CN102965198A - Method for extracting and processing lavender essential oil - Google Patents
Method for extracting and processing lavender essential oil Download PDFInfo
- Publication number
- CN102965198A CN102965198A CN2012104553141A CN201210455314A CN102965198A CN 102965198 A CN102965198 A CN 102965198A CN 2012104553141 A CN2012104553141 A CN 2012104553141A CN 201210455314 A CN201210455314 A CN 201210455314A CN 102965198 A CN102965198 A CN 102965198A
- Authority
- CN
- China
- Prior art keywords
- temperature
- separating still
- pressure
- essential oil
- extracting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 244000178870 Lavandula angustifolia Species 0.000 title claims abstract description 22
- 235000010663 Lavandula angustifolia Nutrition 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000001102 lavandula vera Substances 0.000 title claims abstract description 12
- 235000018219 lavender Nutrition 0.000 title claims abstract description 12
- 238000012545 processing Methods 0.000 title claims abstract description 6
- 239000000341 volatile oil Substances 0.000 title abstract description 9
- 238000000605 extraction Methods 0.000 claims abstract description 33
- 239000000284 extract Substances 0.000 claims description 13
- 238000012856 packing Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 8
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 9
- 239000003960 organic solvent Substances 0.000 description 8
- 238000011084 recovery Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 238000001256 steam distillation Methods 0.000 description 4
- 230000001351 cycling effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- UWKAYLJWKGQEPM-UHFFFAOYSA-N 3,7-dimethylocta-1,6-dien-3-yl acetate Chemical compound CC(C)=CCCC(C)(C=C)OC(C)=O UWKAYLJWKGQEPM-UHFFFAOYSA-N 0.000 description 2
- 241000722824 Ardisia crenata Species 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- QESPSAHXYXIGBG-UHFFFAOYSA-N 5-ethenyl-5-methyloxolan-2-one Chemical compound C=CC1(C)CCC(=O)O1 QESPSAHXYXIGBG-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- AYXPYQRXGNDJFU-AOWZIMASSA-N Ledol Chemical compound [C@@H]1([C@](CC[C@@H]2[C@H]3C2(C)C)(C)O)[C@H]3[C@H](C)CC1 AYXPYQRXGNDJFU-AOWZIMASSA-N 0.000 description 1
- 230000001430 anti-depressive effect Effects 0.000 description 1
- 230000002019 anti-mutation Effects 0.000 description 1
- 230000003502 anti-nociceptive effect Effects 0.000 description 1
- 230000003260 anti-sepsis Effects 0.000 description 1
- 230000000259 anti-tumor effect Effects 0.000 description 1
- 230000010100 anticoagulation Effects 0.000 description 1
- 239000000935 antidepressant agent Substances 0.000 description 1
- 229940005513 antidepressants Drugs 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 230000009084 cardiovascular function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000004799 sedative–hypnotic effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Fats And Perfumes (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
The invention relates to a method for extracting and processing lavender essential oil, belonging to the technical field of preparation of lavender essential oil. The method comprises the following steps: (1) pulverizing lavender flowers to 10-40 meshes, filling into an extraction tank of which the temperature is 35-55 DEG C, introducing supercritical CO2 gas into the extraction tank at the flow rate of 15-25 L/hour, and extracting under the pressure of 16-28 MPa for 1.0-3.0 hours; and (2) introducing the CO2 gas after extracting the lavender essential oil into a separation kettle 1 and a separation kettle 2 to carry out separation, and respectively collecting lavender wax lavender essential oil at the separation kettle 1 and the separation kettle 2, wherein the pressure and temperature of the separation kettle 1 are respectively 6-8 MPa and 30-50 DEG C, and the pressure and temperature of the separation kettle 2 are respectively 4-6 MPa and 30-40 DEG C.
Description
Technical field
The present invention relates to a kind of with supercritical CO
2Fluid extraction technology prepares the method for Herba Lysimachiae foenumgraeci quintessence oil.
