Solanum nigrum extract, preparation method and use thereof
A technology of extract and nightshade, applied in the field of nightshade extract, its preparation and its pharmaceutical application, can solve the problems of inability to meet high-efficiency pharmaceutical compositions, low content of active ingredients, restricted use, etc., and achieves strong production practicability, The effect of high content of active ingredients and less environmental pollution
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Embodiment 1
[0042] Preparation of nightshade extract:
[0043] (1) 400g of Solanum nigrum, add 2000ml of 90% ethanol, and reflux extraction 3 times, each time for 1.5 hours;
[0044] (2) Recover ethanol from the extract until there is no alcohol smell, and obtain about 300ml of concentrated solution, extract with petroleum ether 3 times, and each time the dosage is 300ml;
[0045] (3) The concentrated solution is processed into a H+ type HD-8 strong-acid cation exchange resin (Shanghai Huazhen Science and Technology Co., Ltd.) with 400ml for column adsorption, followed by water elution until the effluent is nearly colorless, 40% ethanol 400ml elution, 800ml of 90% ethanol for elution, ethanol containing ammonia (90% ethanol: 25% ammonia is 10:1) 1200ml for elution;
[0046] (4) collect the eluted part containing ammonia water ethanol, reclaim ethanol;
[0047] (5) Centrifuge the concentrated solution at 5000rpm for 10 minutes, discard the supernatant;
[0048](6) The precipitate was wa...
Embodiment 2
[0051] Preparation of nightshade extract:
[0052] (1) Solanum nigrum fruit 1000g, add 90% ethanol 5000ml, reflux extraction 3 times, each 1.5 hours;
[0053] (2) The extract is recovered from ethanol until there is no alcohol smell, and about 800ml of concentrated solution is obtained;
[0054] (3) The concentrated solution is processed into a H+ type HD-8 strong-acid cation exchange resin (Shanghai Huazhen Technology Co., Ltd.) with 1000ml for column adsorption, followed by water elution until the effluent is nearly colorless, 40% ethanol 1000ml elution, 90% ethanol 2000ml elution, ethanol containing ammonia (90% ethanol: 25% ammonia water is 10:1) 3000ml elution;
[0055] (4) collect the eluted part containing ammonia water ethanol, reclaim ethanol;
[0056] (5) Centrifuge the concentrated solution at 5000rpm for 10 minutes, discard the supernatant;
[0057] (6) The precipitate was washed with a small amount of water, centrifuged at 5000 rpm for 10 minutes, washed twice ...
Embodiment 3
[0060] Preparation of nightshade extract:
[0061] (1) 400g of Solanum nigrum, add 2000ml of 90% ethanol, and ultrasonically extract 3 times, each time for 1.5 hours;
[0062] (2) Recover ethanol from the extract until there is no alcohol smell, and obtain about 300ml of concentrated solution, extract with petroleum ether 3 times, and each time the dosage is 300ml;
[0063] (3) The concentrated solution is processed into a H+ type HD-8 strong-acid cation exchange resin (Shanghai Huazhen Science and Technology Co., Ltd.) with 400ml for column adsorption, followed by water elution until the effluent is nearly colorless, 40% ethanol 400ml elution, 800ml of 90% ethanol for elution, 1200ml of 80% ethanol containing 0.1% sodium hydroxide;
[0064] (4) collect the ethanol elution part containing sodium hydroxide, reclaim ethanol;
[0065] (5) Centrifuge the concentrated solution at 5000rpm for 10 minutes, discard the supernatant;
[0066] (6) Wash the precipitate with a small amou...
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