On-off total saponin as well as its extracting method and application
An extraction method and technology for total saponins, which are applied in the field of extraction of discontinuous total saponins, can solve problems such as less research on pharmacological effects, and achieve the effects of facilitating sample quality control and evaluation and clear components.
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Embodiment 1
[0036] Take 1 kg of Dipsacus, extract twice with 8L 60% ethanol, reflux for 2 hours each time, combine the extracts, concentrate under reduced pressure, recover the ethanol until there is no alcohol smell, add water to dilute to a liquid containing 0.6g of medicinal materials per ml, and let it stand for 24 hour, take the supernatant, and use a hollow fiber ultrafiltration with a molecular weight of 10,000 to obtain a filtrate. Add the filtrate to the chromatographic column of 1.2kgD101 macroporous resin, and after cyclic adsorption for 3 times, use 4L 0.5% NaOH to elute, then wash with 5.5L water until nearly neutral, discard the first two eluents, and then use 6L Rinse with 60% ethanol, collect the 60% ethanol eluate, recover the ethanol under reduced pressure, concentrate and dry to obtain 102 grams of total saponins in Dipsacus, with a total saponin content of 85.7%, of which XDS-VI content is 60.8%.
Embodiment 2
[0038] Take 1 kg of Dipsacus, extract twice with 6L 80% ethanol, reflux for 2 hours each time, combine the extracts, concentrate under reduced pressure, recover the ethanol until there is no alcohol smell, add water to dilute to a liquid containing 1.0g of medicinal materials per ml, and let it stand for 36 hours, take the supernatant, and use Al 2 o 3 Ceramic membrane microfiltration to obtain the filtrate. Add the filtrate to the chromatographic column of 1.0kg AB-8 macroporous resin, after cyclic adsorption twice, elute with 3L of 0.5% NaOH, rinse with 5L of water, discard the eluent, and rinse with 5L of 80% ethanol , collect the eluate, recover ethanol under reduced pressure, concentrate and dry to obtain 98 grams of total saponins of Dipsacus cuspidatum, with a total saponin content of 78.3% and an XDS-VI content of 53.2%.
Embodiment 3
[0040] Take 1 kg of Dipsacus, extract twice with 6L 90% ethanol, reflux for 3 hours each time, combine the extracts, concentrate under reduced pressure, recover the ethanol until there is no alcohol smell, add water to dilute to a liquid containing 1.2g of medicinal materials per ml, and let it stand for 36 hour, take the supernatant, and filter it with a 0.45 μm filter membrane to obtain the filtrate. Add the filtrate to the chromatographic column of 1.2kg D201 macroporous resin. 3 Elution, then rinse with 6L of water, discard the eluate, then rinse with 4L of 95% ethanol, collect the eluate, recover ethanol under reduced pressure, concentrate and dry to obtain 95 grams of total saponins in Dipsacus, with a total saponin content of 85.8% , XDS-VI content 71.9%.
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