Application of Arenaria kansuensis Maxim
A unique and versatile technology, applied in the field of anti-hepatic fibrosis extracts, can solve the problems of less patients with secondary liver biopsy, lack of control, and less standardized clinical research
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Embodiment 1
[0034] The preparation method of the target site AS2 of the ethyl acetate extract of Gansu fleas is as follows:
[0035] (1) Dry and pulverize the whole plant of Gansu fleas, after sieving, take 2 kg of powder and extract it with 95% ethanol at room temperature, the ratio of solid to liquid is 1:10, and extract 3 times, each time for 8 hours;
[0036] (2) Combine the extracts, concentrate under reduced pressure to form an extract, dissolve the extract in 2L of water, and extract (2L×3) with petroleum ether, ethyl acetate and n-butanol respectively, and extract 3 times with each extractant. The ethyl acetate extract was concentrated and dried to obtain the ethyl acetate extract;
[0037] (3) The ethyl acetate extract part is processed in C18SPE in stages, first eluted with 60% methanol-water to remove the impurity part AS1, then eluted with 80% methanol-water, and collected 80% methanol-water wash The product is removed to obtain the target site AS2.
[0038] Each part can be...
Embodiment 2
[0041] (1) Dry and pulverize the whole plant of Gansu fleas, and after sieving, take 2kg of the powder and extract it with ethyl acetate, the ratio of solid to liquid is 1:10, and extract 3 times in total, each time for 8 hours;
[0042] (2) The above extract is processed in C18SPE in sections, first eluted with 60% methanol-water, then eluted with 80% methanol-water, and the eluted product of 80% methanol-water is collected to obtain the ethanol extract target site.
Embodiment 3
[0044] The whole plant of Gansu fleas is dried in the shade and crushed. After sieving, take 2kg of the powder and extract it with 95% ethanol at room temperature. The ratio of solid to liquid is 1:10. It is extracted 3 times for 8 hours each time. The extracts are combined and concentrated to obtain ethanol. Extract.
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