CN1173531A - Method for hypercritical CO2 extracting Jasmine oil - Google Patents
Method for hypercritical CO2 extracting Jasmine oil Download PDFInfo
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- CN1173531A CN1173531A CN 96111355 CN96111355A CN1173531A CN 1173531 A CN1173531 A CN 1173531A CN 96111355 CN96111355 CN 96111355 CN 96111355 A CN96111355 A CN 96111355A CN 1173531 A CN1173531 A CN 1173531A
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Abstract
A process for extracting jasmine oil by supercritical CO2 fluid includes pre-treating fresh jasmine flower in an enclosed baker at 45-75 deg. C for 2-8 hr, extracting the pretreated jasmine flower, which is 15-20% of frech jasmine flower in an extracting tower by supercritical CO2 at 37-35 deg. C and 10-13 MPa for 4-7 hr, depressurizing, separation and discharging, and features simple process flow, easy operation, high quality of product, low consumption of energy and no pollution. Said CO2 can be used cyclically.
Description
The present invention relates to a kind of method, belong to chemical separation technology with hypercritical CO 2 extracting Jasmine oil.
The method of existing extracting jasmin oil is that first fresh flower with jasmine makes jasmine concrete with the sherwood oil lixiviate, the rate of extract is 2.5%-2.8%, add 10 times of ethanol of people then, cold filtration is removed insoluble wax, be cooled to-18 ℃ again, filter once more to divide and remove secondary wax, ethanolic soln concentrating under reduced pressure (＜50 ℃ 5.3-6.6kPa) promptly make absolute oil, press medicinal extract and calculate, the absolute oil yield is 52%.The shortcoming of prior art is that fragrance is relatively poor, and color is darker, and yield is lower.
Supercritical carbon dioxide extraction is that the eighties obtains the chemical separation technology that develops rapidly in the world, has advantages such as flow process is simple, efficient, ambient operation, and is pollution-free, is particularly suitable for the separation and purification of active ingredient of natural product.According to 1993 the 3rd phases of " World Science " magazine, semicontinuous fluid circulation supercritical fluid extraction technology was adopted in American National agricultural application research centre in 1987, did not see that with some examples of supercritical carbon dioxide extraction components of cosmetics jasmin oil is arranged.The feature of Chinese patent CN85102396 is directly not use supercritical co extracting fresh flower spices, and be to use the adsorbents adsorb fresh flower to open the fragrance that comes out in the process, be adsorbed the two step method of the adsorbed essential oil of agent then with the supercritical co extracting, separate ethereal oil of flower.CN90108638 provides a kind of vapor phase process that adopts directly to tell production technique and the equipment that extracts natural refined jasmine oil the fragrance of putting from Flower of Arabian Jasmine, complex process, and extraction time is long, and yield is low.
Purpose of the present invention is exactly to overcome the shortcoming that exists in the prior art, and a kind of technology advanced person is provided, and flow process is simple, extraction efficiency height, the continuous fluid circulation supercritical CO 2 extraction technology of maintenance jasmin oil pure natural fragrance fragrance.
The object of the present invention is achieved like this, the method of supercritical carbon dioxide extraction jasmin oil, comprise pressurization-extraction-decompression-separation-emptying flow process, it is characterized in that before the supercritical carbon dioxide extraction, bright Flower of Arabian Jasmine put in the airtight temperature baking equipment carry out pre-treatment, pretreatment condition is 45 ℃-75 ℃ of temperature, time 2-8 hour.Pretreated Flower of Arabian Jasmine accounts for fresh flower 15%-25%, packs in the extraction tower with entrainment agent, extracts with supercritical co, 31 ℃-35 ℃ of extraction temperature, pressure 10MPa-13MPa, time 4-7 hour, separate obtaining jasmin oil, carbonic acid gas can be recycled.
The present invention has following advantage compared with prior art:
1. adopt extracting Jasmine oil of the present invention, the product yield height reaches 3.5%--4.0%, and the 15--25 that extracts for organic solvent and distillation method doubly tells the fragrant jasmin oil that extracts from Flower of Arabian Jasmine and improves 1--2 percentage point than vapor phase process is direct;
2. the extraction time of the present invention is short, and only 4--6 hour, compared in extraction time 4-48 hour with prior art, shorten about 40 hours, it is fast to go out speed oil, has improved the device processing power;
3. the present invention operates at normal temperatures, extract jasmin oil, the quality product height, keep the jasmin oil pure natural property, compared with prior art, because available technology adopting organic solvent and distillation, the jasmin oil pure natural property has been polluted in the existence of organic solvent, the distillation temperature height has destroyed the jasmin oil flavour ingredient, causes quality product low;
4. technical process is simple, and supercritical co directly extracts essential oil from Flower of Arabian Jasmine, and carbonic acid gas can be recycled, save energy, non-environmental-pollution;
5. equipment is simple, and is easy to operate, less investment.
