Preparation method of dianthus chinensis magnolol
A technology of magnolol and dianthus, which is applied in the field of separation and preparation of dianthus magnolol, can solve the problems such as the preparation method of high-content dianthus magnolol, and achieve the effects of short preparation cycle, serious pollution and high yield
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Embodiment 1
[0021] Get the stem bark of Magnolia officinalis, after crushing, weigh 1kg, add 5 times of 80% ethanol solution, the extraction voltage is 140V, the extraction time is 90s, carry out flash extraction, filter to obtain the extract, the extract is passed through a molecular weight cut-off of 3000 ultrafiltration membrane ultrafiltration and nanofiltration membrane concentration with a molecular weight cut-off of 500, the operating pressure is 0.8MPa, the membrane concentrate is concentrated and dried under reduced pressure to obtain a crude extract; high-speed countercurrent chromatography is used to separate and purify Dianthus in the crude extract Magnolol, with a volume ratio of 5:4:6:2 petroleum ether-ethyl acetate-methanol-water as a two-phase solvent system, the upper phase is filled with a high-speed countercurrent chromatographic column as the stationary phase, the host is rotated, and pumped into the lower phase to make The mobile phase, the crude extract dissolved in t...
Embodiment 2
[0023] Get the stem bark of Magnolia officinalis, after pulverization, weigh 1kg, add 12 times of 80% ethanol solution, the extraction voltage is 140V, the extraction time is 80s, carry out flash extraction, filter to obtain the extract, the extract is passed through a molecular weight cut-off of 1000 ultrafiltration membrane ultrafiltration and nanofiltration membrane concentration with a molecular weight cut-off of 500, the operating pressure is 1.8MPa, the membrane concentrate is concentrated and dried under reduced pressure to obtain a crude extract; high-speed countercurrent chromatography is used to separate and purify Dianthus in the crude extract Magnolol, with a volume ratio of 7:3:4:3 petroleum ether-ethyl acetate-methanol-water as a two-phase solvent system, the upper phase is filled with a high-speed countercurrent chromatographic column as the stationary phase, the host is rotated, and pumped into the lower phase to make The mobile phase, the crude extract dissolve...
Embodiment 3
[0025] Get the stem bark of Magnolia officinalis, after pulverization, weigh 2kg, add 10 times of 80% ethanol solution, the extraction voltage is 140V, the extraction time is 90s, carry out flash extraction, filter to obtain the extract, the extract is passed through a molecular weight cut-off of 1000 ultrafiltration membrane ultrafiltration and nanofiltration membrane concentration with a molecular weight cut-off of 300, the operating pressure is 2.0MPa, the membrane concentrate is concentrated and dried under reduced pressure to obtain a crude extract; high-speed countercurrent chromatography is used to separate and purify Dianthus in the crude extract Magnolol, with a volume ratio of 6:4:6:3 petroleum ether-ethyl acetate-methanol-water as a two-phase solvent system, the upper phase is filled with a high-speed countercurrent chromatographic column as the stationary phase, the host is rotated, and pumped into the lower phase to make The mobile phase, the crude extract dissolve...
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