Background technology
Lavandula angustifolia is the dry aerial parts of the narrow leaf lavandula angustifolia of labiate.Because of its fragrant odour, be commonly used for the raw material of perfume compound, wormer and preparation perfume.Modern pharmacology studies show that lavandula angustifolia has sedative hypnotic, antisepsis and anti-inflammation, scar eliminating, step-down, antioxygenation, antidepressant, anticoagulation, anti-mutation, rheumatism, anti-nociception pain, the antitumor and not congruent effect for the treatment of cardiovascular function.The extracting method of Herba Lysimachiae foenumgraeci quintessence oil is generally steam distillation and organic solvent extractionprocess at present, and the former is the most general, and this method equipment is simple, easy and simple to handle, cost is lower, but excess Temperature when extracting essential oil, can cause that heat-sensitive materials produces decomposition in the essential oil, and the hydrolysis of facile hydrolysis composition, gained essential oil purity is low, foreign matter content is high, and extraction yield is low, generally between 0.8%-1.2%, and can not directly use, must be through purifying, detoxification, impurity elimination and the secondary processing arrangement such as concentrated can be used.Although latter's extraction yield is higher, be 2%-3%, there is the organic solvent residual problem in the essential oil that extracts, quality is greatly affected, and the recovery of organic solvent also is large problem, relates to safety and Environmental Factors.
Summary of the invention
The object of the present invention is to provide the method for the extraction Herba Lysimachiae foenumgraeci quintessence oil that a kind of foreign matter content is low, extraction yield is high, with CO
2Gas adopts supercritical liquid extraction technique to prepare Herba Lysimachiae foenumgraeci quintessence oil as mass transfer.
Concrete operation step of the present invention is as follows: lavender flower is crushed to the 10-40 order, and in the extractor of packing into, temperature is 35-55 ℃ in the extractor, passes into supercritical CO in extractor
2Gas, flow are 15L/h-25L/h, and extracting pressure is 16MPa-28MPa, and extraction time is set as 1.0h-3.0h; The CO of Herba Lysimachiae foenumgraeci quintessence oil will have been extracted
2Gas imports separating still 1 successively to be separated with separating still 2, the pressure of separating still 1 is 6MPa-8MPa, and temperature is 30-50 ℃, and separating still 2 pressure are 4MPa-6MPa, temperature is 30-40 ℃, collects respectively lavandula angustifolia wax and Herba Lysimachiae foenumgraeci quintessence oil from separating still 1 and separating still 2.
Lavandula angustifolia is as one of phyto-group that has the total attribute of medicinal plant and spice berry concurrently, act on very extensively, and whether its quality directly has influence on the products such as the pharmaceutical prod of later development and the daily use chemicals of improving looks.The present invention adopts supercritical CO
2Phanteine content in the Herba Lysimachiae foenumgraeci quintessence oil that fluid extraction technology extracts is far above the content in the Herba Lysimachiae foenumgraeci quintessence oil of steam distillation and organic solvent extractionprocess extraction, and phanteine is aromatoising substance main in the lavandula angustifolia, the content that it has been generally acknowledged that phanteine is higher, and the quality of Herba Lysimachiae foenumgraeci quintessence oil is better.In addition, in the extract of the present invention, 3,7-dimethyl-1,5-octadiene-3, the components such as 7-glycol, 5-vinyl dihydro-5-methyl-2 (3H)-furanone, ledum camphor and tonka bean camphor are distinctive in the Herba Lysimachiae foenumgraeci quintessence oil that extracts of the present invention, and correlative study shows that the Herba Lysimachiae foenumgraeci quintessence oil antioxygenation more by force may be relevant therewith.
Supercritical CO
2Fluid extraction technology is a kind of advanced extracting method that grows up in nearly twenty or thirty year, and it combines solvent extraction and two kinds of functional characteristicss of distillation, and the know-why of institute's foundation is as follows:
The density of the carbonic acid gas under high pressure or the low-temperature condition is close to liquid, and the while is keeping the properties of common gases, admittedly be called " supercutical fluid ", it has very strong dissolving power.When spice berry contacted with it, the fragrance ingredient of plant will be dissolved among this fluid, then by the method for decompression or intensification, just can finally separate fragrance ingredient.
