CN102302693A - Method for extracting imperata cylindrical root extract - Google Patents
Method for extracting imperata cylindrical root extract Download PDFInfo
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- CN102302693A CN102302693A CN201110264132A CN201110264132A CN102302693A CN 102302693 A CN102302693 A CN 102302693A CN 201110264132 A CN201110264132 A CN 201110264132A CN 201110264132 A CN201110264132 A CN 201110264132A CN 102302693 A CN102302693 A CN 102302693A
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- extract
- rhizoma imperatae
- carbon dioxide
- root extract
- extraction
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- Medicines Containing Plant Substances (AREA)
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Abstract
The invention discloses a method for extracting an imperata cylindrical root extract. The method comprises: crushing the imperata cylindrical roots to have a particle size of 60-80 meshes; adding the crushed material to a supercritical carbon dioxide extraction tank; introducing liquid carbon dioxide and adding a entrainer to the tank; carrying out extraction for 2-3 hours at pressure of 20-35 MPa and at a temperature of 45-55 DEG C; carrying out decompression analysis for the extractant in a separator; recovering the reagent, carrying out drying to obtain the imperata cylindrical root extract. With adopting the method provided by the present invention to produce the imperata cylindrical root extract, the extraction efficiency is high, the period is short, the pollution can be reduced. In addition, the method is suitable for the industrial production.
Description
Technical field
The present invention relates to a kind of method that extracts Rhizoma Imperatae extract, particularly relate to a kind of method of supercritical carbon dioxide extraction extraction Rhizoma Imperatae extract.
Background technology
Rhizoma Imperatae is a grass perennial herb Herba Imperatae (formal name used at school: rhizome Imperata cylindrica).The traditional Chinese medical science thinks that the Rhizoma Imperatae nature and flavor are sweet, cold, has removing heat from blood, hemostasis, heat clearing away, diuretic effect.Modern study finds, Rhizoma Imperatae contains multiple liposoluble constituent like arundoin, Cylindrin, Coixol, fernenol, simiarenol, Isoarborinol alcohol, Anemonin, stigmasterol, cupreol, campesterol etc.Research finds that also the Rhizoma Imperatae liposoluble constituent has clearing away heat and promoting diuresis, the effect that protects the liver.
Have now from Rhizoma Imperatae extraction extract and be mostly alcohol or water extraction.(application number: 200810052602.6) " effective component of cogongrass rhizome and preparation method thereof ", this patent disclosed method is Rhizoma Imperatae to be extracted as solvent with ethyl acetate and alcohol mixture like patent.(application number: 201010010030.2) " a kind of purposes of Rhizoma Imperatae extract and method for preparing ", this patent disclosed method are that water is to extract solvent, adopt hot lifting manipulation for another example.Existing method, reagent volumes is many in extraction, and energy consumption is high, pollutes big.
The principle of supercritical carbon dioxide extraction separation process utilizes pressure and temperature that the influence of supercritical carbon dioxide solvability is carried out.Under supercriticality, supercritical carbon dioxide is contacted with treating isolating material, it is extracted the composition of polarity size, boiling point height and molecular weight size selectively successively.Method by decompression, intensification makes supercritical fluid become common gases then, is extracted material and then separates out fully or basically, separates the purpose of purifying thereby reach.CO
2Be a kind of inactive gas, chemical reaction does not take place in extraction process, and belongs to non-flammable gases, and tasteless, odorless, nontoxic is so safety is good; CO
2Low price, purity is high, obtain easily, and recycle in process of production, thereby reduce cost, and rate of extraction is fast.
Summary of the invention
The purpose of this invention is to provide a kind of method that extracts Rhizoma Imperatae extract, method is easy and simple to handle, and energy consumption is low.
The objective of the invention is to realize: a kind of method that extracts Rhizoma Imperatae extract through following technical scheme; It is characterized in that: Rhizoma Imperatae pulverizing medicinal materials 60-80 order; Add the supercritical carbon dioxide extraction jar; Feed liquid carbon dioxide and entrainer; Under pressure 20-35MPa, temperature 45-55 ℃ condition, extracted 2-3 hour, extract is resolved in decompression in the separator; Reclaim reagent, the dry Rhizoma Imperatae extract that gets.
Described flow of liquid carbon dioxide speed 18-25kg/h.
Described entrainer is 95% ethanol or acetone soln.
50-60 ℃ of described separator resolution temperature, pressure 5-10MPa.
