A kind of preparation method of antsweed ethyl acetate extract

A technology of ethyl acetate and extract of antwort grass, which is applied in the field of medicinal liquid extraction, can solve the problems of limited application and the like, and achieves the effects of simple operation and good curative effect.

Inactive Publication Date: 2018-06-19
GUANGXI UNIV OF CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, few people have done detailed research on the extraction of effective components of dog ant grass, and most of the whole plant is used as medicine, which greatly limits its application. After years of research, the inventor found that dog ant grass can be obtained by extraction with a suitable solvent The extract of its main active ingredients lays the foundation for its further development

Method used

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  • A kind of preparation method of antsweed ethyl acetate extract
  • A kind of preparation method of antsweed ethyl acetate extract
  • A kind of preparation method of antsweed ethyl acetate extract

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 The preparation method of the ethyl acetate extract of Trinidae wormwood (1)

[0019] 1.1 Experimental materials

[0020] 1.1.1 Experimental medicinal materials

[0021] Antweed was identified as the whole herb of Alysicarpus vaginalis (L.) DC.

[0022] 1.1.2 Experimental reagents

[0023] Petroleum ether: analytical pure Chengdu Kelong Chemical Reagent Factory Batch number: 20130820

[0024] Ethyl acetate: Analytical grade Chengdu Kelong Chemical Reagent Factory Batch number: 20130504

[0025] 1.1.3 Experimental Instruments

[0026] Electric heating mantle PTHW type Gongyi Maohua Instrument Co., Ltd.

[0027] Rotary Evaporator G3 Heidolph

[0028] Vacuum drying oven XMTO-8222 Shanghai Jinghong Experimental Equipment Co., Ltd.

[0029] Constant temperature water bath HH-S8 Jintan Medical Instrument Factory

[0030] 1.2 Experimental method

[0031] The preparation method of the ethyl acetate extract of Trinopteris miltifolia comprises the following ste...

Embodiment 2

[0038] Example 2 Preparation method of antsweed ethyl acetate extract (two)

[0039] The preparation method of the ethyl acetate extract of Trinopteris miltifolia comprises the following steps:

[0040] (1) Wash the dog antweed, ventilate and dry it at 22°C, cut it into pieces and weigh it, and place it in an open reactor.

[0041] (2) Add 4 times of 95% ethanol (v / v) into the open reactor to soak for 20 hours, then add 95% ethanol (v / v) to 12 times the amount of medicinal materials, and perform reflux extraction.

[0042] (3) Keep slightly boiling for 2 hours, filter to obtain the first extract; after the medicinal material is cooled, add 12 times the amount of 95% ethanol (v / v) for the second time, keep slightly boiling for 1.5 hours, and obtain the second filtrate; medicinal material After cooling, add 12 times the amount of 95% ethanol (v / v) for the third time, keep boiling slightly for 1 hour to obtain the third filtrate, combine the three extractions, concentrate throug...

Embodiment 3

[0046] Example 3 Method for preparing the extract of Trichosanthes chinensis ethyl acetate (3)

[0047] The preparation method of the ethyl acetate extract of Trinopteris miltifolia comprises the following steps:

[0048] (1) Wash the dog antweed, ventilate and dry at room temperature of 25°C, cut it into pieces and weigh it, and place it in an open reactor.

[0049] (2) Add 5 times of 95% ethanol (v / v) into the open reactor to soak for 24 hours, then add 95% ethanol (v / v) to 15 times the amount of the medicinal material, and perform reflux extraction.

[0050] (3) Keep slightly boiling for 2 hours, filter to obtain the first extract; after the medicinal material is cooled, add 15 times the amount of 95% ethanol (v / v) for the second time, keep slightly boiling for 1.5 hours, and obtain the second filtrate; After cooling, add 15 times the amount of 95% ethanol (v / v) for the third time, keep boiling slightly for 1 hour to obtain the third filtrate, combine the three extracts, c...

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Abstract

The invention discloses a method for preparing an alysicarpus vaginalis ethyl acetate extract. The method comprises the following steps: soaking alysicarpus vaginalis with 95% ethanol, carrying out reflux extraction, keeping slightly boiling for 2 hours, and filtering to obtain a first extracting solution; cooling the medicinal materials, adding 95% ethanol which is 12 times amount of the medicinal materials, and keeping slightly boiling for 1.5 hours to obtain a second filtrate; slightly cooling the medicinal material, adding 95% ethanol which is 12 times amount of the medicinal materials, and keeping slightly boiling for 1 hour to obtain a third filtrate; mixing three extracting solutions, concentrating by a rotary evaporator to prepare a 95% ethanol extract; drying the ethanol extract, dissolving with water, extracting sequentially with petroleum ether and ethyl acetate, concentrating, volatizing solvent and drying in vacuum to obtain the ethyl acetate extract of alysicarpus vaginalis.

Description

technical field [0001] The invention belongs to the technical field of medicinal liquid extraction, and in particular relates to a preparation method of ethyl acetate extract of Trinidad vermicelli and an application of the ethyl acetate extract of Trinopterus vermicelli. Background technique [0002] Ant grass is the whole herb of the legume plant Alysicarpus vaginalis (L.) DC. Native to South Asia and East Africa. Widely distributed in tropical regions of the Eastern Hemisphere. Hi tropical humid arid climate. Slightly drought-resistant, acid-resistant, not resistant to stains. It grows well on sandy loam, but is susceptible to nematodes, so it is usually planted on clay soil. The whole herb is sweet, bitter, flat; promoting blood circulation and dredging collaterals, clearing heat and dampness, resolving bone swelling; used for bruises, hemiplegia, femoral pain, hepatitis; snake bites, fractures, Bleeding from trauma, sores and festerings persist for a long time. It...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K36/48A61P1/16
CPCA61K36/48A61K2236/13A61K2236/15A61K2236/17A61K2236/333A61K2236/39A61K2236/51A61K2236/53A61K2236/55
Inventor 郑作文唐云丽黄丽贞
Owner GUANGXI UNIV OF CHINESE MEDICINE
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