Method for extracting and separating kaempoferitrin from light-leaf ligustrum sinense
A technology for kaempferigen and crude kaempferrin, applied in chemical instruments and methods, preparation of sugar derivatives, sugar derivatives, etc., can solve the problems of few chemical components, and extraction of kaempferrin has not been found, and achieve a simple extraction method , the method is feasible, and the effect of enriching raw materials
Inactive Publication Date: 2008-06-11
XI AN JIAOTONG UNIV
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[0004] According to the literature search done by the applicant, there are very few studies on the chemical constituents of Waxa glabra at home and abroad, and no relevant reports have been found on the process research of extracting kaempferol from Waxa glabra
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[0020] see figure 1 , the method of the present invention comprises the following steps:
[0021] Take the powder of the flowers and leaves of S. glabrata, extract with water three times, combine the extracts, and concentrate.
[0022] Add ethanol to the concentrated solution until the ethanol content in the concentrated solution is 80%, stand for 48 hours, filter with suction and discard the precipitate, dissolve the filtrate with 40% ethanol after reducing pressure to recover the solvent, and stand. At this time, crystals were precipitated, which were identified by polyamide thin film chromatography, and the crystals were not kaempferin, so they were discarded.
[0023] After recovering the solvent from the mother liquor under reduced pressure, heat and extract it with n-butanol 4 times, in a water bath at 100°C for 15 minutes each time, combine the n-butanol extracts, recover n-butanol under reduced pressure, and obtain the filtrate containing kaempferin; The filtrate of ...
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This invention discloses resurrection lily rhizome glycoside distilling from light leaf small la tree. The tree flower and leaf powder is got and distilled by water three times, then extracting solution is united and concentrated, ethanol is added until its content reaches 80 percent, filtrated and precipitation is abandoned. The filtrate is decompressed and the solvent is recovered, then 40 percent ethanol solvent is used to dissolve it, staying and filtrating after recrystallization, and the crystallization is abandoned. The mother liquor is decompressed and distilled by normal butyl alcohol 4 times, the normal butyl alcohol liquor is united, and solvent is recovered to few quantity, staying and recrystallization, and that is crude resurrection lily rhizome glycoside. It is recrystalled by ethanol to get yellow needle crystal, and that is the resurrection lily rhizome glycoside. This invention is simple and practical, and its material cost is cheap, its resurrection lily rhizome glycoside content is tested between 2.86 mg / g and 9.25mg / g, it can provide abundant material and simpole distillation method for resurrection lily rhizome glycoside and its derivative.
Description
technical field [0001] The invention relates to a method for extracting and separating active ingredients of natural plants in the pharmaceutical industry, and in particular to a method for extracting and separating kaempferrin from S. glabrata. Background technique [0002] L. sinense Lour var nitidum Ruhd is a plant of Oleaceae Oleaceae Ligustrum Linn. It is an evergreen shrub and is recorded in "Dictionary of Chinese Medicine" [1] Zhong, also known as water white wax, has a flat taste and slightly bitter taste, and has the functions of clearing heat and reducing fire, and is used to treat hematemesis, toothache, aphtha, sore throat, damp heat, yellow water to nourish sores, etc. The research on chemical composition shows that it mainly contains alkanes, higher fatty alcohols, steroids, triterpenoids and flavonoids, among which the content of kaempferol is relatively high. [0003] Kaempferitrin is a flavonoid compound (C 27 h 30 o 14 , molecular weight 578), yellow ne...
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IPC IPC(8): C07H1/08C07H17/07
Inventor 王军宪陈新季张元媛王婷
Owner XI AN JIAOTONG UNIV