Solanum nigrum extract, preparation method and use thereof
An extract and technology of Solanum nigrum, applied in the field of Solanum nigrum extract, its preparation and its medicinal application, can solve the problems of high-efficiency pharmaceutical compositions, low content of active ingredients, and limited use, etc., and achieve strong production practicability, The effect of high content of active ingredients and low environmental pollution
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Embodiment 1
[0042] Preparation of nightshade extract:
[0043] (1) 400g whole Solanum herb, add 2000ml 90% ethanol, reflux and extract 3 times, 1.5 hours each time;
[0044] (2) Recover ethanol from the extract until it has no alcohol taste, and obtain a concentrated solution of about 300ml. Petroleum ether extracts 3 times, with a dosage of 300ml each time;
[0045] (3) The concentrated solution is treated with 400ml of HD-8 strong acid cation exchange resin (Shanghai Huazhen Technology Co., Ltd.) which is processed into H+ type for column adsorption, and then eluted with water until the effluent is nearly colorless, and eluted with 400ml of 40% ethanol. Elute with 800ml of 90% ethanol, elution with 1200ml of ammonia-containing ethanol (90% ethanol: 25% ammonia is 10:1);
[0046] (4) Collect the eluted part of ethanol containing ammonia and recover the ethanol;
[0047] (5) Centrifuge the concentrated solution at 5000 rpm for 10 minutes, and discard the supernatant;
[0048](6) Wash the prec...
Embodiment 2
[0051] Preparation of nightshade extract:
[0052] (1) 1000g of nightshade fruit, add 5000ml of 90% ethanol, reflux and extract 3 times, 1.5 hours each time;
[0053] (2) Recover ethanol from the extract until it has no alcohol taste, and get about 800ml of concentrated solution;
[0054] (3) The concentrated solution is treated with 1000ml of HD-8 strong acid cation exchange resin (Shanghai Huazhen Technology Co., Ltd.) which is processed into H+ type, and then it is eluted with water until the effluent is nearly colorless, and eluted with 1000ml of 40% ethanol. Elute with 2000ml of 90% ethanol, elution with 3000ml of ammonia-containing ethanol (90% ethanol: 25% ammonia water is 10:1);
[0055] (4) Collect the eluted part of ethanol containing ammonia and recover ethanol;
[0056] (5) Centrifuge the concentrated solution at 5000 rpm for 10 minutes, and discard the supernatant;
[0057] (6) Wash the precipitate with a small amount of water, centrifuge at 5000 rpm for 10 minutes, w...
Embodiment 3
[0060] Preparation of nightshade extract:
[0061] (1) 400g of whole Solanum herb, add 2000ml of 90% ethanol, and ultrasonically extract 3 times, 1.5 hours each time;
[0062] (2) Recover ethanol from the extract liquid until it has no alcohol taste, and obtain a concentrated liquid of about 300ml, which is extracted 3 times with petroleum ether, and the dosage is 300ml each time;
[0063] (3) The concentrated solution is treated with 400ml of HD-8 strong acid cation exchange resin (Shanghai Huazhen Technology Co., Ltd.) which is processed into H+ type for column adsorption, eluted with water until the effluent is nearly colorless, and eluted with 400ml of 40% ethanol. Elution with 800ml of 90% ethanol, 1200ml of 80% ethanol with 0.1% sodium hydroxide;
[0064] (4) Collect the ethanol eluted part containing sodium hydroxide and recover the ethanol;
[0065] (5) Centrifuge the concentrated solution at 5000 rpm for 10 minutes, and discard the supernatant;
[0066] (6) Wash the preci...
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