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Process for extracting licoflavone, lycyrrhizic acid and licopolyose from liquorice root

A technology of licorice flavonoids and licorice polysaccharide, which is applied in the fields of medicine and chemical industry, can solve the problems of unreasonable division, loss, and unreasonable division and extraction method of components, and achieves the effects of improving yield and improving purity.

Inactive Publication Date: 2002-07-24
NINGXIA UNIVERSITY
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Problems solved by technology

[0002] Licorice flavonoids, glycyrrhizic acid, and licorice polysaccharides are the main pharmacologically active ingredients in licorice. The existing extraction technology is intermittent. Usually, a set of systems is used to simply extract glycyrrhizic acid or extract licorice flavonoids or licorice polysaccharides from the residue and waste liquid after extraction. , the Chinese patent "a kind of licorice cream and its production process" (CN1144105) discloses a method for extracting glycyrrhizin from licorice and then extracting licorice flavonoids from the residue. As far as the chemical structure of each component in licorice is concerned, unreasonable segmentation and extraction methods are used, resulting in some strong and effective components with low content being unreasonably divided, destroyed and lost, so that the increasingly scarce precious wild licorice resources cannot be fully recovered. use of

Method used

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Embodiment Construction

[0010] Add 100 grams of licorice powder in a 1000ml three-necked bottle, add 600ml of 90% (weight) ethanol, heat and stir at 60°-70°C for 5 hours, vacuum filter, wash, and repeat the extraction of the residue once more, combine the filtrate and washing solution, Heat and concentrate to 50ml, recover ethanol, add 500ml of water to the concentrated solution, precipitate out, filter again, and vacuum-dry the filter cake at 80°C to obtain 12 grams of crude flavonoids, with a content of 40.06% (by weight), to obtain residue I, which is used for the next step process.

[0011] Swipe off the ethanol from the residue I, put it in a 1500ml beaker, add 1000ml of 0.5% (weight) dilute ammonia water, stir and soak intermittently for 10 hours, filter, wash, and repeat the extraction of the filter residue twice, combine the filtrate and lotion, add sulfuric acid to neutralize When the pH value is 2, a precipitate is precipitated, and after standing, the supernatant is sucked off, the precipi...

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Abstract

A process for extracting licoflavone, glycyrrhizic acid and licopolyose from licorice root incldues such steps as extracting licoflavone using alcohol, extracting glycyrrhizic acid from residual dregs using alkaline clean water, boiling its residual dregs in clean water, and alcohol separating to prepare licopolyose. Its advantages are continuous extraction and the highest utilization rate.

Description

technical field [0001] The invention belongs to the fields of medicine and chemical industry, in particular to a method for continuously extracting licorice flavonoids, glycyrrhizic acid and licorice polysaccharide from licorice. Background technique [0002] Licorice flavonoids, glycyrrhizic acid, and licorice polysaccharides are the main pharmacologically active ingredients in licorice. The existing extraction technology is intermittent. Usually, a set of systems is used to simply extract glycyrrhizic acid or extract licorice flavonoids or licorice polysaccharides from the residue and waste liquid after extraction. , the Chinese patent "a kind of licorice cream and its production process" (CN1144105) discloses a method for extracting glycyrrhizin from licorice and then extracting licorice flavonoids from the residue. As far as the chemical structure of each component in licorice is concerned, unreasonable segmentation and extraction methods are used, resulting in some stro...

Claims

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Application Information

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IPC IPC(8): C07J63/00C08B37/00
Inventor 刘钢匡军
Owner NINGXIA UNIVERSITY
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