Preparation method of licorice extract of bulk drug for livestock

A technology of licorice extract and API, applied in the direction of steroids, organic chemistry, etc., can solve problems such as unreported

Inactive Publication Date: 2009-12-23
北京九草堂药物研究院有限公司
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Problems solved by technology

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Method used

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example 2

[0011] Example 2, the hydrolysis of glycyrrhizic acid monoammonium salt obtains the extraction method of glycyrrhetinic acid

[0012] 1. Preparation of monopotassium glycyrrhizinate

[0013] Soak 1000g of licorice coarse powder with 14 times the amount of 0.5% ammonia water for 3 times, overnight for the first time; concentrate the filtrate to 1 / 5 of the original volume, add concentrated sulfuric acid to the filtrate to PH2~3, let stand, precipitate overnight, filter, and wash the precipitate 3 times , dry below 60°C to obtain 60g of crude glycyrrhizic acid; add 4 to 10 times the amount of absolute ethanol, reflux 3 times, the first time for 3 hours, and the last two times for 2 hours, filter, combine the filtrates, cool, and adjust the filtrate to PH7~ with 20% KOH 8. Stand still to precipitate a precipitate, overnight, filter, wash the precipitate with a little alcohol, and dry at room temperature to obtain 40g of tripotassium glycyrrhizinate; then dissolve and decrystallize...

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Abstract

The invention relates to a preparation method of glycyrrhetinic acid of a bulk drug for livestock, in particular to a method for extracting effective components from a plant medicine to prepare the bulk drug of a medicine for livestock, particularly a preparation method for extracting purified glycyrrhetinic acid from licorice, which is used for preventing and treating the disease of the livestock. The invention starts off from the feasibility of actual production, develops the preparation and the method thereof of the glycyrrhetinic acid of the bulk drug for the livestock, is widely applied to the nuisance-free breeding industry, promotes the production of nuisance-free foods and guarantees the safety of the foods, and the purity of the glycyrrhetinic acid is high. The invention has reasonable technology, strong production operability and large value of practical application, is economical and practical and can hopefully bring favorable economic benefit and social benefit, and the purity of a product can reach more than 90%.

Description

technical field [0001] The invention relates to a raw material medicine widely used for preventing and treating diseases of poultry and animals, which is applied in pollution-free breeding industry to ensure food safety. Specifically, it relates to a method for preparing a raw material medicine of veterinary medicines by extracting active ingredients from herbal medicines, and is used for preventing and treating diseases of poultry and animals. Especially the preparation method of extracting and purifying glycyrrhetinic acid from licorice. Background technique [0002] Licorice is the root and rhizome of licorice leguminous plant licorice, bloated licorice or glabra. It is the most widely used traditional Chinese medicine with a long history, used in medicine, tobacco, food and other fields. In addition, licorice powder and its extract are also used as animal feed. Modern pharmacological studies have shown that glycyrrhetinic acid (GA) is one of the active ingredients of li...

Claims

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Application Information

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IPC IPC(8): C07J63/00
Inventor 许冠英王宏伟白景玲
Owner 北京九草堂药物研究院有限公司
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