Application of aleuritopteris argentea extract in preparation of medicines for treating cardiovascular and cerebrovascular diseases
A cardiovascular and cerebrovascular disease and extract technology is applied in the application field of Tongjingcao extract in the preparation of drugs for treating cardiovascular and cerebrovascular diseases, and can solve the problems of obstruction or rupture, large side effects of western medicines, and insignificant effects of traditional Chinese medicines, etc. To achieve the effect of improving utilization rate and obvious therapeutic effect
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Embodiment 1
[0020] The preparation method of the Herb Tongjing extract is as follows:
[0021] (1) Take the grass leaves as raw materials, wash, dry, crush and sieve, put them in the extraction tank, add water and ethanol, the mass ratio of material to liquid is 1:8, and extract under pressure for 4 times at 100°C , the pressure is controlled at 12 atmospheres, each extraction is 4h, the extract is filtered, combined, ethanol is recovered, concentrated, and dried to obtain extract A;
[0022] (2) Soak the extract A in 8 times of acetone and reflux 5 times, place it in an ice bath, filter and concentrate, wait for the acetone to evaporate to dryness, freeze-dry to obtain extract B;
[0023] (3) Take the above-mentioned extract B and dissolve it in water, add a mixed solution of chloroform and n-butanol with a volume ratio of 4:1, stir and leave to stand at low temperature for stratification, and repeat the operation of the upper aqueous phase for 4 times, and use a molecular weight cut-off...
Embodiment 2
[0027] The preparation of embodiment 2 Tongjingcao extract
[0028] (1) Take the grass leaves as raw materials, wash, dry, crush and sieve, put them in the extraction tank, add water and ethanol, the mass ratio of material to liquid is 1:10, and extract under pressure for 4 times at 110°C , the pressure is controlled at 11 atmospheres, each extraction is 3.5h, the extract is filtered, combined, ethanol is recovered, concentrated and dried to obtain extract A;
[0029] (2) Soak the extract A in 14 times of n-hexane and reflux 4 times, place it in an ice bath, filter and concentrate, wait for the n-hexane to evaporate to dryness, freeze-dry to obtain extract B;
[0030] (3) Take the above-mentioned extract B and dissolve it in water, add a mixed solution of chloroform and n-butanol with a volume ratio of 4:1, leave it to stand at low temperature after stirring, and repeat the operation of the upper aqueous phase for 5 times. Dialyze with a dialysis membrane of ~10,000 for 2 day...
Embodiment 3
[0035] (1) Take Tongjing grass leaves as raw materials, after cleaning, drying, crushing and sieving, put them in the extraction tank, add water and ethanol, the mass ratio of material to liquid is 1:12, and extract under pressure for 3 times at 120°C , the pressure is controlled at 10 atmospheres, each extraction is 4h, the extract is filtered, combined, ethanol is recovered, concentrated, and dried to obtain extract A;
[0036] (2) Soak the extract A in 20 times of diethyl ether and reflux 5 times, place it in an ice bath, filter and concentrate, wait for the diethyl ether to evaporate to dryness, and freeze-dry to obtain extract B;
[0037] (3) Take the above-mentioned extract B and dissolve it in water, add a mixed solution of chloroform and n-butanol with a volume ratio of 4:1, stir and let stand at low temperature for stratification, repeat the operation of the upper aqueous phase for 7 times, and use a molecular weight cut-off of 8000 Dialyze with a dialysis membrane of...
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