Method for separating and purifying methyl p-hydroxybenzoate and 3-indolylformaldehyde from Trichosanthes kirilowii Maxim stem and leaf
A technology for separation and purification of stems and leaves, applied in the field of separation and purification of methyl p-hydroxybenzoate and 3-indole formaldehyde, which can solve the problems of insufficient utilization of Trichosanthes stems and leaves, few research reports on Trichosanthes stems and leaves, and waste of resources and other problems to achieve the effect of saving reagents, short process cycle and prolonging service life
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[0031] Example: The method for separating and purifying methyl p-hydroxybenzoate and 3-indole formaldehyde from stems and leaves of Trichosanthes chinensis, the steps are:
[0032] (1) Preparation of the crude extract from the stems and leaves of Trichosanthes chinensis: after crushing the stems and leaves of Trichosanthes chinensis, heat and reflux extraction with 70% ethanol as solvent for 4 times, combine the extracts, and concentrate under reduced pressure to obtain the crude extract.
[0033] (2) Extraction: Disperse the crude extract of Trichosanthes stems and leaves in water, extract with equal volumes of petroleum ether, ethyl acetate and n-butanol in sequence, and concentrate the layers of petroleum ether, ethyl acetate and n-butanol under reduced pressure respectively to obtain petroleum Ether site, ethyl acetate site and n-butanol site.
[0034] (3) Separation and purification of reverse-phase C18 column: Separation and purification of n-butanol fraction with reve...
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