combined, filtered, concentrated under reduced pressure to recover ethanol to obtain ethanol crude extract, the ethanol crude extract was added to Dilute with 3L of distilled water, and then extract 4 times with an equal volume of petroleum ether to obtain a petroleum ether extract. Extract the remaining aqueous solution with an equal volume of ethyl acetate until the organic phase is nearly colorless to obtain an ethyl acetate extract. The remaining aqueous solution is then water Saturated n-butanol was extracted 5 times to obtain n-butanol extract.
[0024] Concentrate the petroleum ether extract, ethyl acetate extract and n-butanol extract respectively under reduced pressure to obtain the extract, and after vacuum drying, the powder is obtained as Youdun grass root petroleum ether extract, ethyl acetate ex...
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