Method for preparing secoisolariciresinol diglucoside and ferulic acid glucoside or ferulic acid glucoside ethyl ester
A technology of flax lignans and glucosides, which is applied in the preparation of sugar derivatives, chemical instruments and methods, sugar derivatives, etc., can solve the problems of no effective separation and large-scale production, and achieve low cost, The process is simple and easy, and the process is stable
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Embodiment 1
[0022] Weigh 200g of degummed dry linseed, add 400g of sodium hydroxide ethanol alkali solution with a pH value of 10, stir and extract in a 60°C water bath for 3 hours, filter, and repeatedly extract the filter residue with the above extract until the extract is colorless, and combine the filtrates . Adjust the filtrate to neutral with hydrochloric acid, concentrate the extract to a weight of 50 g, add 250 ml of water, and repeatedly extract with ethyl acetate until the ethyl acetate phase is colorless, separate the liquids, collect the water phase, and use X- 5 The macroporous resin completely adsorbs SDG and ethyl ferulic acid glucoside, and then adopts water and concentrations of 10v%, 20v%, 30v%, 40v%, 50v%, 60v%, 70v%, 80v%, respectively. 90v% ethanol solution was used as mobile phase for elution, 20v%, 30v% and 40v% ethanol eluents were collected, combined and evaporated to dryness to obtain flax lignans; 70v%, 80v%, 90v% ethanol eluents were collected, combined Evapor...
Embodiment 2
[0024] Weigh 400g of degummed dry linseed, add 1000g of potassium hydroxide ethanol alkali solution with a pH value of 11, stir and extract in a water bath at 40°C for 2.5 hours, filter, and repeatedly extract the filter residue with the above extract until the extract is colorless, and combine the filtrates . Adjust the filtrate to neutral with sulfuric acid, concentrate the extract to a weight of 60g, add 120ml of water, and repeatedly extract with methyl acetate until the methyl acetate phase is colorless, separate the liquids, collect the water phase, and use the collected water phase with AB- 8 The macroporous resin completely adsorbs SDG and ethyl ferulic acid glucoside, and then uses water and concentrations of 10v%, 20v%, 30v%, 40v%, 50v%, 60v%, 70v%, 80v%, respectively. 90v% ethanol solution was used as mobile phase for elution, 20v%, 30v% and 40v% ethanol eluents were collected, combined and evaporated to dryness to obtain flax lignans; 70v%, 80v%, 90v% ethanol eluen...
Embodiment 3
[0026] Weigh 200g of degummed dry linseed, add 1600g of ethanol solution of sodium hydroxide with a pH value of 12, stir and extract in a water bath at 50°C for 2 hours, filter, and repeatedly extract the filter residue with the above extract until the extract is colorless, and combine the filtrates. Adjust the filtrate to neutral with acetic acid, concentrate the extract to a weight of 70g, add 300ml of water, and repeatedly extract with toluene until the toluene phase is colorless, separate the liquids, collect the water phase, and use the collected water phase with AB-8 macroporous resin Completely adsorb SDG and ethyl ferulic acid glucoside, and then use water and ethanol with concentrations of 10v%, 20v%, 30v%, 40v%, 50v%, 60v%, 70v%, 80v%, and 90v% respectively The solution is used as the mobile phase to elute, collect 20v%, 30v% and 40v% ethanol eluents, combine and evaporate to dryness to obtain flax lignans; collect 70v%, 80v%, 90v% ethanol eluents, combine and evapora...
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