Extraction method and application of phenanthrene compounds from overground part of Chinese yam
A technology of aerial part and extraction method, which is applied in the field of separation and application of the effective components of the aerial part of yam, and can solve the problems of no research report on hypoglycemia and less research
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Embodiment 1
[0020] Shade-dried 8.5kg of aerial part of yam, crushed, extracted by percolation with ethanol with a volume fraction of 95%, combined extracts, concentrated under reduced pressure to obtain 871.5g of total extract, suspended in 2 times the amount of water, and washed with 5 Double the amount of petroleum ether and ethyl acetate for extraction, the ethyl acetate extract was collected and concentrated under reduced pressure to obtain 100.2 g of ethyl acetate extract. The ethyl acetate extract was subjected to Diaion HP-20 type macroporous adsorption resin column chromatography, eluted with 60% ethanol and 80% ethanol in sequence, and collected 80% ethanol for elution. liquid and concentrated under reduced pressure to obtain 45.7 g of 80% ethanol-eluted product. The product was eluted with 80% ethanol and subjected to normal pressure silica gel column chromatography, using petroleum ether-acetone (volume ratios of 5:1, 3:1, 2:1 and 1:1) and dichloromethane-methanol (volume ratio...
Embodiment 2
[0024] Shade-dried 8.5kg of aerial part of yam, crushed, extracted by percolation with ethanol with a volume fraction of 95%, combined the extracts, concentrated under reduced pressure to obtain 871.5g of total extract, suspended the extract in 2 times the amount of water, and washed with 5 Double the amount of petroleum ether and ethyl acetate for extraction, the ethyl acetate extract was collected and concentrated under reduced pressure to obtain 100.2 g of ethyl acetate extract. The ethyl acetate extract was subjected to Diaion HP-20 type macroporous adsorption resin column chromatography, eluted with 60% ethanol and 80% ethanol in sequence, and collected 80% ethanol for elution. liquid and concentrated under reduced pressure to obtain 45.7 g of 80% ethanol-eluted product. The product was eluted with 80% ethanol and subjected to normal pressure silica gel column chromatography, using petroleum ether-acetone (volume ratios of 5:1, 3:1, 2:1 and 1:1) and dichloromethane-methan...
Embodiment 3
[0027] Shade-dried 8.5kg of aerial part of yam, crushed, extracted by percolation with ethanol with a volume fraction of 95%, combined the extracts, concentrated under reduced pressure to obtain 871.5g of total extract, suspended the extract in 2 times the amount of water, and washed with 5 Double the amount of petroleum ether and ethyl acetate for extraction, the ethyl acetate extract was collected and concentrated under reduced pressure to obtain 100.2 g of ethyl acetate extract. The ethyl acetate extract was subjected to Diaion HP-20 type macroporous adsorption resin column chromatography, eluted with 80% ethanol and 95% ethanol in sequence, and collected 95% ethanol for elution. liquid and concentrated under reduced pressure to obtain 25.0 g of 95% ethanol-eluted product. The product was eluted with 95% ethanol and subjected to normal pressure silica gel column chromatography, using petroleum ether-acetone (volume ratios of 5:1, 3:1, 2:1 and 1:1) and dichloromethane-methan...
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