CN113185381A - Method for separating and extracting linalool by taking camphor tree leaves as raw materials through high-speed countercurrent chromatography - Google Patents
Method for separating and extracting linalool by taking camphor tree leaves as raw materials through high-speed countercurrent chromatography Download PDFInfo
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- CN113185381A CN113185381A CN202110421849.6A CN202110421849A CN113185381A CN 113185381 A CN113185381 A CN 113185381A CN 202110421849 A CN202110421849 A CN 202110421849A CN 113185381 A CN113185381 A CN 113185381A
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- camphor tree
- tree leaves
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- 241000723346 Cinnamomum camphora Species 0.000 title claims abstract description 90
- CDOSHBSSFJOMGT-UHFFFAOYSA-N linalool Chemical compound CC(C)=CCCC(C)(O)C=C CDOSHBSSFJOMGT-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000001490 (3R)-3,7-dimethylocta-1,6-dien-3-ol Substances 0.000 title claims abstract description 35
- CDOSHBSSFJOMGT-JTQLQIEISA-N (R)-linalool Natural products CC(C)=CCC[C@@](C)(O)C=C CDOSHBSSFJOMGT-JTQLQIEISA-N 0.000 title claims abstract description 35
- 229930007744 linalool Natural products 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000010262 high-speed countercurrent chromatography Methods 0.000 title claims abstract description 26
- 239000002994 raw material Substances 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 230000006378 damage Effects 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 22
- 241000238631 Hexapoda Species 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000012046 mixed solvent Substances 0.000 claims abstract description 16
- 238000012216 screening Methods 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 230000007547 defect Effects 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 10
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 230000006837 decompression Effects 0.000 claims description 2
- 239000000654 additive Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 230000000996 additive effect Effects 0.000 abstract description 2
- 238000004821 distillation Methods 0.000 description 5
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 1
- PXRCIOIWVGAZEP-UHFFFAOYSA-N Camphene hydrate Chemical compound C1CC2C(O)(C)C(C)(C)C1C2 PXRCIOIWVGAZEP-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000019568 aromas Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960000846 camphor Drugs 0.000 description 1
- 229930008380 camphor Natural products 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- -1 terpene alcohols Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a method for separating and extracting linalool by taking camphor tree leaves as raw materials through high-speed countercurrent chromatography, which comprises the following steps: the method comprises the following steps: picking high-quality camphor tree leaves, checking whether local withering and insect damage exist on the surfaces of the camphor tree leaves, and if so, removing the defect; step two: drying the camphor tree leaves obtained in the step one, and adding the camphor tree leaves into crushing equipment to be crushed to 95-110 meshes to obtain a powdery material; step three: adding a mixed solvent into the powdery material, heating and stirring, filtering the liquid to remove solid impurities in the liquid, and collecting the filtered liquid to obtain turbid liquid; step four: distilling and extracting the turbid liquid to obtain an extract; through the screening to camphor tree leaf raw materials, can improve finished product quality and output under the prerequisite that reduces additive content to make the chemical substance content in the later stage finished product lower, and reduced the harm degree of finished product self, make harm reduce to qualified within range.
Description
Technical Field
The invention belongs to the technical field of linalool extraction, and particularly relates to a method for separating and extracting linalool by taking camphor leaves as a raw material through high-speed counter-current chromatography.
Background
Linalool, molecular formula C10H18O, belongs to chain terpene alcohols, and has two isomers of alpha-and beta-isomers. Colorless liquid, with muguet aroma, but different aromas depending on the source. Among the most commonly used and most used fragrances discharged every year in the world, linalool is discharged first in the year, and in the extraction of linalool, the adopted raw materials also have differences according to different processing modes, including the process for extracting camphor tree leaves as raw materials
When having now with camphor tree leaf as the high-speed countercurrent chromatography separation of raw materials and draw linalool, more emphasis increases various additives in later stage draws and guarantees the finished product quality, and this kind of mode cost is great, contains a large amount of chemicals in the finished product of simultaneously extracting, leads to producing great harm easily in the later stage use to and in the processing in later stage, common mode of mentioning is the distillation, but the finished product purity is lower, also has great limitation in the use in later stage.
