Ursolic acid extracting method from privet leaf

A technology of privet leaves and ursolic acid, applied in the direction of steroids, organic chemistry, etc., can solve the problems of complex ursolic acid process and high cost, and achieve the effect of low cost, convenient operation and abundant resources

Inactive Publication Date: 2004-11-10
中国科学院武汉植物研究所 +1
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Problems solved by technology

Now the process of chemically synthesizing ur

Method used

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Embodiment Construction

[0011] 1. Add 1 kg of dried privet leaves to the extraction tank, add 20 kg of water, boil for 45 minutes, filter off the aqueous solution, repeat this step 3 times except "add 1 kg of dried privet leaves to the extraction tank";

[0012] 2. Add 6kg of 30% ethanol to the extraction tank, heat and reflux for 2 hours, filter the liquid in the extraction tank to the concentration tank under reduced pressure, repeat this step twice, and recover the ethanol for use;

[0013] 3. Add 6kg of 85% 7 alcohol to the extraction tank, heat and reflux for 1 hour, filter the liquid in the extraction tank to the concentration tank under reduced pressure, repeat this step twice, concentrate the filtrate to obtain ethanol extract, and recover the ethanol for use;

[0014] 4. Add 0.5kg85% ethanol, add 0.03kg activated carbon to the concentration tank of the ethanol extract, heat and reflux for 1 hour, filter under reduced pressure at 55°C to obtain the filtrate, repeat this step except "add 0.5kg8...

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Abstract

The invention discloses a process for extracting ursolic acid from ligustrum lucidum leaves comprising the steps of, A. boiling ligustrum lucidum leaves and waer in an extraction jar, filtering water solution, B. filtering through decompression, C. charging high solubility ethanol and heating for backflow with ligustrum lucidum leaves, B. filtering through decompression to obtain filter liquor, watering to adjust the alcohol concentration of the filter liquor, E. heating the adjusted filter liquor for inverse flow, cooling down, filtering, drying the filtering sediment to obtain the ursolic acid product. The invention realizes simple process and easiness in operation. The ursolic acid prepared can be used as the raw material for making medicament for reducing blood fat and treating cardiovascular diseases.

Description

technical field [0001] The invention relates to the extraction of ursolic acid from privet leaves, and more specifically relates to a method for extracting ursolic acid from privet leaves. Background technique [0002] Ursolic acid, also known as ursolic acid, belongs to triterpenoids. It is widely distributed in nature, for example, it exists in the leaves and fruits of bearberry of Azaleaceae, in the leaves of Paulownia tomentosa of Scrophulariaceae, and in the leaves of Ligustrum lucidum of Oleaceae. Ursolic acid has a wide range of biological effects, and it has obvious stabilizing and cooling effects on the central nervous system; it has antibacterial activity against G+ and G- bacteria and yeast in vitro. In addition, it also has anti-diabetic, anti-ulcer and blood-lipid-lowering effects. In recent years, it has been found that ursolic acid not only resists various carcinogens and carcinogens, but also inhibits the growth of various malignant ...

Claims

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Application Information

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IPC IPC(8): C07J63/00
Inventor 袁晓袁萍周东斌谢志坚陈友丽何志祥吴建辉
Owner 中国科学院武汉植物研究所
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