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Preparation method of burdock root extract

A technology of root extract and burdock, which is applied in the field of preparation of burdock root extract, and can solve the problems of cumbersome operation, high equipment cost and low extraction rate

Inactive Publication Date: 2020-06-02
南京珍唯康生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The supercritical extraction method has the disadvantages of high equipment cost and is not suitable for industrial production; at present, the acid water percolation method is mostly used in the industry, and its disadvantages are cumbersome operation, low extraction rate and large amount of waste liquid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The burdock root is dried, crushed, and passed through a 20-mesh sieve; add 70% ethanol solution that is 4 times the mass of the raw material, soak for 1 hour, place it in an ultrasonic-microwave extraction device, set the ultrasonic wave to 300W, and the microwave power to 300W, and extract for 2 hours; centrifuge, The resulting supernatant was concentrated under reduced pressure until it had no alcohol smell, and the pH value was adjusted to 8 with ammonia water; the eluate was concentrated under reduced pressure, extracted twice with an organic solvent petroleum ether, and the obtained extract was concentrated and vacuum-dried to obtain the burdock root extract.

Embodiment 2

[0015] The burdock root is dried, crushed, and passed through a 20-mesh sieve; add 80% ethanol solution that is 6 times the mass of the raw material, soak for 1 hour, place it in an ultrasonic-microwave extraction device, set the ultrasonic wave to 300W, and the microwave power to 500W, and extract for 3 hours; centrifuge, The resulting supernatant was concentrated under reduced pressure until it had no alcohol smell, and the pH value was adjusted to 9 with ammonia water; the eluent was concentrated under reduced pressure, extracted twice with an organic solvent petroleum ether, and the obtained extract was concentrated and vacuum-dried to obtain the burdock root extract.

Embodiment 3

[0017] The burdock root was dried, crushed, and passed through a 20-mesh sieve; adding 75% ethanol solution 5 times the mass of the raw material, soaked for 1 hour, placed in an ultrasonic-microwave extraction device, set the ultrasonic wave to 300W, and the microwave power to 400W, and extracted for 2 hours; centrifuged, The resulting supernatant was concentrated under reduced pressure until it had no alcohol smell, and the pH value was adjusted to 8 with ammonia water; the eluate was concentrated under reduced pressure, extracted twice with an organic solvent petroleum ether, and the obtained extract was concentrated and vacuum-dried to obtain the burdock root extract.

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Abstract

The invention relates to a preparation method of a burdock root extract. The method comprises the following steps: drying and crushing burdock roots, and performing sieving with a 20-mesh sieve; adding an ethanol solution which is 4-6 times by mass of raw materials, performing soaking for 1 hour, putting the soaked raw material into an ultrasonic-microwave extraction device, setting ultrasonic wave to be 300W and microwave power to be 300-500W, and performing extraction for 2-3 hours; performing centrifuging, carrying out reduced pressure concentration on obtained supernatant until no alcoholsmell exists, and adjusting the pH value to 8-9 by using ammonia water; and concentrating the eluate under reduced pressure, performing extraction with an organic solvent twice, and subjecting the obtained extract to concentration and vacuum drying to obtain the burdock root extract. The method has the advantages of simple process, short extraction time, high selectivity, no harm to the environment and the like, and is suitable for large-scale production.

Description

Technical field: [0001] The invention relates to a preparation method of burdock root extract, in particular to a method for extracting burdock root extract by using ultrasonic-microwave. Background technique: [0002] Burdock root, the name of traditional Chinese medicine. It is the root of Arctium lappa L., a plant of Compositae. Burdock is distributed in the northeast, northwest, central south, southwest and Hebei, Shanxi, Shandong, Jiangsu, Anhui, Zhejiang, Jiangxi, Guangxi and other places. It has the effects of dispersing wind-heat and disinfecting swelling. It is often used for wind-heat and cold, headache, cough, swollen face due to heat poisoning, sore throat, swollen gums, rheumatic arthralgia, lumps in the abdomen, carbuncle furuncle, and hemorrhoids. [0003] At present, the extraction of burdock root extract mainly uses solvent extraction method, supercritical fluid extraction method, or acid water percolation method, etc., and there are many deficiencies. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/28A61K125/00
CPCA61K36/28A61K2236/333A61K2236/39A61K2236/51
Inventor 乔玉平
Owner 南京珍唯康生物科技有限公司
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