Method for extracting, separating and purifying three kinds of coumarin from dahurian angelica root
A technology for separation and purification of coumarin, applied in the direction of organic chemistry, etc., can solve the problems of solvent system selection difficulties, lack of theoretical guidance, cumbersome operation process, etc., and achieve the effect of improving extraction efficiency, simple method operation, and high purity
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[0033] Examples: The method for extracting, separating and purifying three coumarins from Angelica dahurica, its steps are:
[0034] (1) Extraction of Angelica dahurica coumarin: pulverize Angelica dahurica medicinal materials, heat and extract 3 times with 10 times the amount of petroleum ether, 2h each time, filter, combine the extracts and concentrate under reduced pressure to obtain a crude extract.
[0035] (2) Separation and analysis of Angelica dahurica coumarin: The composition of the crude extract was separated and analyzed by an analytical high performance liquid chromatograph, the chromatographic column was C 18 Column (250mm×4.6mmI.D., 5μm), mobile phase is methanol-water (67:33, V / V); flow rate is 1.0mL / min, detection wavelength is 220nm, column temperature is room temperature.
[0036] (3) Separation and purification of Angelica dahurica coumarin: Use a semi-preparative high performance liquid chromatography to separate and purify the components in the crude extract, t...
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