Disclosure of Invention
The invention aims to provide a method for separating and extracting linalool by taking camphor tree leaves as a raw material through high-speed countercurrent chromatography, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for separating and extracting linalool from camphor tree leaves by high-speed countercurrent chromatography comprises the following steps:
the method comprises the following steps: picking high-quality camphor tree leaves, checking whether local withering and insect damage exist on the surfaces of the camphor tree leaves, and if so, removing the defect;
step two: drying the camphor tree leaves obtained in the step one, and adding the camphor tree leaves into crushing equipment to be crushed to 95-110 meshes to obtain a powdery material;
step three: adding a mixed solvent into the powdery material, heating and stirring, filtering the liquid to remove solid impurities in the liquid, and collecting the filtered liquid to obtain turbid liquid;
step four: distilling and extracting the turbid liquid to obtain an extract;
step five: separating the extract by high speed countercurrent chromatography, and collecting the liquid extract;
step six: and (3) placing the liquid extract in a rotary evaporator for decompression concentration, controlling the vacuum degree to be 0.05-0.07 Mpa, and evaporating at the temperature of 60-90 ℃ to obtain the high-purity linalool.
Preferably, the picking step of the high-quality camphor tree leaves in the step one is as follows:
s1: selecting camphor trees which grow healthily and have the planting age of more than 4 years;
s2: picking leaves towards the sunny direction;
s3: randomly sampling picked camphor tree leaves, and carrying out independent oil content detection on the camphor tree leaves at the sampling position, wherein the camphor tree leaves are qualified products when the oil content is 70-100%.
Preferably, in the second step, a screening device is required to be added, the crushed powdery material is filtered by the screening device, and the material which is not completely crushed is placed in the crushing device again for processing.
Preferably, in the third step, the heating temperature is 70-90 ℃, the heating time is 4-6 h, and the stirring speed is 30-50 r/min.
Preferably, the ratio of the mixed solvent to the powder in the step three is 3: 1.
preferably, the mixed solvent in the third step comprises at least two of ethanol, n-butanol, ethyl acetate, methyl formate and isopropanol.
Preferably, in the first step, when the camphor tree leaves have local withering and insect damage and are removed, the removal range diameter exceeds 0.5-1.5 times of the diameter of the damaged part by taking the midpoint of the local withering and insect damage as an origin.
Preferably, the drying manner in the second step is as follows:
i: laying a film for placing camphor tree leaves on the ground of a dust-free workshop, and uniformly laying the camphor tree leaves;
II: the thickness of laying is 3-5 cm3Then drying in the shade for 4-6 h;
III: and (3) placing the dried camphor tree leaves in a drying box, and drying for 30-50 min at 80-130 ℃ to obtain finished products.
Compared with the prior art, the invention has the beneficial effects that:
through the screening to camphor tree leaf raw materials, can improve finished product quality and output under the prerequisite that reduces additive content, thereby make the chemical content in the later stage finished product lower, and reduced the harm degree of finished product self, make harm reduce to qualified scope, extract through the mode that combines together distillation and high-speed countercurrent chromatography simultaneously, the linalool purity that obtains is higher, can use in the later stage, be applied to all trades through diluting, perfect current linalool in use not enough.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a technical scheme that: a method for separating and extracting linalool from camphor tree leaves by high-speed countercurrent chromatography comprises the following steps:
the method comprises the following steps: picking high-quality camphor tree leaves, checking whether local withering and insect damage exist on the surfaces of the camphor tree leaves, and if so, removing the defect;
step two: drying the camphor tree leaves obtained in the step one, and adding the camphor tree leaves into crushing equipment to be crushed to 95 meshes to obtain powdery materials;
step three: adding a mixed solvent into the powdery material, heating and stirring, filtering the liquid to remove solid impurities in the liquid, and collecting the filtered liquid to obtain turbid liquid;
step four: distilling and extracting the turbid liquid to obtain an extract;
step five: separating the extract by adopting a high-speed counter-current chromatography, collecting a liquid extract, and extracting by combining distillation and the high-speed counter-current chromatography, wherein the obtained linalool has higher purity, can be applied to various industries by dilution in later use, and overcomes the defects of the prior linalool in use;
step six: concentrating the liquid extract in a rotary evaporator under reduced pressure, controlling vacuum degree at 0.05Mpa, and evaporating at 60 deg.C to obtain high purity linalool.
