CN114437870A - Extraction preparation process of essential oil of Abelmoschus manihot - Google Patents
Extraction preparation process of essential oil of Abelmoschus manihot Download PDFInfo
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- CN114437870A CN114437870A CN202111575398.8A CN202111575398A CN114437870A CN 114437870 A CN114437870 A CN 114437870A CN 202111575398 A CN202111575398 A CN 202111575398A CN 114437870 A CN114437870 A CN 114437870A
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- hibiscus
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- 238000000605 extraction Methods 0.000 title claims abstract description 46
- 239000000341 volatile oil Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 240000005959 Abelmoschus manihot Species 0.000 title claims description 15
- 235000001075 Abelmoschus manihot Nutrition 0.000 title claims description 15
- 241000451942 Abutilon sonneratianum Species 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000012535 impurity Substances 0.000 claims abstract description 14
- 244000048199 Hibiscus mutabilis Species 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 13
- 235000003973 Hibiscus mutabilis Nutrition 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 244000070990 Gomphocarpus physocarpus Species 0.000 claims description 7
- 235000004342 Gossypium thurberi Nutrition 0.000 claims description 7
- 241000220317 Rosa Species 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010298 pulverizing process Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 4
- 238000010025 steaming Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 10
- 229930003935 flavonoid Natural products 0.000 description 6
- 235000017173 flavonoids Nutrition 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 150000002215 flavonoids Chemical class 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- GVJHHUAWPYXKBD-UHFFFAOYSA-N (±)-α-Tocopherol Chemical compound OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 description 2
- 235000005206 Hibiscus Nutrition 0.000 description 2
- 235000007185 Hibiscus lunariifolius Nutrition 0.000 description 2
- 244000284380 Hibiscus rosa sinensis Species 0.000 description 2
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 2
- -1 flavonoid compounds Chemical class 0.000 description 2
- 235000020778 linoleic acid Nutrition 0.000 description 2
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000001256 steam distillation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- OVSQVDMCBVZWGM-SJWGPRHPSA-N Hyperin Natural products O[C@H]1[C@H](O)[C@@H](O)[C@@H](CO)O[C@H]1OC1=C(C=2C=C(O)C(O)=CC=2)OC2=CC(O)=CC(O)=C2C1=O OVSQVDMCBVZWGM-SJWGPRHPSA-N 0.000 description 1
- FVQOMEDMFUMIMO-UHFFFAOYSA-N Hyperosid Natural products OC1C(O)C(O)C(CO)OC1OC1C(=O)C2=C(O)C=C(O)C=C2OC1C1=CC=C(O)C(O)=C1 FVQOMEDMFUMIMO-UHFFFAOYSA-N 0.000 description 1
- 244000278530 Philodendron bipinnatifidum Species 0.000 description 1
- 235000018976 Philodendron bipinnatifidum Nutrition 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 229930003427 Vitamin E Natural products 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 description 1
- 235000020661 alpha-linolenic acid Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 235000013325 dietary fiber Nutrition 0.000 description 1
- 230000009982 effect on human Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229960004488 linolenic acid Drugs 0.000 description 1
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 235000020777 polyunsaturated fatty acids Nutrition 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- OVSQVDMCBVZWGM-DTGCRPNFSA-N quercetin 3-O-beta-D-galactopyranoside Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1OC1=C(C=2C=C(O)C(O)=CC=2)OC2=CC(O)=CC(O)=C2C1=O OVSQVDMCBVZWGM-DTGCRPNFSA-N 0.000 description 1
- BBFYUPYFXSSMNV-UHFFFAOYSA-N quercetin-7-o-galactoside Natural products OC1C(O)C(O)C(CO)OC1OC1=CC(O)=C2C(=O)C(O)=C(C=3C=C(O)C(O)=CC=3)OC2=C1 BBFYUPYFXSSMNV-UHFFFAOYSA-N 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/02—Recovery or refining of essential oils from raw materials
- C11B9/025—Recovery by solvent extraction
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses an extraction preparation process of essential oil of cotton rose hibiscus, which comprises the following steps: cleaning wild hibiscus seeds and petals, performing steam treatment on the wild hibiscus petals, and drying; crushing; adding the crushed raw materials into water, and infiltrating to obtain a water extracting solution and impurities; adding the impurities and the water extract into an extraction kettle, and extracting to obtain the essential oil of the cotton rose. The invention belongs to the technical field of essential oil preparation, and particularly provides an extraction preparation process of wild hibiscus essential oil, which can accelerate the flow of the extraction process, increases the overall utilization rate of wild hibiscus, is simple to operate, has high efficiency and low energy consumption, and is environment-friendly by simultaneously extracting seeds and petals.
