CN105903227A - Lavender absolute oil and preparation method thereof - Google Patents
Lavender absolute oil and preparation method thereof Download PDFInfo
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- CN105903227A CN105903227A CN201610456414.4A CN201610456414A CN105903227A CN 105903227 A CN105903227 A CN 105903227A CN 201610456414 A CN201610456414 A CN 201610456414A CN 105903227 A CN105903227 A CN 105903227A
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- ethanol water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
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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
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/10—Production of fats or fatty oils from raw materials by extracting
-
- 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
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- 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
- C11B3/00—Refining fats or fatty oils
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
-
- 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
- C11B9/0003—Compounds of unspecified constitution defined by the chemical reaction for their preparation
-
- 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
- C11B9/022—Refining
-
- 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
Abstract
The invention relates to the technical field of lavender absolute oil, in particular to lavender absolute oil and a preparation method thereof. The method comprises the steps that firstly, a lavender extract is selected, and the lavender extract and an ethanol solution with the mass percentage being 93-98% are vibrated and mixed on the basis of the mass ratio being 0.9:1.8-1.1:2.2 to obtain a mixed solution; secondly, the mixed solution is subjected to standing under the temperature of 5-10 DEG C for 2-5 h to obtain a freezing mixture. The lavender absolute oil is extracted by adopting an extract extracted by a subcritical device through a later separation and extraction technology, the lavender oil contains volatile and non-volatile aromatic hydrocarbon compounds, the content of linalool and linalyl acetate in the extracted absolute oil are increased remarkably, the content of camphor is lowered, the top note, the basic note and the end note are better than those of absolute oil obtained through atmospheric distillation, the fragrance is fuller, long and stable, small molecule compound losses are small, and the lavender absolute oil is the best raw material for blending top-grade perfume and highest-grade essential oil.
Description
Technical field
The present invention relates to lavender absolute oil technical field, be a kind of lavender absolute oil and preparation method thereof.
Background technology
Little grass of South China Science & Engineering University Liu et al. has carried out the research of enzymolysis-Subcritical water chromotagraphy sand ginger active ingredient, result
Showing: enzymolysis-Subcritical water chromotagraphy process, optimal temperature is 120 DEG C；Optimum extraction pressure is 8MPa；Enzyme concentration is 0.3%；
Inventory 100%；Extraction time is 20min；In husky ginger essential oil, effective component yield improves about 10% than SWE method；South China science and engineering is big
Learning Guo Juan et al. and carry out the Subcritical water chromotagraphy research of onion essential oil, the optimum process condition said is: static extraction, during extraction
Between 30min, pressure 2 MPa, the continuous program of 100-150 DEG C heats up, and petroleum ether is extractant, extracts 2 times；Ocean under the conditions of this
The yield of green onion essential oil is 0.362%, and sulfur-containing compound content is 97.36g/kg.Say that the 2L Subcritical water chromotagraphy device of design is automatic
Change degree is high, easy and simple to handle；South China Science & Engineering University Guo Juan et al. has carried out the research of essential oil in Subcritical water chromotagraphy dried pepper, really
Fixed optimised process is；Raw material particle size 0.5mm, the continuous program of extraction time 40min, 100-150 DEG C heat up, pressure
5MPa；The extraction yield of Japan pepper essential oil is 5.42% with this understanding.Meanwhile, Japan pepper essential oil carried out allowing oxidation test；Foochow
University Guo bravely et al. can carry out super subcritical state CO2The research of extracting pyrethrin medicinal extract, the Optimizing Technical obtained is:
Extracting pressure 20MPa, extraction temperature is 25 DEG C, CO2Gas speed 100HL/h；Test shows that entrainer can strengthen effect of extracting；Public
The number of opening be 101096614 Chinese patent literature disclose Yunnan Lei Sen scientific & technical corporation woods hold outstanding person et al. invention Rosa Damascana true
Empty water dissipates flushing steaming subcritical abstraction technology and it is characterized by: advanced head perfume (or spice) absorption, the rear method using vacuum boiling, makes oil-containing rose
Rare oil droplet expands: dissipates punching with water again and steams the method extraction Rosa Damascana superposed with rectifying, is resolving the head perfume (or spice) adsorbed.Warp
The document above content enumerated shows: domestic relevant husky ginger essential oil, onion essential oil, dried pepper essential oil, Rosa Damascana, pyrethrins
The research of medicinal extract subcritical abstraction technique has been shown in that document is reported, but the research about lavender absolute oil subcritical abstraction technique has no
Document is reported.
The absolute oil linalool that existing technique air-distillation obtains is relatively low with bergamio content, and the content of its camphor is relatively
High.
Summary of the invention
The invention provides a kind of lavender absolute oil and preparation method thereof, overcome the deficiency of above-mentioned prior art, its energy
The absolute oil linalool that effectively the existing technique air-distillation of solution obtains is relatively low with bergamio content, and the content of its camphor is relatively
High problem.
One of technical scheme is realized by following measures: a kind of lavender absolute oil, as follows
Obtain: the first step, choose lavender medicinal extract, by lavender medicinal extract and ethanol water that weight/mass percentage composition is 93% to 98% by
Mass ratio is to obtain mixed liquor after 0.9:1.8 to 1.1:2.2 concussion mixes；Second step, by mixed liquor-5 DEG C to-10 DEG C standings
Freezing mixture is obtained after 2 hours to 5 hours；3rd step, by freezing mixture after 300 mesh to 400 mesh filter-cloth filterings, then uses
Buchner funnel obtains filtrate after carrying out suction filtration；4th step, obtains lavender absolute oil of the present invention after the recovered ethanol water of filtrate.
Further optimization and/or improvements to foregoing invention technical scheme one of are presented herein below:
Above-mentioned lavender medicinal extract obtains as follows: the first step, chooses lavender fresh flower；Second step, puts lavender fresh flower
Enter in subcritical abstraction still, be 2Mpa to 4Mpa in extracting pressure, by extractant under conditions of extraction temperature 30 DEG C to 40 DEG C
By force (forcing) pump flow, to be 8 gram/minute to 12 gram/minute import R134a carries out continuous extraction 1 hour in subcritical abstraction stills extremely
Within 2 hours, obtain lavender fluid；3rd step, flows into lavender fluid in subcritical separating still from subcritical abstraction still and is down to
Separate under normal temperature and pressure, obtain lavender medicinal extract.
The method of above-mentioned recovery ethanol water is for using Rotary Evaporators at 40 degrees Celsius to 45 degrees Celsius, and rotating speed is 12
Rev/min to 14 revs/min, vacuum is to reclaim ethanol water 1 hour to 5 hours under the conditions of 0.07Mpa to 0.08Mpa.
Above-mentioned lavender medicinal extract and ethanol water that weight/mass percentage composition is 95% concussion incorporation time be 20 minutes to 40
Minute.
Filter paper used in above-mentioned Buchner funnel is qualitative filter paper.
The two of technical scheme are realized by following measures: the preparation method of a kind of lavender absolute oil,
Carry out in the steps below: the first step, choose lavender medicinal extract, be the second of 93% to 98% by lavender medicinal extract and weight/mass percentage composition
Alcohol solution is in mass ratio for obtaining mixed liquor after 0.9:1.8 to 1.1:2.2 concussion mixing；Second step, by mixed liquor at-5 DEG C
Freezing mixture is obtained after standing 2 hours to 5 hours to-10 DEG C；3rd step, by freezing mixture through 300 mesh to 400 mesh filter clothes
After filtration, then obtain filtrate after carrying out suction filtration with Buchner funnel；4th step, obtains the present invention after the recovered ethanol water of filtrate
Lavender absolute oil.
Be presented herein below to foregoing invention technical scheme two further optimization and/or improvements:
Above-mentioned lavender medicinal extract obtains as follows: the first step, chooses lavender fresh flower；Second step, puts lavender fresh flower
Enter in subcritical abstraction still, be 2Mpa to 4Mpa in extracting pressure, by extractant under conditions of extraction temperature 30 DEG C to 40 DEG C
By force (forcing) pump flow, to be 8 gram/minute to 12 gram/minute import R134a carries out continuous extraction 1 hour in subcritical abstraction stills extremely
Within 2 hours, obtain lavender fluid；3rd step, flows into lavender fluid in subcritical separating still from subcritical abstraction still and is down to
Separate under normal temperature, obtain lavender medicinal extract.
The method of above-mentioned recovery ethanol water is for using Rotary Evaporators at 40 degrees Celsius to 45 degrees Celsius, and rotating speed is 12
Rev/min to 14 revs/min, vacuum is to reclaim ethanol water 1 hour to 5 hours under the conditions of 0.07Mpa to 0.08Mpa.
Above-mentioned lavender medicinal extract and ethanol water that weight/mass percentage composition is 95% concussion incorporation time be 20 minutes to 40
Minute.
Filter paper used in above-mentioned Buchner funnel is qualitative filter paper.
The medicinal extract that the present invention uses subcritical equipment to extract extracts lavender absolute oil by the separation-extraction technology in later stage, no
Contain only volatility, and containing the certain compounds of nonvolatile fragrance, linalool and acetic acid virtue camphor tree in extraction gained absolute oil
Ester content substantially increases, and camphor content reduces, and head perfume, basic note, bottom note are superior to the absolute oil of air-distillation, and its fragrance is fuller
Completely, fragrance is long and stablizes, and micromolecular compound loss is few, is the high-grade perfume of allotment and the optimum feed stock of superfine product essential oil.
Detailed description of the invention
The present invention is not limited by following embodiment, can determine specifically according to technical scheme and actual conditions
Embodiment.
Embodiment 1, the preparation method of this lavender absolute oil, obtain in the steps below: the first step, choose lavender medicinal extract,
Lavender medicinal extract and the ethanol water that weight/mass percentage composition is 93% to 98% are shaken for 0.9:1.8 to 1.1:2.2 in mass ratio
Mixed liquor is obtained after swinging mixing；Second step, obtains freezing mixing after mixed liquor is stood 2 hours to 5 hours at-5 DEG C to-10 DEG C
Liquid；3rd step, by freezing mixture after 300 mesh to 400 mesh filter-cloth filterings, then is filtered after carrying out suction filtration with Buchner funnel
Liquid；4th step, obtains lavender absolute oil of the present invention after the recovered ethanol water of filtrate.
Embodiment 2, the preparation method of this lavender absolute oil, obtain in the steps below: the first step, choose lavender medicinal extract,
Lavender medicinal extract and the ethanol water that weight/mass percentage composition is 93% to 98% are shaken for 0.9:1.8 to 1.1:2.2 in mass ratio
Mixed liquor is obtained after swinging mixing；Second step, obtains freezing mixing after mixed liquor is stood 2 hours or 5 hours at-5 DEG C or-10 DEG C
Liquid；3rd step, by freezing mixture after 300 mesh or 400 mesh filter-cloth filterings, then is filtered after carrying out suction filtration with Buchner funnel
Liquid；4th step, obtains lavender absolute oil of the present invention after the recovered ethanol water of filtrate.
Embodiment 3, as above-described embodiment optimization, this lavender medicinal extract obtains as follows: the first step, chooses and smokes clothing
Grass fresh flower；Second step, puts into lavender fresh flower in subcritical abstraction still, is 2Mpa to 4Mpa in extracting pressure, extraction temperature
It is 8 gram/minute by extractant R134a by force (forcing) pump flow under conditions of 30 DEG C to 40 DEG C and imports subcritical to 12 gram/minute
Extraction kettle carries out continuous extraction and within 1 hour, obtained lavender fluid to 2 hours；3rd step, by lavender fluid from subcritical extraction
Take still flows into and subcritical separating still is down under normal temperature separate, obtain lavender medicinal extract.
Embodiment 4, as above-described embodiment optimization, reclaims the method for ethanol water for Celsius 40 with Rotary Evaporators
Degree is to 45 degrees Celsius, and rotating speed is 12 revs/min to 14 revs/min, and vacuum is recovery ethanol water under the conditions of 0.07Mpa to 0.08Mpa
Solution 1 hour to 5 hours.
Embodiment 5, is the ethanol water of 95% as above-described embodiment optimization, lavender medicinal extract and weight/mass percentage composition
Concussion incorporation time is 20 minutes to 40 minutes.
Embodiment 6, as above-described embodiment optimization, filter paper used in Buchner funnel is qualitative filter paper.
Embodiment 7, this lavender absolute oil is obtained by following preparation method: the first step, and lavender fresh flower is sent into extraction kettle
In, with force (forcing) pump, extractant R134a is imported in knockout drum, be 2Mpa in extracting pressure, enter under conditions of extraction temperature 30 DEG C
Row continuous extraction obtains lavender fluid for 1 hour, and wherein the flow of extractant R134a is 8 gram/minute, flows out from extraction kettle
Extractant R134a fluid in separating still, directly discharge pressure under normal temperature and pressure, make extractant R134a and lavender fluid
Isolated lavender medicinal extract, by lavender medicinal extract and the ethanol water that weight/mass percentage composition is 93% to 98% be in mass ratio
Mixed liquor is obtained after 0.9:1.8 to 1.1:2.2 concussion mixing；Second step, freezing after mixed liquor is stood at a temperature of-5 DEG C 3h
Obtain freezing mixture；3rd step, adds qualitative filter paper Buchner funnel suction filtration by freezing mixture with 300 mesh filter clothes and is filtered
Liquid；4th step, by the filtrate recycling ethanol aqueous solution, with Rotary Evaporators at 40 degrees Celsius, rotating speed is 12 revs/min to 14 revs/min,
Vacuum is to reclaim ethanol water under the conditions of 0.07Mpa to obtain lavender absolute oil in 2 hours.
Embodiment 8, this lavender absolute oil is obtained by following preparation method: the first step, and lavender fresh flower is sent into extraction kettle
In, with force (forcing) pump, extractant R134a is imported in knockout drum, be 3Mpa in extracting pressure, enter under conditions of extraction temperature 35 DEG C
Row continuous extraction obtains lavender fluid for 1.5 hours, and wherein the flow of extractant R134a is 10 gram/minute, flows from extraction kettle
The extractant R134a fluid gone out directly discharges pressure under normal temperature and pressure in separating still, makes extractant R134a flow with lavender
Body isolated lavender medicinal extract, by lavender medicinal extract and ethanol water that weight/mass percentage composition is 93% to 98% in mass ratio
For obtaining mixed liquor after 0.9:1.8 to 1.1:2.2 concussion mixing；Second step, cold after mixed liquor is stood at a temperature of-7 DEG C 4h
Freeze and obtain freezing mixture；3rd step, adds qualitative filter paper Buchner funnel suction filtration by freezing mixture with 300 mesh filter clothes and is filtered
Liquid；4th step, by the filtrate recycling ethanol aqueous solution, with Rotary Evaporators at 42 degrees Celsius, rotating speed is 12 revs/min to 14 revs/min,
Vacuum is to reclaim ethanol water under the conditions of 0.075Mpa to obtain lavender absolute oil in 2.5 hours.
Embodiment 9, this lavender absolute oil is obtained by following preparation method: the first step, and lavender fresh flower is sent into extraction kettle
In, with force (forcing) pump, extractant R134a is imported in knockout drum, be 4Mpa in extracting pressure, enter under conditions of extraction temperature 40 DEG C
Row continuous extraction obtains lavender fluid for 2 hours, and wherein the flow of extractant R134a is 12 gram/minute, flows out from extraction kettle
Extractant R134a fluid in separating still, directly discharge pressure under normal temperature and pressure, make extractant R134a and lavender fluid
Isolated lavender medicinal extract, by lavender medicinal extract and the ethanol water that weight/mass percentage composition is 93% to 98% be in mass ratio
Mixed liquor is obtained after 0.9:1.8 to 1.1:2.2 concussion mixing；Second step, freezing after mixed liquor is stood at a temperature of-10 DEG C 3h
Obtain freezing mixture；3rd step, adds qualitative filter paper Buchner funnel suction filtration by freezing mixture with 400 mesh filter clothes and is filtered
Liquid；4th step, by the filtrate recycling ethanol aqueous solution, with Rotary Evaporators at 45 degrees Celsius, rotating speed is 12 revs/min to 14 revs/min,
Vacuum is to reclaim ethanol water under the conditions of 0.075Mpa to obtain lavender absolute oil in 2 hours.
The representative component content of the lavender absolute oil of the present invention that embodiment 7 obtains is shown in Table 1；Embodiment 8 obtains
The representative component content of lavender absolute oil of the present invention is shown in Table 2；The representative of the lavender absolute oil of the present invention that embodiment 9 obtains
Property constituent content is shown in Table 3；From table 1, table 2 and table 3 it can be seen that the lavender absolute oil that the present invention obtains does not contains only volatilization
Property, and containing the certain compounds of nonvolatile fragrance, wherein working substance linalool and bergamio content with existing often
Pressure distillation extraction process compares to have and improves largely, and the restricted index camphor content of most critical has and declines largely, extraction
Taking gained absolute oil, head perfume, basic note, bottom note are superior to the absolute oil of air-distillation, and its fragrance is fuller, fragrance is long and stablizes,
Micromolecular compound loss is few, be the high-grade perfume of allotment and the optimum feed stock of superfine product essential oil, and in production process, Appropriate application smokes
Clothing grass resource, improves the utilization rate of lavender, and extractant is to recycle, environmental protection, low consumption, pollution-free.
In sum, the lavender absolute oil that the present invention obtains, do not contain only volatility, and containing nonvolatile fragrant one
Determining compounds, wherein working substance linalool has with bergamio content and improves largely, the restricted index of most critical
Camphor content has and declines largely, extracts gained absolute oil, and head perfume, basic note, bottom note are superior to the essential oil of air-distillation, its fragrance
Fuller, fragrance is long and stablizes, micromolecular compound loss is few, is the most former of the high-grade perfume of allotment and superfine product essential oil
Material, in production process, Appropriate application lavender resource, improves the utilization rate of lavender, and extractant is to recycle, environmental protection,
Low consumption, pollution-free.
Above technical characteristic constitutes embodiments of the invention, and it has stronger adaptability and implementation result, can basis
It is actually needed the non-essential technical characteristic of increase and decrease, meets the demand of different situations.
Claims (10)
1. a lavender absolute oil, it is characterised in that obtain as follows: the first step, chooses lavender medicinal extract, by lavender
After medicinal extract and the ethanol water that weight/mass percentage composition is 93% to 98% mix for 0.9:1.8 to 1.1:2.2 concussion in mass ratio
Obtain mixed liquor；Second step, obtains freezing mixture after mixed liquor is stood 2 hours to 5 hours at-5 DEG C to-10 DEG C；3rd
Step, by freezing mixture after 300 mesh to 400 mesh filter-cloth filterings, then obtains filtrate after carrying out suction filtration with Buchner funnel；4th
Step, obtains lavender absolute oil of the present invention after the recovered ethanol water of filtrate.
