Alcoholic extract of Schisandra chinensis and its application in the preparation of anti-hepatic fibrosis drugs
A technology of schisandra extract and schisandra alcohol, which is applied in the field of medicine
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Embodiment 1
[0039] Example 1: Preparation of Schisandra Alcoholic Extract 1
[0040] (1) Preparation of the extract: after crushing the schisandra medicinal material, put it into an extraction tank, namely 80% ethanol, the extraction temperature is 60° C., the amount of ethanol is 5 times, the number of extractions is 3 times, and the extraction time is 1 hour, and the extracts are combined;
[0041] (2) Refining and concentrating: the above-mentioned extract is filtered and concentrated to an alcohol-free state;
[0042] (3) Ethyl acetate extraction, concentration: the concentrated solution was diluted with water, followed by extraction with ethyl acetate once, the combined extracts were concentrated to a small volume.
[0043] (4) Purification: silica gel sample, fast normal phase column chromatography. The sample volume ratio is 5:1; the sample flow rate is 1ml min -1 ; Adsorption time is 2h; respectively first with water, 15% to remove impurities. Use petroleum ether ethyl acetate ...
Embodiment 2
[0044] Example 2: Preparation of Schisandra Alcoholic Extract 2
[0045] (1) Preparation of extraction liquid: After the schisandra medicinal material is crushed, put it into an extraction tank, that is, 95% ethanol, the extraction temperature is 80° C., the amount of ethanol is 30 times, the number of extractions is 2 times, and the extraction time is 2 hours, and the extraction liquid is combined;
[0046] (2) Refining and concentrating: the above-mentioned extract is filtered and concentrated to an alcohol-free state;
[0047] (3) Ethyl acetate extraction, concentration: the concentrated solution was diluted with water, extracted 5 times with ethyl acetate successively, the extracts were combined and concentrated to a small volume.
[0048] (4) Purification: silica gel sample, fast normal phase column chromatography. The sample volume ratio is 25:1; the sample flow rate is 4ml min -1 ; Adsorption time is 8h; first remove impurities with water and 15%. Use petroleum ether...
Embodiment 3
[0049] Example 3: Therapeutic Effects of Alcoholic Extract of Schisandra Fructus on Common Bile Duct Ligation Liver Fibrosis Model Rats
[0050] Liver fibrosis experiment with common bile duct ligation (Xu Shuyun, Bian Rulian, Chen Xiu. Pharmacological Experimental Methodology, 3rd Edition [M]. Beijing: People's Medical Publishing House, 2002: 807). The specific method is as follows:
[0051] SD rats, male and female, 6-8 weeks old, weighing 200±10 g, were provided by the Experimental Animal Center of the Second Military Medical University of the Chinese People's Liberation Army.
[0052] Breeding room temperature 18-22 ℃, relative humidity 60%-75%, artificial mixed feed feeding.
[0053] Randomly grouped, 10 rats in each group: sham operation group, model group, administration group (Schisandra chinensis alcohol extract 1, 80mg / kg·d), in the sham operation group, only abdominal incision was made, common bile duct was separated, and common bile duct was not performed. Ligate...
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