Description
Technical Field
The invention belongs to the technical field of essential oil extraction processes, and particularly relates to an extraction preparation process of essential oil of cotton rose hibiscus.
Background
Abelmoschus manihot, named Abelmoschus manihot, belongs to Abelmoschus manihot family, and is a large annual herbaceous plant. Wild hibiscus is known as a panda plant and heart-saving herb in life because the wild hibiscus contains various bioactive substances, and the main components of the wild hibiscus comprise natural flavonoid compounds, unsaturated fatty acids (linoleic acid and linolenic acid) vitamin E, polyunsaturated fatty acids, high-polysaccharide gum, dietary fibers, trace elements such as selenium, zinc, calcium and various unsaponifiables. The natural flavonoid and the linoleic acid are nutrient substances which are necessary for human bodies, cannot be synthesized by self and have health care effect on human bodies and must be taken by diet. The wild hibiscus seeds are rich in total flavonoids, wherein the rare flavonoid monomer hyperin accounts for more than 50% of the total flavonoids.
At present, extraction methods of essential oil generally comprise a steam distillation method and an organic solvent extraction method, but the direct steam distillation method and the organic solvent extraction method have the problems of long extraction time, high energy consumption, low yield, environmental pollution and the like, and the extraction process adopts a toxic organic solvent, has high extraction temperature and causes oxidation damage to components, so that the obtained product has poor quality and low purity, and the problems of organic solvent residue harmful to human bodies and the like exist.
However, the direct use of the wild hibiscus seed oil basically has no flavonoid compounds, and the wild hibiscus seed oil, the stems and the leaves have less content of the sterone compounds, so that how to extract the essential oil with no pollution and complete component preservation from the wild hibiscus is very important.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the extraction preparation process of the essential oil of the wild hibiscus, which can accelerate the flow of the extraction process, utilizes the seeds and the petals to perform extraction simultaneously, increases the overall utilization rate of the wild hibiscus, and has the advantages of simple operation, high efficiency, low energy consumption and environmental protection.
The technical scheme adopted by the invention is as follows: the invention relates to an extraction preparation process of essential oil of cotton rose, which comprises the following steps:
step one, preparing raw materials: collecting mature wild hibiscus seeds and fresh wild hibiscus petals, cleaning, and drying in a constant temperature oven for 2.5-5h to dry the seeds and the petals;
step two, crushing: pulverizing dried seeds and petals of Abelmoschus manihot into 50-80 mesh granules by a pulverizer;
step three, extraction: adding pulverized wild hibiscus seed and petal into water, soaking at 50-70 deg.C for 2-5 hr, separating to obtain water extractive solution and petal seed impurities;
step four, extraction: adding petal seed impurities and water extract into extraction kettle, heating to 50-75 deg.C, dynamically extracting under 5-10MPa for 1.5-2.5 hr, extracting with supercritical fluid, and regulating flow rate of water extract to 0.4-0.7m3And h, keeping the constant temperature and the constant pressure for 1-2h, discharging, and performing oil-water separation to obtain the essential oil of the wild cotton rose.
Preferably, the scheme further comprises centrifugation or filtration, wherein the rotation speed of the centrifugation is 6000-.
Preferably, in the first step, the wild hibiscus petals are subjected to steam treatment on a steaming tray at the temperature of 120-.
Further, the temperature for drying in the oven in the first step is maintained at 70-90 ℃.
Furthermore, the solid-to-liquid ratio of the wild hibiscus seeds, the wild hibiscus petals and the water in the third step is 1g/5 mL.
Further, the fresh wild hibiscus petals in the step one are petals to be opened or to be opened.
The invention relates to an extraction preparation process of essential oil of cotton rose, which has the following beneficial effects by adopting the scheme:
1. the steam treatment is carried out on the wild hibiscus petals in advance, so that the flow of the extraction preparation process is accelerated.
2. The wild hibiscus petals and the wild hibiscus seeds are extracted, so that the loss of materials is reduced, and the effect of changing waste into valuable is achieved.
3. The extraction process is safe and harmless, the whole preparation process is relatively environment-friendly, and the extracted essential oil of the cotton rose is relatively high in purity and relatively good in quality.
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.
