Method for comprehensively extracting protodioscin and dioscin from dioscorea nipponica
A technology for the comprehensive extraction of protodioscin, applied in chemical instruments and methods, preparation of steroids, sugar derivatives, etc., to achieve the effects of shortened process flow, low production cost, and shortened process
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Embodiment 1
[0040] (1) extraction
[0041] 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.
[0042] (2) concentrated
[0043] Concentrate the obtained extract to obtain an extract with a specific gravity of 1.15; then filter to obtain a filtrate and a precipitate.
[0044] (3) crystallization
[0045] 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 vacuo 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%.
[0046] (4) Extraction
[0047]The filtr...
Embodiment 2
[0051] (1) extraction
[0052] Grinding the raw material of Chuandilong to obtain a pulverized product, extracting the pulverized product with 80% ethanol which is 7 times the mass of the raw material of Chuandilong, the extraction temperature is 75°C, and the extraction time is 2h, twice; to obtain the extract.
[0053] (2) concentrated
[0054] Concentrate the obtained extract to obtain an extract with a specific gravity of 1.12; then filter to obtain a filtrate and a precipitate.
[0055] (3) crystallization
[0056] 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 vacuo 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%.
[0057] (4) Extraction
[0058] The filtrate obt...
Embodiment 3
[0062] (1) extraction
[0063] Grinding the raw material of Diortomonas to obtain a pulverized product, extracting the pulverized product with chloroform of 10 times the mass of the raw material of Dianderos, the extraction temperature is 68°C, the extraction time is 3 hours, and 3 times; the extract is obtained.
[0064] (2) concentrated
[0065] Concentrate the obtained extract to obtain an extract with a specific gravity of 1.12; then filter to obtain a filtrate and a precipitate.
[0066] (3) crystallization
[0067] Dissolve the precipitate obtained in step (2) with 6 times the amount of 95% ethanol, filter at a temperature of 90 ° C, add acetone of 1 / 10 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 is 94.33%, and the recovery rate of active ingredients is 91%.
[0068] (4) Extraction
[0069] The filtrate ...
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