A kind of method for extracting rutin from Sophora japonica
A technology of Sophora japonica and rutin, which is applied in chemical instruments and methods, preparation of sugar derivatives, production of bulk chemicals, etc., can solve the problems of rutin dissolving in hot water, lower production efficiency, and long time consumption, and achieve effective retention Effects of ingredient content, improved extraction efficiency, and easy operation
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Embodiment 1
[0018] Crush 50g of dried Sophora japonica to 40 mesh, add acid water at 40°C and pH = 4-5, and put in supercritical CO 2 In the extraction device, process at a pressure of 30 MPa and a temperature of 40°C for 20-40 minutes, then use acid water at a temperature of 0-5°C and pH=4-5 to wash twice and then spin dry; add 3 % borax, 1% Na 2 SO 3 and 25 times of 60% ethanol, using sodium bicarbonate to adjust the pH to 9-10, then adding 0.35% Tween 20 and 0.15% OP-15, and ultrasonically extracting at 30kHz and 40°C for 20min in the dark, then Filtrate, keep the filtrate at 40°C in the dark for later use; extract the filter residue once again under the same conditions as above, combine the obtained filtrate with the previous filtrate, add 5% activated carbon to the combined filtrate, stir at 40°C in the dark for 10 minutes, and filter After carbon removal, the filtrate was acidified to pH=3~4, left to stand for 20 minutes, and the crude rutin was obtained by suction filtration; the...
Embodiment 2
[0020] Crush 80g of dried Sophora japonica to 50 mesh, add acid water with temperature of 40°C and pH=4~5, put into supercritical CO 2 In the extraction device, it was treated at a pressure of 30 MPa and a temperature of 40°C for 30 minutes, then washed twice with acid water at a temperature of 4°C and pH = 4-5, and then dried; the dried Sophora japonica granules were added with 4% borax, 1% Na 2 SO 3 and 20 times of 70% ethanol, using sodium bicarbonate to adjust the pH to 9-10, then adding 0.4% Tween 20 and 0.1% OP-15, and ultrasonically extracting at 30kHz and 40°C for 25min in the dark, then Filtrate, keep the filtrate at 40°C in the dark for later use; extract the filter residue once again under the same conditions as above, combine the obtained filtrate with the previous filtrate, add 5% activated carbon to the combined filtrate, stir at 40°C in the dark for 10 minutes, and filter After carbon removal, the filtrate was acidified to pH=3~4, left to stand for 25 minutes,...
Embodiment 3
[0022] Crush 120g of dried Sophora japonica to 50 mesh, add acid water with temperature of 40°C and pH=4~5, put into supercritical CO 2 In the extraction device, treat at a pressure of 30 MPa and a temperature of 40°C for 30 minutes, then wash twice with acid water at a temperature of 0-5°C and pH=4-5, and then spin dry; the dried Sophora japonica granules are added with 3% Borax, 1% Na 2 SO 3 And 30 times of 60-70% ethanol, use sodium bicarbonate to adjust the pH to 9-10, then add 0.45% Tween 20 and 0.05% OP-15, and extract it under the condition of 30kHz and 40℃ in the dark for 25min , then filtered, and the filtrate was kept in the dark at 40°C for later use; the filter residue was extracted once again under the same conditions as above, the obtained filtrate was combined with the previous filtrate, 5% activated carbon was added to the combined filtrate, and stirred for 10 minutes at 40°C in the dark, Acidify the filtrate after carbon removal to pH = 3-4, let it stand for...
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