The invention relates to an extraction preparation process of essential oil of cotton rose, which comprises the following steps:
step one, preparing raw materials: collecting mature wild hibiscus seeds and fresh wild hibiscus petals, cleaning, and drying in a constant temperature oven for 2.5-5h to dry the seeds and the petals;
step two, crushing: pulverizing dried seeds and petals of Abelmoschus manihot into 50-80 mesh granules by a pulverizer;
step three, extraction: adding pulverized wild hibiscus seed and petal into water, soaking at 50-70 deg.C for 2-5 hr, separating to obtain water extractive solution and petal seed impurities;
step four, extraction: adding petal seed impurities and water extract into extraction kettle, heating to 50-75 deg.C, dynamically extracting under 5-10MPa for 1.5-2.5 hr, extracting with supercritical fluid, and regulating flow rate of water extract to 0.4-0.7m3And h, keeping the constant temperature and the constant pressure for 1-2h, discharging, and performing oil-water separation to obtain the essential oil of the wild cotton rose.
Embodiment 1, the extraction preparation process of essential oil of cotton rose hibiscus of the present invention comprises the following steps:
step one, preparing raw materials: collecting mature wild hibiscus seeds and fresh wild hibiscus petals, cleaning, then carrying out steam treatment on the wild hibiscus petals on a steaming tray with the temperature of 120-150 ℃ for 40-60s by adopting a steam treatment method after cleaning, then drying the wild hibiscus seeds and the steam-treated wild hibiscus petals in a constant temperature oven for 2.5-5h, and keeping the drying temperature in the constant temperature oven at 70-90 ℃ to enable the wild hibiscus seeds and the steam-treated wild hibiscus petals to be in a dry state;
step two, crushing: pulverizing dried seeds and petals of Abelmoschus manihot into 50-80 mesh granules by a pulverizer;
step three, extraction: adding pulverized wild hibiscus seeds and petals into water, wherein the solid-to-liquid ratio of the wild hibiscus seeds to the wild hibiscus petals to the water is 1g/5mL, soaking at 50-70 ℃ for 2-5h, and separating to obtain a water extract and extracted petal seed impurities respectively;
step four, extraction: adding petal seed impurities and water extract into extraction kettle, heating to 50-75 deg.C, dynamically extracting under 5-10MPa for 1.5-2.5 hr, extracting with supercritical fluid, and regulating flow rate of water extract to 0.4-0.7m3And h, keeping the constant temperature and the constant pressure for 1-2h, discharging, and performing oil-water separation to obtain the essential oil of the wild cotton rose.
In the case of the example 2, the following examples are given,
step one, preparing raw materials: collecting mature wild hibiscus seeds and fresh wild hibiscus petals, cleaning, and drying in a constant temperature oven for 2.5-5h, wherein the drying temperature in the constant temperature oven is kept at 70-90 ℃ to enable the wild hibiscus seeds and the fresh wild hibiscus petals to reach a dry state;
step two, crushing: pulverizing dried seeds and petals of Abelmoschus manihot into 50-80 mesh granules by a pulverizer;
step three, extraction: adding pulverized Abelmoschus manihot seeds and petals into water, wherein the solid-to-liquid ratio of Abelmoschus manihot seeds, Abelmoschus manihot petals to water is 1g/5mL, soaking at 50-70 deg.C for 2-5 hr, and separating to obtain water extractive solution and petal seed impurities;
step four, extraction: adding petal seed impurities and water extract into extraction kettle, heating to 50-75 deg.C, dynamically extracting under 5-10MPa for 1.5-2.5 hr, extracting with supercritical fluid, and regulating flow rate of water extract to 0.4-0.7m3And h, keeping the constant temperature and the constant pressure for 1-2h, discharging, and performing oil-water separation to obtain the essential oil of the wild cotton rose.
Example 2 differs from example 1 in that:
in the first step, the wild hibiscus seeds and the wild hibiscus petals are directly sent into a constant temperature oven for drying after being cleaned without carrying out steam treatment on the wild hibiscus petals.
In the case of the example 3, the following examples are given,
step one, preparing raw materials: collecting mature wild hibiscus seeds, cleaning, and drying in a constant temperature oven for 2.5-5h, wherein the drying temperature in the constant temperature oven is kept at 70-90 ℃ to enable the wild hibiscus seeds to reach a dry state;
step two, crushing: pulverizing the dried Abelmoschus manihot seeds into 50-80 mesh granules by a pulverizer;
step three, extraction: adding pulverized wild hibiscus seeds into water, wherein the solid-to-liquid ratio of the wild hibiscus seeds to the water is 1g/5mL, soaking at 50-70 ℃ for 2-5h, and separating to obtain a water extract and extracted seed impurities respectively;
step four, extraction: adding seed impurities and water extract into extraction kettleHeating to 50-75 deg.C, dynamically extracting under 5-10MPa for 1.5-2.5 hr, extracting with supercritical fluid, and regulating flow rate of water extractive solution to 0.4-0.7m3And h, keeping the constant temperature and the constant pressure for 1-2h, discharging, and performing oil-water separation to obtain the essential oil of the wild cotton rose.
