CN100343375C - Supercritical carbon dioxide extraction method for extracting gingko oil from gingko fruit - Google Patents
Supercritical carbon dioxide extraction method for extracting gingko oil from gingko fruit Download PDFInfo
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- CN100343375C CN100343375C CNB2005100414084A CN200510041408A CN100343375C CN 100343375 C CN100343375 C CN 100343375C CN B2005100414084 A CNB2005100414084 A CN B2005100414084A CN 200510041408 A CN200510041408 A CN 200510041408A CN 100343375 C CN100343375 C CN 100343375C
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- gingko
- ginkgo
- oil
- carbon dioxide
- extraction kettle
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Abstract
The present invention relates to a method for extracting and separating gingko oil from gingko fruits by using supercritical carbon dioxide. Gingko fruits are dried and crushed into gingko powder, and an extraction kettle is filled with the gingko powder; the temperature of the extraction kettle is from-10 to 20 DEG C; a carbon dioxide pump is started, and the pressure is raised to 5 to 15MPa; carbon dioxide is led into the extraction kettle; the carbon dioxide through the extraction kettle is put in a first-level separation pot and a second-level separation pot which are connected in series; gingko oil is separated and released under the conditions of the temperature of 15 to 20 DEG C and 20 to 30 DEG C respectively, and the pressure of 2 to 3MPa and 1 to 5Mpa respectively; the carbon dioxide is refrigerated and compressed into an air storage tank for circulatory extraction for 7 to 10 hours; the pump is stopped and decompressed; the extract of gingko is discharged from the extraction kettle, and the gingko oil is discharged from the separation pots. The method has the advantages of short process and rapid separation speed, and the extracted gingko oil accounts for 4 to 5% of the total amount.
Description
Technical field
The present invention relates to a kind of method that adopts supercritical co extracting and separating from ginkgo nut to contain the ginkgo oil of various nutrition of ginkgo and pharmaceutical use.
Background technology
Ginkgo is the 4th ice age in a generation son something lost plant, is Chinese peculiar rare tree.Ginkgo also contains major ingredient such as vitamins C, riboflavin, carotene, calcium, phosphorus, iron, potassium, zinc, magnesium, sodium, lithium, copper, bilobalide, ginnol, ginkgol except that fatty, protein, carbohydrate.Its nutrition and pharmaceutical use history records are put down in writing already and are more and more paid attention to by people, especially the middle-aged and old health are even more important.
Summary of the invention
The objective of the invention is to adopt supercritical co one-step extracting and isolate the ginkgo oil that contains various nutrition of ginkgo and pharmaceutical use from ginkgo nut, be applied to then in the series product such as various healthcare products, makeup.
Embodiment of the present invention are as follows: the method that adopts supercritical co extracting and separating ginkgo oil from ginkgo nut, be that ginkgo nut oven dry is ground in the extraction kettle of packing into behind the ginkgo powder, temperature is negative 10 ℃ to 20 ℃, start carbon dioxide pump, boost to the 5-15 MPa, carbonic acid gas is sent in the extraction kettle, enter one-level through the carbonic acid gas behind the extraction kettle, two placed in-line separating stills of secondary, be respectively 15-20 ℃ in temperature, 20-30 ℃, pressure is respectively the 2-3 MPa, separate under the 1-5 MPa condition, discharge ginkgo oil, carbonic acid gas is again by refrigeration, be compressed in the gas holder, after cycling extraction 7-10 hour, termination of pumping, the ginkgo extract remainder is emitted in step-down from extraction kettle, emit ginkgo oil from separating still.
Advantage of the present invention is:
1, flow process is short, and velocity of separation is fast, the yield height.
2, after the extraction, ginkgo oil accounts for the 4-5% of total amount, and all the other are extract remainder, and 99.9% is starch in the extract remainder.
Embodiment
Following preference is described in detail the present invention, but the scope of the invention is not had any restriction.