Because supercritical CO
2Has preferably solvent properties, extraction separating effect for the stronger composition of volatility, heat-sensitive substance and fat-soluble component is obvious, extract obtained foreign matter content is few, thermally labile and easy oxidized component have been kept, especially do not contain the organic solvent that other extracting method may carry, can satisfy current people and generally pursue theory natural, green product, not produce " three wastes " in the production, more meet environmental protection standard.The present invention has following technical superiority:
1, the extracting method of green cleaning: because whole process need not any organic solvent, so the absolutely not any chemical solvents of product is residual, has prevented harmful chemical residual and the course of processing to the pollution of environment, has guaranteed 100% pure natural property;
2, safest extracting method: CO
2Be a kind of rare gas element, therefore in extraction process, chemical reaction can not occur, simultaneously CO
2Non-combustible gas, tasteless, odorless, nontoxic, security is very good;
3, energy-efficient extracting method: extraction and fractionation is united two into one, as the CO that contains solute
2When fluid enters separator, by reducing the change of pressure and temperature, so that CO
2Become rapidly two-phase (gas-liquid separation) with extract and separate immediately, the efficient of extraction is high, less energy consumption, can greatly enhance productivity and reduce cost;
4, can be near room temperature (35～40 ℃) and CO
2Extract under the atmosphere, effectively prevented oxidation and the loss of heat-sensitive substance.Therefore, can not affect function effective components in the extract, and can under far below its boiling temperature, extract boiling point height, volatility material low, easy pyrolysis;
5, CO
2Gas is produced easily, and price is low, and can recirculation use aborning, can effectively reduce cost;
6, pressure and temperature can become the parameter of regulating extraction process, reaches the purpose of extraction by changing temperature and pressure, and pressure fixing can be come separating substances too by changing temperature; Otherwise, temperature is fixed, by reducing pressure extract is separated, so the simple easily grasp of technique, and the speed of extraction is fast.
7, the present invention extracts recovery rate and is higher than steam distillation and organic solvent extractionprocess, can reach 4.0%-4.5%.
8, the component that identifies in the Herba Lysimachiae foenumgraeci quintessence oil that the present invention extracts is more than the component that obtains with steam distillation and organic solvent extractionprocess.
Embodiment
Example 1
Take by weighing the 100g lavender flower, be crushed to 30 orders, in the extractor of packing into, pass into CO
2Gas, the opening high pressure pump is forced into 22MPa, CO
2With the flow cycling extraction of 25L/h, the extractor temperature is 45 ℃, and extraction time is 1 hour.
CO with extraction
2Fluid imports respectively separating still 1 and separating still 2, and separating still 1 pressure is 7MPa, and temperature is 40 ℃, and separating still 2 pressure are 5MPa, and temperature is 35 ℃.
Collect respectively lavandula angustifolia wax from separating still 1, recovery rate is 0.31%, is 0.31g.Collect Herba Lysimachiae foenumgraeci quintessence oil from separating still 2, recovery rate is 4.50%, is 4.50g.
Example 2
Take by weighing the 100g lavender flower, be crushed to 20 orders, in the extractor of packing into, pass into CO
2Gas, the opening high pressure pump is forced into 16MPa, CO
2With the flow cycling extraction of 20L/h, the extractor temperature is 35 ℃, and extraction time is 3 hours.
CO with extraction
2Fluid is poured respectively separating still 1 and separating still 2 into, and separating still 1 pressure is 8MPa, and temperature is 50 ℃, and separating still 2 pressure are 6MPa, and temperature is 40 ℃.
Collect respectively lavandula angustifolia wax from separating still 1, recovery rate is 0.29%, is 0.29g.Collect Herba Lysimachiae foenumgraeci quintessence oil from separating still 2, recovery rate is 4.15%, is 4.15g.
Example 3
Take by weighing the 100g lavender flower, be crushed to 40 orders, in the extractor of packing into, pass into CO
2Gas, the opening high pressure pump is forced into 28MPa, CO
2With the flow cycling extraction of 15L/h, the extractor temperature is 55 ℃, and extraction time is 2 hours.
CO with extraction
2Fluid is poured respectively separating still 1 and separating still 2 into, and separating still 1 pressure is 6MPa, and temperature is 30 ℃, and separating still 2 pressure are 4MPa, and temperature is 30 ℃.Collect respectively lavandula angustifolia wax from separating still 1, recovery rate is 0.32%, is 0.32g.Collect Herba Lysimachiae foenumgraeci quintessence oil from separating still 2, recovery rate is 4.22%, is 4.22g.
Claims (1)
1. one kind is extracted the method for processing Herba Lysimachiae foenumgraeci quintessence oil, it is characterized in that comprising following process:
(1), lavender flower is crushed to the 10-40 order, in the extractor of packing into, temperature is 35-55 ℃ in the extractor, passes into supercritical CO in extractor
2Gas, flow are 15L/h-25L/h, and extracting pressure is 16MPa-28MPa, and extraction time is set as 1.0h-3.0h;
(2), will extract the CO of Herba Lysimachiae foenumgraeci quintessence oil
2Gas imports separating still 1 successively to be separated with separating still 2, the pressure of separating still 1 is 6MPa-8MPa, and temperature is 30-50 ℃, and separating still 2 pressure are 4MPa-6MPa, temperature is 30-40 ℃, collects respectively lavandula angustifolia wax and Herba Lysimachiae foenumgraeci quintessence oil from separating still 1 and separating still 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104553141A CN102965198A (en) | 2012-11-14 | 2012-11-14 | Method for extracting and processing lavender essential oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104553141A CN102965198A (en) | 2012-11-14 | 2012-11-14 | Method for extracting and processing lavender essential oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102965198A true CN102965198A (en) | 2013-03-13 |
Family
ID=47795634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104553141A Pending CN102965198A (en) | 2012-11-14 | 2012-11-14 | Method for extracting and processing lavender essential oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102965198A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146473A (en) * | 2013-03-21 | 2013-06-12 | 云南森源化工有限公司 | Method for simultaneously extracting Australian tea tree essential oil and flavonoid glycosides |
| CN103627528A (en) * | 2013-06-30 | 2014-03-12 | 金玛瑙香水（明光）有限公司 | Method for extracting lavender essential oil |
| CN104161795A (en) * | 2014-08-26 | 2014-11-26 | 吉林大学 | Soft capsule with functions of calming and impatience inhibition and preparation method of soft capsule |
| CN105886123A (en) * | 2016-05-16 | 2016-08-24 | 四川紫颐天堂香草科技开发有限公司 | Extraction technique of lavender essential oil |
| CN105982956A (en) * | 2015-02-15 | 2016-10-05 | 沈阳药科大学 | Preparation method and medicinal use of lavender antitumor extract and composition thereof |
| CN106047500A (en) * | 2016-05-31 | 2016-10-26 | 铜仁职业技术学院 | Method for efficiently extracting lavender and application of extract of lavender |
| CN106148008A (en) * | 2015-03-26 | 2016-11-23 | 江苏耐雀生物工程技术有限公司 | A kind of preparation method of Herba Lysimachiae foenum-graeci quintessence oil |
| CN108451008A (en) * | 2018-03-12 | 2018-08-28 | 湖北中烟工业有限责任公司 | A kind of biofermentation prepares the method and its application of lavender absolute oil |
| CN113754617A (en) * | 2021-09-09 | 2021-12-07 | 广州雅弥生物科技有限公司 | Method for refining furanone |
| CN119161924A (en) * | 2024-07-01 | 2024-12-20 | 蕉岭县福泰生物科技有限公司 | A kind of preparation method of aromatherapy lacquer wax |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999026903A1 (en) * | 1997-11-26 | 1999-06-03 | Extractive S.A. | Method for extracting organic molecule(s) using a solvent medium containing a hydrofluoroether |
| CN1693438A (en) * | 2005-05-12 | 2005-11-09 | 中国科学院广州化学研究所 | Process for extracting and refining lavender oil |
| CN1710045A (en) * | 2005-07-04 | 2005-12-21 | 上海应用技术学院 | A kind of extraction method of lavender essential oil |
| CN100999696A (en) * | 2006-12-26 | 2007-07-18 | 中国科学院新疆理化技术研究所 | Extracting process of lavender flower |
-
2012
- 2012-11-14 CN CN2012104553141A patent/CN102965198A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999026903A1 (en) * | 1997-11-26 | 1999-06-03 | Extractive S.A. | Method for extracting organic molecule(s) using a solvent medium containing a hydrofluoroether |
| CN1693438A (en) * | 2005-05-12 | 2005-11-09 | 中国科学院广州化学研究所 | Process for extracting and refining lavender oil |
| CN1710045A (en) * | 2005-07-04 | 2005-12-21 | 上海应用技术学院 | A kind of extraction method of lavender essential oil |