Example 3 differs from example 1 in that:
in the selection of the raw materials in the step one, the raw materials are changed to only select the wild hibiscus seeds, and the wild hibiscus petals are not selected.
When the product of example 2 is compared with the product of example 1, under the condition that the quality of the raw materials is the same, the quality of the wild cotton rose essential oil of the product of example 1 is more than that of example 2, and the time of the extraction process of example 1 is shorter than that of example 2.
After comparing the product of example 3 with the product of example 1, the purity of the essential oil of the two products is basically consistent.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. An extraction preparation process of essential oil of Abelmoschus manihot, which is characterized by comprising the following steps:
step one, preparing raw materials: collecting mature wild hibiscus seeds and fresh wild hibiscus petals, cleaning, and drying in a constant temperature oven for 2.5-5h to dry the seeds and the petals;
step two, crushing: pulverizing dried seeds and petals of Abelmoschus manihot into 50-80 mesh granules by a pulverizer;
step three, extraction: adding pulverized wild hibiscus seed and petal into water, soaking at 50-70 deg.C for 2-5 hr, separating to obtain water extractive solution and petal seed impurities;
step four, extraction: adding petal seed impurities and water extractive solution into extraction kettle, heating to 50-75 deg.C, dynamically extracting under 5-10MPa for 1.5-2.5 hr, extracting with supercritical liquid, and regulating flow rate of water extractive solution to 0.4-0.7m3And h, keeping the constant temperature and the constant pressure for 1-2h, discharging, and performing oil-water separation to obtain the essential oil of the wild cotton rose.
2. The extraction preparation process of essential oil of Hibiscus mutabilis according to claim 1, which is characterized by comprising the following steps: the step also comprises centrifugation or filtration, the rotation speed of the centrifugation is 6000-.
3. The extraction preparation process of essential oil of Hibiscus mutabilis according to claim 1, which is characterized by comprising the following steps: in the first step, the wild hibiscus petals are subjected to steam treatment on a steaming tray at the temperature of 120-.
4. The extraction preparation process of essential oil of Hibiscus mutabilis according to claim 1, which is characterized by comprising the following steps: the temperature of the drying in the incubator in the first step is kept between 70 and 90 ℃.
5. The extraction preparation process of essential oil of Hibiscus mutabilis according to claim 1, which is characterized by comprising the following steps: the solid-to-liquid ratio of the wild hibiscus seeds, the wild hibiscus petals and the water in the third step is 1g/5 mL.
6. The extraction preparation process of essential oil of Hibiscus mutabilis according to claim 1, which is characterized by comprising the following steps: the fresh wild hibiscus petals in the step one are petals to be opened or to be opened.
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| CN202111575398.8A CN114437870A (en) | 2021-12-22 | 2021-12-22 | Extraction preparation process of essential oil of Abelmoschus manihot |
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| CN114437870A true CN114437870A (en) | 2022-05-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766535A (en) * | 2012-08-01 | 2012-11-07 | 河南华美生物工程有限公司 | Method for extracting peony oil by water |
| CN103333741A (en) * | 2013-07-18 | 2013-10-02 | 苏州市天灵中药饮片有限公司 | Preparation method for subcritical fennel essential oil water extraction |
| CN106190554A (en) * | 2016-07-22 | 2016-12-07 | 许备占 | The preparation method of Wild cottonrose hibiscus extract oil |
| CN108219959A (en) * | 2018-03-07 | 2018-06-29 | 安徽心缘康生物科技有限公司 | A kind of method that essential oil is extracted from peony petal |
| AU2020103254A4 (en) * | 2020-11-05 | 2021-01-14 | Nanjing Forestry University | A supercritical extraction method of wax from bamboo green skin |
-
2021
- 2021-12-22 CN CN202111575398.8A patent/CN114437870A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766535A (en) * | 2012-08-01 | 2012-11-07 | 河南华美生物工程有限公司 | Method for extracting peony oil by water |
| CN103333741A (en) * | 2013-07-18 | 2013-10-02 | 苏州市天灵中药饮片有限公司 | Preparation method for subcritical fennel essential oil water extraction |
| CN106190554A (en) * | 2016-07-22 | 2016-12-07 | 许备占 | The preparation method of Wild cottonrose hibiscus extract oil |
| CN108219959A (en) * | 2018-03-07 | 2018-06-29 | 安徽心缘康生物科技有限公司 | A kind of method that essential oil is extracted from peony petal |
| AU2020103254A4 (en) * | 2020-11-05 | 2021-01-14 | Nanjing Forestry University | A supercritical extraction method of wax from bamboo green skin |
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Application publication date: 20220506 |