Application of active parts of gallnut in preparing anti-ulcerative colitis medicine
A kind of technology of effective parts, gallium, applied in the field of preparation of medicines for the treatment of anti-ulcerative colitis
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Embodiment 1
[0015] a. Take the dried gallic medicinal material and crush it, pass it through a No. 2 sieve, weigh 100g of the medicinal material powder, add water to extract 3 times, add 5 times the amount of water each time, and extract for 20 minutes;
[0016] b. Concentrate the extract under reduced pressure to 500ml, extract the concentrated solution with ether until the ether layer is clarified, and discard the ether layer;
[0017] c. Extract the part of the water layer with ethyl acetate, recover the ethyl acetate, and dry it in vacuum at a temperature of 45° C. to obtain 30% effective parts of galls;
[0018] d. Use a gel chromatography column (model: Sephadex LH-20) to separate the chemical components of the effective part of gallia obtained in step c, and carry out gradient elution with water and 20%-100% methanol to obtain 40%-70 % methanol eluent extract Ⅰ and 70%-100% methanol eluent extract Ⅱ, and then the extract Ⅰ and Ⅱ were separated with a model: MCI-GEL CHP-20P gel chro...
Embodiment 2
[0021] a. Take the dried gallic medicinal material and pulverize it, pass through a No. 2 sieve, weigh 100g of the medicinal material powder, add water to extract 3 times, add 10 times the amount of water each time, and extract for 50 minutes;
[0022] b. Concentrate the extract under reduced pressure to 800ml, extract the concentrated solution with ether until the ether layer is clarified, and discard the ether layer;
[0023] c. Extract the part of the water layer with ethyl acetate, recover the ethyl acetate, and dry it in vacuum at a temperature of 65° C. to obtain 45% of the effective part of the galls;
[0024] d. Use a gel chromatography column (model: Sephadex LH-20) to separate the chemical components of the effective part of gallia obtained in step c, and carry out gradient elution with water and 20%-100% methanol to obtain 40%-70 % methanol eluent extract Ⅰ and 70%-100% methanol eluent extract Ⅱ, and then the extract Ⅰ and Ⅱ were separated with a model: MCI-GEL CHP-...
Embodiment 3
[0027] a. Take the dried gallic medicinal material and crush it, pass it through a No. 2 sieve, weigh 100g of medicinal material powder, add water to extract 3 times, add 15 times the amount of water each time, and extract for 120min;
[0028] b. Concentrate the extract under reduced pressure to 1500ml, extract the concentrated solution with ether until the ether layer is clarified, and discard the ether layer;
[0029] c. Extract the water layer with ethyl acetate, recover the ethyl acetate, and vacuum dry at a temperature of 90°C to obtain 60% of the effective parts of the galls;
[0030]d. Use a gel chromatography column (model: Sephadex LH-20) to separate the chemical components of the effective part of gallia obtained in step c, and carry out gradient elution with water and 20%-100% methanol to obtain 40%-70 % methanol eluent extract Ⅰ and 70%-100% methanol eluent extract Ⅱ, and then the extract Ⅰ and Ⅱ were separated with a model: MCI-GEL CHP-20P gel chromatography colum...
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