In this embodiment, preferably, the picking step of the high-quality camphor tree leaves in the step one is as follows:
s1: selecting camphor trees which grow healthily and have the planting age of more than 4 years;
s2: picking leaves towards the sunny direction;
s3: the camphor tree leaves to be picked are randomly sampled, the camphor tree leaves at the sampling position are subjected to independent oil content detection, qualified products are obtained when the oil content is 70%, the quality and the yield of finished products can be improved on the premise of reducing the content of additives by screening the camphor tree leaves as raw materials, so that the content of chemical substances in later-stage finished products is low, the degree of harm of the finished products is reduced, and the harm is reduced to the qualified range.
In this embodiment, preferably, in the second step, a screening device needs to be added, the pulverized powdery material is filtered by the screening device, and the material which is not completely pulverized is placed in the pulverizing device again for processing.
In this embodiment, preferably, in step three, the heating temperature is 70 ℃, the heating time is 4h, and the stirring speed is 30 r/min.
In this embodiment, preferably, the ratio of the mixed solvent to the powder in step three is 3: 1.
in this embodiment, preferably, the mixed solvent in step three includes ethanol, n-butanol, and ethyl acetate.
In this embodiment, preferably, in the step one, when the camphor tree leaves have local withering and insect damage for removal, the removal range diameter exceeds 0.5 times of the diameter of the damaged part by taking the midpoint of the local withering and insect damage as an origin.
In this embodiment, preferably, the drying manner in the second step is as follows:
i: laying a film for placing camphor tree leaves on the ground of a dust-free workshop, and uniformly laying the camphor tree leaves;
II: the thickness of the paving is 3cm3Then drying in the shade for 4 h;
III: and (3) placing the dried camphor tree leaves in a drying box, and drying for 30min at 80 ℃ to obtain the finished product.
Example 2
The invention provides a technical scheme that: a method for separating and extracting linalool from camphor tree leaves by high-speed countercurrent chromatography comprises the following steps:
the method comprises the following steps: picking high-quality camphor tree leaves, checking whether local withering and insect damage exist on the surfaces of the camphor tree leaves, and if so, removing the defect;
step two: drying the camphor tree leaves obtained in the step one, and adding the camphor tree leaves into crushing equipment to be crushed to 100 meshes to obtain powdery materials;
step three: adding a mixed solvent into the powdery material, heating and stirring, filtering the liquid to remove solid impurities in the liquid, and collecting the filtered liquid to obtain turbid liquid;
step four: distilling and extracting the turbid liquid to obtain an extract;
step five: separating the extract by adopting a high-speed counter-current chromatography, collecting a liquid extract, and extracting by combining distillation and the high-speed counter-current chromatography, wherein the obtained linalool has higher purity, can be applied to various industries by dilution in later use, and overcomes the defects of the prior linalool in use;
step six: concentrating the liquid extract in a rotary evaporator under reduced pressure, controlling vacuum degree at 0.06Mpa, and evaporating at 80 deg.C to obtain high purity linalool.
In this embodiment, preferably, the picking step of the high-quality camphor tree leaves in the step one is as follows:
s1: selecting camphor trees which grow healthily and have the planting age of more than 4 years;
s2: picking leaves towards the sunny direction;
s3: the camphor tree leaves to be picked are randomly sampled, the camphor tree leaves at the sampling position are subjected to independent oil content detection, qualified products are obtained when the oil content is 80%, the quality and the yield of finished products can be improved on the premise of reducing the content of additives by screening the camphor tree leaves as raw materials, so that the content of chemical substances in later-stage finished products is low, the degree of harm of the finished products is reduced, and the harm is reduced to the qualified range.
In this embodiment, preferably, in the second step, a screening device needs to be added, the pulverized powdery material is filtered by the screening device, and the material which is not completely pulverized is placed in the pulverizing device again for processing.
In this embodiment, preferably, in step three, the heating temperature is 80 ℃, the heating time is 5h, and the stirring speed is 40 r/min.
In this embodiment, preferably, the ratio of the mixed solvent to the powder in step three is 3: 1.
in this embodiment, preferably, the mixed solvent in step three includes ethanol, n-butanol, ethyl acetate, and methyl formate.