Advantage of the present invention is: method has adopted supercritical carbon dioxide extraction, and the extraction time is short, and efficient is high, has reduced solvent load, and energy consumption is low, and low the pollution is a kind of green extracting process.
The specific embodiment
To combine the specific embodiment to further specify the present invention below.
Embodiment 1:
Rhizoma Imperatae pulverizing medicinal materials 60 orders are got 1kg and are added supercritical carbon dioxide extraction jar, 50 ℃ of setting pressure 30MPa, temperature; Feed liquid carbon dioxide; After reaching above-mentioned parameter, flow velocity is adjusted into 20kg/h, feeds entrainer 95% alcoholic solution simultaneously; Flow velocity is 300L/h; Extracted 3 hours, and regulated 55 ℃ of separator temperatures, pressure 6MPa; Resolve extract and reclaim alcoholic solution, drying obtains Rhizoma Imperatae extract 50g.
Embodiment 2:
Rhizoma Imperatae pulverizing medicinal materials 80 orders are got 1kg and are added supercritical carbon dioxide extraction jar, 45 ℃ of setting pressure 35MPa, temperature; Feed liquid carbon dioxide; After reaching above-mentioned parameter, flow velocity is adjusted into 25kg/h, feeds the entrainer acetone soln simultaneously; Flow velocity is 200ml/h; Extracted 2 hours, and regulated 60 ℃ of separator temperatures, pressure 8MPa; Resolve extract and reclaim alcoholic solution, drying obtains Rhizoma Imperatae extract 43g.
Embodiment 3:
Rhizoma Imperatae pulverizing medicinal materials 80 orders are got 1kg and are added supercritical carbon dioxide extraction jar, 55 ℃ of setting pressure 20MPa, temperature; Feed liquid carbon dioxide; After reaching above-mentioned parameter, flow velocity is adjusted into 25kg/h, feeds entrainer 95% alcoholic solution simultaneously; Flow velocity is 200ml/h; Extracted 2 hours, and regulated 50 ℃ of separator temperatures, pressure 6MPa; Resolve extract and reclaim alcoholic solution, drying obtains Rhizoma Imperatae extract 44g.
Claims (4)
1. method that extracts Rhizoma Imperatae extract; It is characterized in that: Rhizoma Imperatae pulverizing medicinal materials 60-80 order; Add the supercritical carbon dioxide extraction jar; Feed liquid carbon dioxide and entrainer; Under pressure 20-35MPa, temperature 45-55 ℃ condition, extracted 2-3 hour, extract is resolved in decompression in the separator; Reclaim reagent, the dry Rhizoma Imperatae extract that gets.
2. extract the method for Rhizoma Imperatae extract according to claim 1, it is characterized in that described flow of liquid carbon dioxide speed 18-25kg/h.
3. extract the method for Rhizoma Imperatae extract according to claim 1, it is characterized in that described entrainer is 95% ethanol or acetone soln.
4. extract the method for Rhizoma Imperatae extract according to claim 1, it is characterized in that 50-60 ℃ of described separator resolution temperature, pressure 5-10MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110264132A CN102302693A (en) | 2011-09-08 | 2011-09-08 | Method for extracting imperata cylindrical root extract |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110264132A CN102302693A (en) | 2011-09-08 | 2011-09-08 | Method for extracting imperata cylindrical root extract |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102302693A true CN102302693A (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110264132A Pending CN102302693A (en) | 2011-09-08 | 2011-09-08 | Method for extracting imperata cylindrical root extract |
Country Status (1)
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| CN (1) | CN102302693A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106243074A (en) * | 2016-08-01 | 2016-12-21 | 山东省分析测试中心 | A kind of subcritical water extracts the method for tricin in Herba Imperatae, Coixol and vanillic acid simultaneously |
| CN106879420A (en) * | 2017-02-24 | 2017-06-23 | 广西育运农业开发有限公司 | A kind of implantation methods of granulated sugar tangerine |
-
2011
- 2011-09-08 CN CN201110264132A patent/CN102302693A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106243074A (en) * | 2016-08-01 | 2016-12-21 | 山东省分析测试中心 | A kind of subcritical water extracts the method for tricin in Herba Imperatae, Coixol and vanillic acid simultaneously |
| CN106243074B (en) * | 2016-08-01 | 2018-04-24 | 山东省分析测试中心 | A kind of method that subcritical water extracts Tricin in cogongrass, Coixol and vanillic acid at the same time |
| CN106879420A (en) * | 2017-02-24 | 2017-06-23 | 广西育运农业开发有限公司 | A kind of implantation methods of granulated sugar tangerine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |