CN108822967A - A kind of preparation process of agilawood essential oil - Google Patents
A kind of preparation process of agilawood essential oil Download PDFInfo
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- CN108822967A CN108822967A CN201811010761.XA CN201811010761A CN108822967A CN 108822967 A CN108822967 A CN 108822967A CN 201811010761 A CN201811010761 A CN 201811010761A CN 108822967 A CN108822967 A CN 108822967A
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- 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
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- 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
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- 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)
- Medicines Containing Plant Substances (AREA)
- Fats And Perfumes (AREA)
Abstract
The present invention provides a kind of preparation processes of agilawood essential oil, include the following steps：S1, Edgeworthia chrysantha part is taken out；S2, it Edgeworthia chrysantha is partially disposed in shady place dries 10-11 days；S3, will dry after Edgeworthia chrysantha part be ground into aloes powder；S4, aloes powder is fitted into supercritical extraction unit, obtains first oil after extraction and separation；S5, first oil is heated to the phenomenon that water-oil separating occur, be cooled to room temperature, water is poured out, obtain two oil；S6, two oil are heated to oily thawing, two oil of thawing is poured into wiped film molecular distillation device and are further separated, finally obtain agilawood essential oil and agalloch eaglewood ointment.The present invention is extracted from agalloch eaglewood Edgeworthia chrysantha wood using supercritical extraction unit and wiped film molecular distillation device joint technology and isolates agilawood essential oil, substantially increase the yield of agilawood essential oil, the original fragrance of agalloch eaglewood Edgeworthia chrysantha, solvent-free pollution are also utmostly kept simultaneously, the needs for meeting pure natural daily chemical essence exploitation, have broader market prospects.
Description
Technical field
The present invention relates to extraction of essential oil technical field more particularly to a kind of preparation processes of agilawood essential oil.
Background technique
Agalloch eaglewood is Thymelaeceae agalloch eaglewood category (AquilariaagalochaRoxb.) or Thymelaeceae agalloch eaglewood category suspension culture of Aquilaria sinensis
Resinous position in [Aquilariasinensis (Lour.) Gilg] trees.Northeast, print mainly produced in the South Asian Subcontinent
Spend Nicaea archipelago and Papua New Guinea archipelago, referred to as import agalloch eaglewood；China agalloch eaglewood is mainly produced in Guangdong, Hainan, cloud
The provinces and regions such as south, Fujian, referred to as Home-made occluder.In agalloch eaglewood mainly in flavor component be with sequiterpene and its containing oxygen derivative class,
Aromatic compound, fatty acid and its lipid and chromogen ketone etc..Agalloch eaglewood from agallochum by exterior injury or itself
Lesion etc. influences secreted resin, and the microorganism invasion by Menanotus flavoliven is parasitic, in thallus under the action of enzyme, hair
Given birth to a series of variations, and deposited for many years and the special substance rich in fragrance of one kind that is formed.
Agilawood essential oil is the important source materials such as manufacture highclass perfumes, cosmetics.The existing method for extracting agilawood essential oil is more, has
Steam distillation, supercritical extraction, solvent method, mixed enzyme fermentation extraction method etc..It is extracted, is consumed using steam distillation
Time length, effective component are easily destroyed；It is extracted using organic solvent such as ethyl alcohol, gasoline or petroleum ether, there are inflammable and explosive danger
And the problem of organic solvent residual.Therefore, the unfavorable factors such as quality is low, energy consumption is high and pollution is big, seriously limit agilawood essential oil
Development and application.Agalloch eaglewood essence is extracted as number of patent application discloses a kind of ferment using mixing enzyme preparation for 201310303186.3
The method of oil adds water seal to ferment agalloch eaglewood raw material using cellulase, acid protease and a- amylase as mixing enzyme preparation
Extract agilawood essential oil.But this kind of method extracts the recovery rate of agilawood essential oil only in 0.2%-0.236% (original text record 2 ‰-
2.36 ‰), while the fermenting procedure that this method is related to, and required time is up to 72 hours or more, and the defect of these two aspects is undoubtedly
It will limit the production efficiency that agilawood essential oil is extracted by agalloch eaglewood.
Therefore, it is really necessary to design a kind of preparation process of agilawood essential oil, the defect of the prior art is solved.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of preparation process of agilawood essential oil, it is easy to implement, is easy to
Industrialized production, and the yield of gained agilawood essential oil is high, quality is high.
The invention provides following technical scheme, and a kind of preparation process of agilawood essential oil includes the following steps：
S1, felling agalloch eaglewood tree trunk, take out the Edgeworthia chrysantha part of agalloch eaglewood tree trunk；
S2, it Edgeworthia chrysantha is partially disposed in shady place dries 10-11 days, until the water content of Edgeworthia chrysantha part is in 1%-2.5%；
S3, will dry after Edgeworthia chrysantha part be ground into aloes powder；
S4, aloes powder is fitted into supercritical extraction unit, and injects supercriticality to the supercritical extraction unit
Fluid extracts 90min under conditions of extracting pressure 22-28MPa, 45-65 DEG C of extraction temperature, in separating pressure 6.5-
7.5MPa separates 90min under conditions of 45-55 DEG C of separation temperature, obtains first oil after extraction and separation；
S5, first oil is heated to 60-80 DEG C, and continuous heating 30min, until there is the phenomenon that water-oil separating, be cooled to
Room temperature pours out water, obtains two oil；
S6, two oil are heated to 60-80 DEG C, until oil melts, two oil of thawing is poured into wiped film molecular distillation device
It is middle further to be separated, finally obtain agilawood essential oil and agalloch eaglewood ointment.
Further, in S1, the agalloch eaglewood trunk rejects the whitewood part of no agalloch eaglewood Edgeworthia chrysantha, leaves behind containing dark brown
The Edgeworthia chrysantha part of color grease.
Preferably, in S3, the partial size of the aloes powder is 2mm-3mm.
Preferably, in S4, the fluid of the supercriticality is CO 2 fluid, the stream of the CO 2 fluid
Amount is 300m3/h。
Further, in S6, first the wiped film molecular distillation device is opened, the wiped film molecular distillation is enabled to fill
It sets in vacuum state, vacuum pressure 0.1-1.0MPa.
Further, in S6, the wiped film molecular distillation device is isolated from two oil by three-level separating still
Agilawood essential oil and agalloch eaglewood ointment；Wherein the vapo(u)rizing temperature of level-one separating still is 75-80 DEG C, obtains level-one light component and level-one recombinates
Point；Level-one heavy constituent carries out the second-order separation, and the vapo(u)rizing temperature of the second-order separation kettle is 80-90 DEG C, obtains second level light component and second level
Heavy constituent；Second level heavy constituent carries out three-level separation, and the vapo(u)rizing temperature of three-level separating still is 100-148 DEG C, finally obtains agalloch eaglewood essence
Oil and agalloch eaglewood ointment.
The preparation process's of agilawood essential oil of the present invention has the beneficial effect that：Compared with prior art, the present invention utilizes overcritical
Extraction equipment and wiped film molecular distillation device joint technology are extracted from agalloch eaglewood Edgeworthia chrysantha wood isolates agilawood essential oil, utilizes this skill
Art substantially increases the yield of agilawood essential oil, while also utmostly keeping in quality the original fragrance of agalloch eaglewood Edgeworthia chrysantha, without molten
Agent pollution meets the needs of pure natural daily chemical essence exploitation, has broader market prospects.
Specific embodiment
In order to make goal of the invention of the invention, technical solution and technical effect are more clearly understood, below with reference to specific reality
Applying mode, the present invention is described further.It should be understood that specific embodiment described herein, for explaining only the invention,
It is not intended to limit the present invention.
A kind of preparation process of agilawood essential oil, includes the following steps：
S1, felling agalloch eaglewood tree trunk, take out the Edgeworthia chrysantha part of agalloch eaglewood tree trunk；
S2, it Edgeworthia chrysantha is partially disposed in shady place dries 10-11 days, until the water content of Edgeworthia chrysantha part is in 1%-2.5%；
S3, will dry after Edgeworthia chrysantha part be ground into aloes powder；
S4, aloes powder is fitted into supercritical extraction unit, and injects supercriticality to the supercritical extraction unit
Fluid extracts 90min under conditions of extracting pressure 22-28MPa, 45-65 DEG C of extraction temperature, in separating pressure 6.5-
7.5MPa separates 90min under conditions of 45-55 DEG C of separation temperature, obtains first oil after extraction and separation；Wherein, described super
The principle of critical extraction equipment is the relationship of the solvability and its density using supercritical fluid, i.e. pressure and temperature faces super
The influence of boundary's fluid solvent power and carry out, treat separate substance using the different solvability of fluid and selectively divided
From obtaining the blending constituent of optimal proportion by control condition (pressure and temperature)；
S5, first oil is heated to 60-80 DEG C, and continuous heating 30min, until there is the phenomenon that water-oil separating, be cooled to
Room temperature pours out water, obtains two oil；
S6, two oil are heated to 60-80 DEG C, until oil melts, two oil of thawing is poured into wiped film molecular distillation device
It is middle further to be separated, finally obtain agilawood essential oil and agalloch eaglewood ointment.
Further, in S1, the agalloch eaglewood trunk rejects the whitewood part of no agalloch eaglewood Edgeworthia chrysantha, leaves behind containing dark brown
The Edgeworthia chrysantha part of color grease.
Preferably, in S3, the partial size of the aloes powder is 2mm-3mm.
Preferably, in S4, the fluid of the supercriticality is CO 2 fluid, the stream of the CO 2 fluid
Amount is 300m3/h。
Further, in S6, first the wiped film molecular distillation device is opened, the wiped film molecular distillation is enabled to fill
It sets in vacuum state, vacuum pressure 0.1-1.0MPa.
Further, in S6, the wiped film molecular distillation device is isolated from two oil by three-level separating still
Agilawood essential oil and agalloch eaglewood ointment；Wherein the vapo(u)rizing temperature of level-one separating still is 75-80 DEG C, obtains level-one light component and level-one recombinates
Point；Level-one heavy constituent carries out the second-order separation, and the vapo(u)rizing temperature of the second-order separation kettle is 80-90 DEG C, obtains second level light component and second level
Heavy constituent；Second level heavy constituent carries out three-level separation, and the vapo(u)rizing temperature of three-level separating still is 100-148 DEG C, finally obtains agalloch eaglewood essence
Oil and agalloch eaglewood ointment；Wherein, molecular distillation is that liquid material flows through heating surface with filminess and just completes distillation process, is separated
Degree is high, can separate routine and be not easy separated substance；Material heated time is short, generally between several seconds to tens seconds, reduces object
Expect the chance of thermal decomposition；In addition, light component and recombination are divided into the relative concept in same grade molecular distillation, lower boiling point is light
Component, higher boiling point is heavy constituent.
Below by way of specific embodiment, the invention will be further described.
Embodiment one：
The preparation process of agilawood essential oil of the present invention, includes the following steps：
S1, felling agalloch eaglewood tree trunk, take out the Edgeworthia chrysantha part of agalloch eaglewood tree trunk；
S2, it Edgeworthia chrysantha is partially disposed in shady place dries 10 days, until the water content of Edgeworthia chrysantha part is 2.5%；
S3, will dry after Edgeworthia chrysantha part be ground into partial size be 3mm aloes powder；
S4,10kg aloes powder is fitted into supercritical extraction unit, and injects carbon dioxide to the supercritical extraction unit
Fluid, the flow of the CO 2 fluid are 300m3/ h is extracted under conditions of extracting pressure 22MPa, 45 DEG C of extraction temperature
90min separates 90min under conditions of separating pressure 6.5MPa, 45 DEG C of separation temperature, obtains after extraction and separation just
Oil；
S5, first oil is heated to 60 DEG C, and continuous heating 30min, until there is the phenomenon that water-oil separating, be cooled to often
Temperature pours out water, obtains two oil；
S6, two oil are heated to 60 DEG C, until oil melts, the wiped film molecular distillation device is opened, is scraped described in order
Membrane type molecular distillation apparatus is in vacuum state, and two oil of thawing are poured into wiped film molecular distillation dress by vacuum pressure 1MPa
It sets and middle is further separated；Wherein the vapo(u)rizing temperature of level-one separating still is 75 DEG C, obtains level-one light component and level-one heavy constituent；
Level-one heavy constituent carries out the second-order separation, and the vapo(u)rizing temperature of the second-order separation kettle is 80 DEG C, obtains second level light component and second level heavy constituent；
Second level heavy constituent carries out three-level separation, and the vapo(u)rizing temperature of three-level separating still is 100 DEG C, finally obtains agilawood essential oil 108g and agalloch eaglewood
Ointment 72g.
Embodiment two：
The preparation process of agilawood essential oil of the present invention, includes the following steps：
S1, felling agalloch eaglewood tree trunk, take out the Edgeworthia chrysantha part of agalloch eaglewood tree trunk；
S2, it Edgeworthia chrysantha is partially disposed in shady place dries 10.5 days, until the water content of Edgeworthia chrysantha part is 1.8%；
S3, will dry after Edgeworthia chrysantha part be ground into partial size be 2.5mm aloes powder；
S4,10kg aloes powder is fitted into supercritical extraction unit, and injects carbon dioxide to the supercritical extraction unit
Fluid, the flow of the CO 2 fluid are 300m3/ h is extracted under conditions of extracting pressure 25MPa, 55 DEG C of extraction temperature
90min separates 90min under conditions of separating pressure 7MPa, 50 DEG C of separation temperature, obtains first oil after extraction and separation；
S5, first oil is heated to 70 DEG C, and continuous heating 30min, until there is the phenomenon that water-oil separating, be cooled to often
Temperature pours out water, obtains two oil；
S6, two oil are heated to 70 DEG C, until oil melts, the wiped film molecular distillation device is opened, is scraped described in order
Membrane type molecular distillation apparatus is in vacuum state, and two oil of thawing are poured into wiped film molecular distillation by vacuum pressure 0.5MPa
It is further separated in device；Wherein the vapo(u)rizing temperature of level-one separating still is 77 DEG C, obtains level-one light component and level-one recombinates
Point；Level-one heavy constituent carries out the second-order separation, and the vapo(u)rizing temperature of the second-order separation kettle is 85 DEG C, obtains second level light component and second level recombinates
Point；Second level heavy constituent carries out three-level separation, and the vapo(u)rizing temperature of three-level separating still is 124 DEG C, finally obtain agilawood essential oil 114g and
Agalloch eaglewood ointment 76g.
Embodiment three：
The preparation process of agilawood essential oil of the present invention, includes the following steps：
S1, felling agalloch eaglewood tree trunk, take out the Edgeworthia chrysantha part of agalloch eaglewood tree trunk；
S2, it Edgeworthia chrysantha is partially disposed in shady place dries 11 days, until the water content of Edgeworthia chrysantha part is 1%；
S3, will dry after Edgeworthia chrysantha part be ground into partial size be 2mm aloes powder；
S4,10kg aloes powder is fitted into supercritical extraction unit, and injects carbon dioxide to the supercritical extraction unit
Fluid, the flow of the CO 2 fluid are 300m3/ h is extracted under conditions of extracting pressure 28MPa, 65 DEG C of extraction temperature
90min separates 90min under conditions of separating pressure 7.5MPa, 55 DEG C of separation temperature, obtains after extraction and separation just
Oil；
S5, first oil is heated to 80 DEG C, and continuous heating 30min, until there is the phenomenon that water-oil separating, be cooled to often
Temperature pours out water, obtains two oil；
S6, two oil are heated to 80 DEG C, until oil melts, the wiped film molecular distillation device is opened, is scraped described in order
Membrane type molecular distillation apparatus is in vacuum state, and two oil of thawing are poured into wiped film molecular distillation by vacuum pressure 0.1MPa
It is further separated in device；Wherein the vapo(u)rizing temperature of level-one separating still is 80 DEG C, obtains level-one light component and level-one recombinates
Point；Level-one heavy constituent carries out the second-order separation, and the vapo(u)rizing temperature of the second-order separation kettle is 90 DEG C, obtains second level light component and second level recombinates
Point；Second level heavy constituent carries out three-level separation, and the vapo(u)rizing temperature of three-level separating still is 148 DEG C, finally obtain agilawood essential oil 120g and
Agalloch eaglewood ointment 80g.
Example IV：Agilawood essential oil recovery rate and extraction time comparative test
With the embodiment of the present invention two, the conventional steam way of distillation and application No. is 201310303186.3 patent Examples
3 methods are comparison object, are extracted using the agalloch eaglewood raw material of identical weight, are counted to recovery rate and extraction time, are tied
Fruit is shown in Table 1.
The comparing result of table 1 agilawood essential oil recovery rate and extraction time
| Extracting method | Feed intake (kg) | Agilawood essential oil (g) | Recovery rate (%) | Extraction time |
| Steam distillation | 10 | 7.2 | 0.072 | 33.6h |
| The embodiment of the present invention two | 10 | 114 | 1.14 | 5.5h |
| 201310303186.3 | 10 | 23.6 | 0.236 | 72h |
As shown in Table 1, the remote height of the recovery rate of agilawood essential oil of the present invention have patent notes as a result, and conventional method
Recovery rate, while substantially reducing extraction time, improve extraction efficiency.In addition, mentioning for other embodiments of the invention
Rate and extraction time is taken to be superior to existing extracting method.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, architectural form cans be flexible and changeable, can be with derivative series product.It only makes several
Simple deduction or replace all shall be regarded as belonging to present invention scope of patent protection determined by the appended claims.
Claims (6)
1. a kind of preparation process of agilawood essential oil, it is characterised in that：Include the following steps：
S1, felling agalloch eaglewood tree trunk, take out the Edgeworthia chrysantha part of agalloch eaglewood tree trunk；
S2, it Edgeworthia chrysantha is partially disposed in shady place dries 10-11 days, until the water content of Edgeworthia chrysantha part is in 1%-2.5%；
S3, will dry after Edgeworthia chrysantha part be ground into aloes powder；
S4, aloes powder is fitted into supercritical extraction unit, and injects the fluid of supercriticality to the supercritical extraction unit,
90min is extracted under conditions of extracting pressure 22-28MPa, 45-65 DEG C of extraction temperature, in separating pressure 6.5-7.5MPa, separation
90min is separated under conditions of 45-55 DEG C of temperature, obtains first oil after extraction and separation；
S5, first oil is heated to 60-80 DEG C, and continuous heating 30min, until there is the phenomenon that water-oil separating, is cooled to room temperature,
Water is poured out, two oil are obtained；
S6, two oil are heated to 60-80 DEG C, until oil melt, by two oil of thawing pour into wiped film molecular distillation device into
Row further separation, finally obtains agilawood essential oil and agalloch eaglewood ointment.
2. the preparation process of agilawood essential oil as described in claim 1, it is characterised in that：In S1, the agalloch eaglewood trunk is rejected
There is no the whitewood part of agalloch eaglewood Edgeworthia chrysantha, leaves behind the Edgeworthia chrysantha part containing brownish black grease.
3. the preparation process of agilawood essential oil as described in claim 1, it is characterised in that：In S3, the partial size of the aloes powder
For 2mm-3mm.
4. the preparation process of agilawood essential oil as described in claim 1, it is characterised in that：In S4, the supercriticality
Fluid is CO 2 fluid, and the flow of the CO 2 fluid is 300m3/h.
5. the preparation process of agilawood essential oil as described in claim 1, it is characterised in that：In S6, first by the scraped film type point
Sub- distilling apparatus is opened, and the wiped film molecular distillation device is enabled to be in vacuum state, vacuum pressure 0.1-1.0MPa.
6. the preparation process of agilawood essential oil as claimed in claim 5, it is characterised in that：In S6, the scraped film type molecule steams
Distillation unit passes through three-level separating still isolated agilawood essential oil and agalloch eaglewood ointment from two oil；The wherein distillation temperature of level-one separating still
Degree is 75-80 DEG C, obtains level-one light component and level-one heavy constituent；Level-one heavy constituent carries out the second-order separation, the steaming of the second-order separation kettle
Evaporating temperature is 80-90 DEG C, obtains second level light component and second level heavy constituent；Second level heavy constituent carries out three-level separation, three-level separating still
Vapo(u)rizing temperature be 100-148 DEG C, finally obtain agilawood essential oil and agalloch eaglewood ointment.
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Cited By (8)
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|---|---|---|---|---|
| CN112159722A (en) * | 2020-09-01 | 2021-01-01 | 梁勇 | Preparation method of agilawood essential oil |
| CN112726267A (en) * | 2020-12-29 | 2021-04-30 | 海南娜古芳沉香科技有限公司 | Chinese art paper raw pulp with Qinan agilawood fragrance, Chinese art paper and preparation method of Chinese art paper raw pulp |
| CN112795430A (en) * | 2020-12-25 | 2021-05-14 | 海南黎药堂生物科技开发有限公司 | Extraction method for extracting Kyara agilawood essential oil |
| CN112842957A (en) * | 2020-12-25 | 2021-05-28 | 海南黎药堂生物科技开发有限公司 | Kyara perfume and preparation method thereof |
| CN114231359A (en) * | 2021-12-23 | 2022-03-25 | 海南林鹏茶业有限公司 | Preparation method of agilawood extract |
| CN114317121A (en) * | 2022-01-24 | 2022-04-12 | 深圳市前海天香赋科技有限公司 | Supercritical carbon dioxide extraction and separation system for linaloe oil |
| CN116515559A (en) * | 2023-05-06 | 2023-08-01 | 东莞尚正生物科技有限公司 | Method for extracting heavy essential oil based on subcritical low-temperature extraction process |
| CN116763693A (en) * | 2023-06-12 | 2023-09-19 | 广东兆禧健康产业投资有限公司 | Perfume based on aquilaria sinensis extract and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112159722A (en) * | 2020-09-01 | 2021-01-01 | 梁勇 | Preparation method of agilawood essential oil |
| CN112795430A (en) * | 2020-12-25 | 2021-05-14 | 海南黎药堂生物科技开发有限公司 | Extraction method for extracting Kyara agilawood essential oil |
| CN112842957A (en) * | 2020-12-25 | 2021-05-28 | 海南黎药堂生物科技开发有限公司 | Kyara perfume and preparation method thereof |
| CN112842957B (en) * | 2020-12-25 | 2022-12-02 | 海南黎药堂生物科技开发有限公司 | Kyara perfume and preparation method thereof |
| CN112726267A (en) * | 2020-12-29 | 2021-04-30 | 海南娜古芳沉香科技有限公司 | Chinese art paper raw pulp with Qinan agilawood fragrance, Chinese art paper and preparation method of Chinese art paper raw pulp |
| CN112726267B (en) * | 2020-12-29 | 2023-03-03 | 海南娜古芳沉香科技有限公司 | Chinese art paper raw pulp with Qinan agilawood fragrance, chinese art paper and preparation method of Chinese art paper raw pulp |
| CN114231359A (en) * | 2021-12-23 | 2022-03-25 | 海南林鹏茶业有限公司 | Preparation method of agilawood extract |
| CN114317121A (en) * | 2022-01-24 | 2022-04-12 | 深圳市前海天香赋科技有限公司 | Supercritical carbon dioxide extraction and separation system for linaloe oil |
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