In this embodiment, preferably, in the step one, when the camphor tree leaves have local withering and insect damage for removal, the removal range diameter exceeds 1.2 times of the diameter of the damaged part by taking the midpoint of the local withering and insect damage as an origin.
In this embodiment, preferably, the drying manner in the second step is as follows:
i: laying a film for placing camphor tree leaves on the ground of a dust-free workshop, and uniformly laying the camphor tree leaves;
II: the thickness of the paving is 4cm3Then drying in the shade for 5 h;
III: and (3) placing the dried camphor tree leaves in a drying box, and drying for 40min at 100 ℃ to obtain the finished product.
Example 3
The invention provides a technical scheme that: a method for separating and extracting linalool from camphor tree leaves by high-speed countercurrent chromatography comprises the following steps:
the method comprises the following steps: picking high-quality camphor tree leaves, checking whether local withering and insect damage exist on the surfaces of the camphor tree leaves, and if so, removing the defect;
step two: drying the camphor tree leaves obtained in the step one, and adding the camphor tree leaves into crushing equipment to be crushed to 110 meshes to obtain powdery materials;
step three: adding a mixed solvent into the powdery material, heating and stirring, filtering the liquid to remove solid impurities in the liquid, and collecting the filtered liquid to obtain turbid liquid;
step four: distilling and extracting the turbid liquid to obtain an extract;
step five: separating the extract by adopting a high-speed counter-current chromatography, collecting a liquid extract, and extracting by combining distillation and the high-speed counter-current chromatography, wherein the obtained linalool has higher purity, can be applied to various industries by dilution in later use, and overcomes the defects of the prior linalool in use;
step six: concentrating the liquid extract in a rotary evaporator under reduced pressure, controlling vacuum degree at 0.07Mpa, and evaporating at 90 deg.C to obtain high purity linalool.
In this embodiment, preferably, the picking step of the high-quality camphor tree leaves in the step one is as follows:
s1: selecting camphor trees which grow healthily and have the planting age of more than 4 years;
s2: picking leaves towards the sunny direction;
s3: the camphor tree leaves to be picked are randomly sampled, the camphor tree leaves at the sampling position are subjected to independent oil content detection, qualified products are obtained when the oil content is 70%, the quality and the yield of finished products can be improved on the premise of reducing the content of additives by screening the camphor tree leaves as raw materials, so that the content of chemical substances in later-stage finished products is low, the degree of harm of the finished products is reduced, and the harm is reduced to the qualified range.
In this embodiment, preferably, in the second step, a screening device needs to be added, the pulverized powdery material is filtered by the screening device, and the material which is not completely pulverized is placed in the pulverizing device again for processing.
In this embodiment, preferably, in step three, the heating temperature is 90 ℃, the heating time is 6h, and the stirring speed is 50 r/min.
In this embodiment, preferably, the ratio of the mixed solvent to the powder in step three is 3: 1.
in this embodiment, preferably, the mixed solvent in step three includes ethanol, n-butanol, ethyl acetate, methyl formate, and isopropanol.
In this embodiment, preferably, in the step one, when the camphor tree leaves have local withering and insect damage for removal, the removal range diameter exceeds 1.5 times of the diameter of the damaged part by taking the midpoint of the local withering and insect damage as an origin.
In this embodiment, preferably, the drying manner in the second step is as follows:
i: laying a film for placing camphor tree leaves on the ground of a dust-free workshop, and uniformly laying the camphor tree leaves;
II: the thickness of the paving is 5cm3Then drying in the shade for 6 h;
III: and (3) placing the dried camphor tree leaves in a drying box, and drying for 50min at 130 ℃ to obtain the finished product.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A method for separating and extracting linalool by taking camphor tree leaves as raw materials through high-speed countercurrent chromatography is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: picking high-quality camphor tree leaves, checking whether local withering and insect damage exist on the surfaces of the camphor tree leaves, and if so, removing the defect;
step two: drying the camphor tree leaves obtained in the step one, and adding the camphor tree leaves into crushing equipment to be crushed to 95-110 meshes to obtain a powdery material;
step three: adding a mixed solvent into the powdery material, heating and stirring, filtering the liquid to remove solid impurities in the liquid, and collecting the filtered liquid to obtain turbid liquid;
step four: distilling and extracting the turbid liquid to obtain an extract;
step five: separating the extract by high speed countercurrent chromatography, and collecting the liquid extract;
step six: and (3) placing the liquid extract in a rotary evaporator for decompression concentration, controlling the vacuum degree to be 0.05-0.07 Mpa, and evaporating at the temperature of 60-90 ℃ to obtain the high-purity linalool.