Ginkgo nut is made ginkgo powder according to a conventional method, 10 kilograms of ginkgo powders are put into extraction kettle, temperature is 5 ℃, start carbon dioxide pump, boost to 12 MPas, carbonic acid gas enters one-level after by extraction kettle, two placed in-line separators of secondary discharge ginkgo oil, flash trapping stage still temperature is 15 ℃, pressure is 2.5 MPas, 25 ℃ of secondary separating still Wen Weidu, pressure is 3 MPas, and carbonic acid gas is by refrigeration, be compressed in the gas holder, cycling extraction is after 8 hours, termination of pumping, step-down, emit 9.58 kilograms of ginkgo extract remainders from extraction kettle, emit 0.42 kilogram of ginkgo oil from two series connection separating stills, analytical results sees Table 1
Table 1
| Extraction kettle | Separating still | ||
| Example | Ginkgo powder weight (kilogram) before the extraction | Extraction back extract remainder weight (kilogram) | Extract ginkgo oil weight (kilogram) |
| 1 | 10.0 | 9.58 | 0.42 |
| 2 | 10.0 | 9.56 | 0.44 |
Example 2, remove extraction temperature and change 8 ℃ into, extracting pressure changes 14 MPas into, and all the other conditions are identical with example 1, each gets 9.56 kilograms of extract remainders and 0.44 kilogram of extract ginkgo oil, and analytical results also sees Table 1.
Claims (2)
1, a kind of method that adopts supercritical co extracting and separating ginkgo oil from ginkgo nut, it is characterized in that: ginkgo nut oven dry is ground in the extraction kettle of packing into behind the ginkgo powder, temperature is negative 10 ℃ to 20 ℃, start carbon dioxide pump, boost to the 5-15 MPa, carbonic acid gas is sent in the extraction kettle, enter one-level through the carbonic acid gas behind the extraction kettle, two placed in-line separating stills of secondary, be respectively 15-20 ℃ in temperature, 20-30 ℃, pressure is respectively the 2-3 MPa, separate under the 1-5 MPa condition, discharge ginkgo oil, carbonic acid gas is again by refrigeration, be compressed in the gas holder, after cycling extraction 7-10 hour, termination of pumping, the ginkgo extract remainder is emitted in step-down from extraction kettle, emit ginkgo oil from separating still.
2, according to the method for claim 1, it is characterized in that:
A, extraction temperature are 5 ℃, and extracting pressure is 12 MPas, and the cycling extraction time is 8 hours;
B, flash trapping stage still temperature are that 15 ℃, pressure are 2.5 MPas, and 25 ℃ of secondary separating still Wen Weidu, pressure are 3 MPas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100414084A CN100343375C (en) | 2005-08-11 | 2005-08-11 | Supercritical carbon dioxide extraction method for extracting gingko oil from gingko fruit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100414084A CN100343375C (en) | 2005-08-11 | 2005-08-11 | Supercritical carbon dioxide extraction method for extracting gingko oil from gingko fruit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1737093A CN1737093A (en) | 2006-02-22 |
| CN100343375C true CN100343375C (en) | 2007-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100414084A Expired - Fee Related CN100343375C (en) | 2005-08-11 | 2005-08-11 | Supercritical carbon dioxide extraction method for extracting gingko oil from gingko fruit |
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|---|---|
| CN (1) | CN100343375C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109810789A (en) * | 2018-07-25 | 2019-05-28 | 上海药辰生物科技有限公司 | A kind of extracting method of ginkgo essential oil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172669A (en) * | 1997-08-22 | 1998-02-11 | 孙云鹏 | Method for extracting and separating flavone and terlactone from ginkgo leaf by supercritical carbon dioxide |
| CN1472206A (en) * | 2002-08-02 | 2004-02-04 | 广东省测试分析研究所 | Method for preparing ginkgo leaf extractive |
-
2005
- 2005-08-11 CN CNB2005100414084A patent/CN100343375C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172669A (en) * | 1997-08-22 | 1998-02-11 | 孙云鹏 | Method for extracting and separating flavone and terlactone from ginkgo leaf by supercritical carbon dioxide |
| CN1472206A (en) * | 2002-08-02 | 2004-02-04 | 广东省测试分析研究所 | Method for preparing ginkgo leaf extractive |
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|---|---|
| CN1737093A (en) | 2006-02-22 |
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