Accompanying drawing is the process flow sheet of hypercritical CO 2 extracting Jasmine oil of the present invention.
1 carbonic acid gas wherein, 2 valves, 3 compressors, 4 extraction towers, 5 reducing valve, 6 separators, 7 condensers, 8 blow-off valves, 9 essential oil devices.
Below in conjunction with accompanying drawing technical scheme of the present invention is done further statement. In extraction tower (4) Middle filling is through pretreated Jasmine, and adding ethanol entrainer, opens the carbon dioxide valve (2), start compressor (3), carbon dioxide is delivered to extraction tower (4), in certain overcritical pressure Extract under power and the temperature, open subsequently pressure-reducing valve (5), carbon dioxide carries extract and enters separation Device (6) is isolated the carbon dioxide of oil-containing, in condenser (7) cooling liquid, sends compressor back to again (3) cycling extraction through 4-6 hour, is opened atmospheric valve (8), and the carbon dioxide of oil-containing enters essence Oil device (9), because the density ratio of oil is bigger, deposition is got off, and obtains highly purified jasmine in the essential oil device The jasmine caul-fat, carbon dioxide density is smaller, then runs away from the perforate of essential oil device top.
With pretreated Flower of Arabian Jasmine 60 grams, 10 milliliters of ethanol entrainment agents are in the extraction tower of 0.30 liter of the volume of packing into, use temperature 35C, the supercritical co of pressure 11MPa extracts, 5 hours extraction time, under the normal temperature normal atmosphere, carry out tapping, can obtain jasmin oil 2.10 grams.
Pretreated Flower of Arabian Jasmine 50 grams, 10 milliliters of ethanol entrainment agents are used temperature 35C, and the supercritical co of pressure 12MPa extracts, 6 hours extraction time, under the normal temperature normal atmosphere, carry out tapping, obtain jasmin oil 1.90 grams.
Claims (3)
1. the method for a supercritical carbon dioxide extraction jasmin oil, comprise pressurization-extraction-decompression-separation-emptying flow process, it is characterized in that before the supercritical carbon dioxide extraction, bright Flower of Arabian Jasmine put in the airtight temperature baking equipment carry out pre-treatment, after the pre-treatment, Flower of Arabian Jasmine is packed in the extraction tower (4), extract as extractant with supercritical co.
2. by the method for the described extracting Jasmine oil of claim 1, it is characterized in that pretreatment condition is 45 ℃-75 ℃ of temperature, time 2-8 hour.
3. press the method for claim 1 and 2 described extracting Jasmine oils, it is characterized in that pretreated Flower of Arabian Jasmine accounts for fresh flower 15%-25%, pack in the extraction tower (5) with entrainment agent, extract with supercritical co, 31 ℃-35 ℃ of extraction temperature, pressure 10MPa-13MPa, time 4-7 hour, carbonic acid gas can be recycled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96111355 CN1173531A (en) | 1996-08-13 | 1996-08-13 | Method for hypercritical CO2 extracting Jasmine oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96111355 CN1173531A (en) | 1996-08-13 | 1996-08-13 | Method for hypercritical CO2 extracting Jasmine oil |
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| Publication Number | Publication Date |
|---|---|
| CN1173531A true CN1173531A (en) | 1998-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 96111355 Pending CN1173531A (en) | 1996-08-13 | 1996-08-13 | Method for hypercritical CO2 extracting Jasmine oil |
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| CN (1) | CN1173531A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387698C (en) * | 2005-04-18 | 2008-05-14 | 宋开泉 | Extraction method of jasmine flower absolute oil |
| CN105132181A (en) * | 2015-08-10 | 2015-12-09 | 上海震樨机电科技发展有限公司 | Process for extracting paeonia suffruticosa essential oil from paeonia suffruticosa fresh flower |
| CN106318637A (en) * | 2016-08-28 | 2017-01-11 | 广西灏源盛世生物科技有限公司 | Method for extracting Arabian jasmine flower essential oil |
-
1996
- 1996-08-13 CN CN 96111355 patent/CN1173531A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387698C (en) * | 2005-04-18 | 2008-05-14 | 宋开泉 | Extraction method of jasmine flower absolute oil |
| CN105132181A (en) * | 2015-08-10 | 2015-12-09 | 上海震樨机电科技发展有限公司 | Process for extracting paeonia suffruticosa essential oil from paeonia suffruticosa fresh flower |
| CN106318637A (en) * | 2016-08-28 | 2017-01-11 | 广西灏源盛世生物科技有限公司 | Method for extracting Arabian jasmine flower essential oil |
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