Method for comprehensively extracting protodioscin and dioscin from dioscorea nipponica
A protodioscin, comprehensive extraction technology, applied in chemical instruments and methods, preparation of steroids, sugar derivatives, etc., to achieve the effect of shortening the process flow, optimizing extraction, and better effect
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Embodiment 1
[0041] (1) extract
[0042] Grinding the raw material of Diodontia to obtain a pulverized product, extracting the pulverized product with methanol in an amount 3 times the mass of the raw material of Chuandilong, the extraction temperature is 95°C, and the extraction time is 2h, 3 times; the extract is obtained.
[0043] (2) concentrated
[0044] Concentrate the obtained extract to obtain an extract with a specific gravity of 1.05; then filter to obtain a filtrate and a precipitate.
[0045] (3) crystallization
[0046] Dissolve the precipitate obtained in step (2) with 2 times the amount of 95% ethanol, filter at a temperature of 35°C, add acetone of 1 / 3 of the volume of the filtrate to the filtrate, place it in an ice bath to crystallize, centrifuge, and dry in vacuum to obtain a white powder. The powder is the dioscin product. The content of the obtained diosgenin was 93.86%, and the recovery rate of the active ingredient was 91%.
[0047] (4) Extraction
[0048] The fil...
Embodiment 2
[0052] (1) extract
[0053] Grinding the raw material of Diortonia chinensis to obtain a pulverized product, and extracting the pulverized product with acetone 5 times the mass of the raw material of Diodranillium, the extraction temperature is 50°C, and the extraction time is 2 hours, twice; to obtain an extract.
[0054] (2) concentrated
[0055] Concentrate the obtained extract to obtain an extract with a specific gravity of 1.15; then filter to obtain a filtrate and a precipitate.
[0056] (3) crystallization
[0057] Dissolve the precipitate obtained in step (2) with 8 times the amount of 95% ethanol, filter at a temperature of 50°C, add chloroform of 1 / 8 of the volume of the filtrate to the filtrate, place it in an ice bath to crystallize, centrifuge, and dry in vacuum to obtain a white powder. The powder is the dioscin product. The obtained diosgenin content was 92.22%, and the recovery rate of active ingredients was 90%.
[0058] (4) Extraction
[0059] The filtra...
Embodiment 3
[0063] (1) extract
[0064] Grind the raw material of Diortonia chinensis to obtain a pulverized product, and extract the pulverized product with 80% ethanol which is 7 times the mass of the raw material of Diodanera, the extraction temperature is 75°C, and the extraction time is 2 hours, twice; to obtain the extract.
[0065] (2) concentrated
[0066] Concentrate the obtained extract to obtain an extract with a specific gravity of 1.12; then filter to obtain a filtrate and a precipitate.
[0067] (3) crystallization
[0068] Dissolve the precipitate obtained in step (2) with 4 times the amount of 95% ethanol, filter at a temperature of 75°C, add acetone of 1 / 5 of the volume of the filtrate to the filtrate, place it in an ice bath to crystallize, centrifuge, and dry in vacuum to obtain a white powder. The powder is the dioscin product. The obtained diosgenin content was 97.54%, and the recovery rate of active ingredients was 92%.
[0069] (4) Extraction
[0070] The filtr...
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