| CN100999696A (en) * | 2006-12-26 | 2007-07-18 | 中国科学院新疆理化技术研究所 | Extracting process of lavender flower |
Non-Patent Citations (1)
| Title |
|---|
| 赵文彬，等: "超临界CO2 萃取薰衣草挥发油的工艺研究", 《石河子大学学报(自然科学版)》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146473A (en) * | 2013-03-21 | 2013-06-12 | 云南森源化工有限公司 | Method for simultaneously extracting Australian tea tree essential oil and flavonoid glycosides |
| CN103627528A (en) * | 2013-06-30 | 2014-03-12 | 金玛瑙香水（明光）有限公司 | Method for extracting lavender essential oil |
| CN104161795A (en) * | 2014-08-26 | 2014-11-26 | 吉林大学 | Soft capsule with functions of calming and impatience inhibition and preparation method of soft capsule |
| CN105982956A (en) * | 2015-02-15 | 2016-10-05 | 沈阳药科大学 | Preparation method and medicinal use of lavender antitumor extract and composition thereof |
| CN106148008A (en) * | 2015-03-26 | 2016-11-23 | 江苏耐雀生物工程技术有限公司 | A kind of preparation method of Herba Lysimachiae foenum-graeci quintessence oil |
| CN105886123A (en) * | 2016-05-16 | 2016-08-24 | 四川紫颐天堂香草科技开发有限公司 | Extraction technique of lavender essential oil |
| CN106047500A (en) * | 2016-05-31 | 2016-10-26 | 铜仁职业技术学院 | Method for efficiently extracting lavender and application of extract of lavender |
| CN108451008A (en) * | 2018-03-12 | 2018-08-28 | 湖北中烟工业有限责任公司 | A kind of biofermentation prepares the method and its application of lavender absolute oil |
| CN113754617A (en) * | 2021-09-09 | 2021-12-07 | 广州雅弥生物科技有限公司 | Method for refining furanone |
| CN119161924A (en) * | 2024-07-01 | 2024-12-20 | 蕉岭县福泰生物科技有限公司 | A kind of preparation method of aromatherapy lacquer wax |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102965198A (en) | Method for extracting and processing lavender essential oil | |
| CN206244694U (en) | The production equipment of high-purity cannabidiol | |
| CN103463123B (en) | Method for extracting effective constituents from maca | |
| CN101855330B (en) | Extractions of fixed oil and thymoquinone rich fractions (TQRF) | |
| CN102504957A (en) | Method for preparing essential oils | |
| CN101744886B (en) | Method for extracting high-purity schisandra total lignan | |
| CN108998248A (en) | A kind of industrial hemp floral leaf absolute oil preparation method rich in cannabidiol | |
| CN102676299A (en) | Reinforced extraction method for lavender essential oil | |
| CN102925291A (en) | Variable pressure distillation method for extracting pythoncidere and essential oil from Chamaecyparis plants | |
| CN104490966B (en) | A kind of method of remains of pesticide in removing extract of Radix Ginseng stem and leaf | |
| CN102432582A (en) | Preparation method of proanthocyanidin | |
| CN101781606A (en) | Extraction method of rosa rugosa essential oil | |
| CN103627528A (en) | Method for extracting lavender essential oil | |
| CN105176688A (en) | Method for extracting eucalyptus oil | |
| CN105062686A (en) | Method for extracting lavender essential oil | |
| CN103450808A (en) | Method for extracting ginger oleoresin by adopting subcritical fluid butane | |
| CN103087828B (en) | A kind of Yunnan black tea essential oil and preparation method thereof | |
| CN105087166A (en) | Method for extracting Jasminum sambac essential oil | |
| CN102100875A (en) | Process method for microwave assistant supercritical extraction of active ingredients of curcuma | |
| CN103275049B (en) | Method for preparing myricetin by using vine tea and application of pyrosulfite | |
| CN109021042B (en) | Method for extracting high-purity oleuropein from olive leaves | |
| CN102040612A (en) | Method for extracting bergamottin from grapefruit peel | |
| CN111116322A (en) | Method for extracting cannabidiol beneficial to human health from industrial cannabis sativa | |
| CN103146473A (en) | Method for simultaneously extracting Australian tea tree essential oil and flavonoid glycosides | |
| CN102533446B (en) | Method for removing furocoumarins from citrus essential oil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130313 |