2. The method for separating and extracting linalool from camphor tree leaves by high-speed countercurrent chromatography according to claim 1, wherein the method comprises the following steps: the picking step of the high-quality camphor tree leaves in the first step is as follows:
s1: selecting camphor trees which grow healthily and have the planting age of more than 4 years;
s2: picking leaves towards the sunny direction;
s3: randomly sampling picked camphor tree leaves, and carrying out independent oil content detection on the camphor tree leaves at the sampling position, wherein the camphor tree leaves are qualified products when the oil content is 70-100%.
3. The method for separating and extracting linalool from camphor tree leaves by high-speed countercurrent chromatography according to claim 1, wherein the method comprises the following steps: in the second step, screening equipment is required to be added, the crushed powdery material is filtered by the screening equipment, and the material which is not completely crushed is placed in the crushing equipment again for processing.
4. The method for separating and extracting linalool from camphor tree leaves by high-speed countercurrent chromatography according to claim 1, wherein the method comprises the following steps: in the third step, the heating temperature is 70-90 ℃, the heating time is 4-6 h, and the stirring speed is 30-50 r/min.
5. The method for separating and extracting linalool from camphor tree leaves by high-speed countercurrent chromatography according to claim 1, wherein the method comprises the following steps: the ratio of the mixed solvent to the powder in the third step is 3: 1.
6. the method for separating and extracting linalool from camphor tree leaves as raw materials according to claim 5, wherein the method comprises the following steps: the mixed solvent in the third step comprises at least two of ethanol, n-butanol, ethyl acetate, methyl formate and isopropanol.
7. The method for separating and extracting linalool from camphor tree leaves by high-speed countercurrent chromatography according to claim 1, wherein the method comprises the following steps: in the first step, when the camphor tree leaves have local withering and insect damage to be removed, the midpoint of the local withering and insect damage is used as an origin, and the diameter of a removal range exceeds 0.5-1.5 times of the diameter of a damaged part.
8. The method for separating and extracting linalool from camphor tree leaves by high-speed countercurrent chromatography according to claim 1, wherein the method comprises the following steps: the drying mode in the second step is as follows:
i: laying a film for placing camphor tree leaves on the ground of a dust-free workshop, and uniformly laying the camphor tree leaves;
II: the thickness of laying is 3-5 cm3Then drying in the shade for 4-6 h;
III: and (3) placing the dried camphor tree leaves in a drying box, and drying for 30-50 min at 80-130 ℃ to obtain finished products.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619013A (en) * | 2002-04-12 | 2010-01-06 | 厦门牡丹香化实业有限公司 | Method for distilling and extracting natural linalool from Cinnamomum camphora leaves |
| CN102531845A (en) * | 2011-12-31 | 2012-07-04 | 江西思派思香料化工有限公司 | Preparation method for high-purity natural linalool |
| CN106146257A (en) * | 2016-06-29 | 2016-11-23 | 广西壮族自治区林业科学研究院 | A kind of method extracting high-purity linalool |
| CN110803979A (en) * | 2019-11-21 | 2020-02-18 | 江西思派思香料化工有限公司 | Natural linalool extraction technology |
-
2021
- 2021-04-20 CN CN202110421849.6A patent/CN113185381A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619013A (en) * | 2002-04-12 | 2010-01-06 | 厦门牡丹香化实业有限公司 | Method for distilling and extracting natural linalool from Cinnamomum camphora leaves |
| CN102531845A (en) * | 2011-12-31 | 2012-07-04 | 江西思派思香料化工有限公司 | Preparation method for high-purity natural linalool |
| CN106146257A (en) * | 2016-06-29 | 2016-11-23 | 广西壮族自治区林业科学研究院 | A kind of method extracting high-purity linalool |
| CN110803979A (en) * | 2019-11-21 | 2020-02-18 | 江西思派思香料化工有限公司 | Natural linalool extraction technology |
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| Title |
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