Lavender absolute oil the most according to claim 1, it is characterised in that lavender medicinal extract obtains as follows: first
Step, chooses lavender fresh flower；Second step, puts into lavender fresh flower in subcritical abstraction still, extracting pressure be 2Mpa extremely
4Mpa, is that 8 gram/minute are to 12 Grams Per Minutes by extractant R134a by force (forcing) pump flow under conditions of extraction temperature 30 DEG C to 40 DEG C
Clock importing subcritical abstraction still carries out continuous extraction and within 1 hour, obtains lavender fluid to 2 hours；3rd step, flows lavender
Body flows in subcritical separating still from subcritical abstraction still is down under normal temperature separate, and obtains lavender medicinal extract.
Lavender absolute oil the most according to claim 1 and 2, it is characterised in that reclaim the method for ethanol water for rotating
Evaporimeter is at 40 degrees Celsius to 45 degrees Celsius, and rotating speed is 12 revs/min to 14 revs/min, and vacuum is 0.07Mpa to 0.08Mpa bar
Ethanol water is reclaimed 1 hour to 5 hours under part.
4. according to the lavender absolute oil described in claim 1 or 2 or 3, it is characterised in that lavender medicinal extract and weight/mass percentage composition
Be 95% ethanol water concussion incorporation time be 20 minutes to 40 minutes.
5. according to the lavender absolute oil described in claim 1 or 2 or 3 or 4, it is characterised in that filter paper used in Buchner funnel is
Qualitative filter paper.
6. the preparation method of a lavender absolute oil according to claim 1, it is characterised in that carry out in the steps below: the
One step, chooses lavender medicinal extract, by lavender medicinal extract and ethanol water that weight/mass percentage composition is 93% to 98% in mass ratio
For obtaining mixed liquor after 0.9:1.8 to 1.1:2.2 concussion mixing；Second step, stands 2 hours by mixed liquor at-5 DEG C to-10 DEG C
Freezing mixture is obtained after 5 hours；3rd step, by freezing mixture after 300 mesh to 400 mesh filter-cloth filterings, then uses Bu Shi
Funnel obtains filtrate after carrying out suction filtration；4th step, obtains lavender absolute oil of the present invention after the recovered ethanol water of filtrate.
The preparation method of lavender absolute oil the most according to claim 6, it is characterised in that lavender medicinal extract is as follows
Obtain: the first step, choose lavender fresh flower；Second step, puts into lavender fresh flower in subcritical abstraction still, in extracting pressure is
2Mpa to 4Mpa, under conditions of extraction temperature 30 DEG C to 40 DEG C by extractant R134a by force (forcing) pump flow be 8 gram/minute extremely
12 gram/minute importing subcritical abstraction stills carry out continuous extraction and within 1 hour, obtains lavender fluid to 2 hours；3rd step, will smoke
Clothing grass fluid flows in subcritical separating still from subcritical abstraction still is down under normal temperature separate, and obtains lavender medicinal extract.
8. according to the preparation method of the lavender absolute oil described in claim 6 or 7, it is characterised in that reclaim the side of ethanol water
Method for Rotary Evaporators at 40 degrees Celsius to 45 degrees Celsius, rotating speed is 12 revs/min to 14 revs/min, vacuum be 0.07Mpa extremely
Ethanol water is reclaimed 1 hour to 5 hours under the conditions of 0.08Mpa.
9. according to the preparation method of the lavender absolute oil described in claim 6 or 7 or 8, it is characterised in that lavender medicinal extract and matter
Measuring the ethanol water concussion incorporation time that percentage composition is 95% is 20 minutes to 40 minutes.
10. according to the preparation method of the lavender absolute oil described in claim 6 or 7 or 8 or 9, it is characterised in that in Buchner funnel
Filter paper used is qualitative filter paper.
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| CN108018117A (en) * | 2017-12-25 | 2018-05-11 | 湖南宇山玉月农业科技有限公司 | A kind of extracting method of styrax essential oil |
| CN108865440A (en) * | 2018-05-23 | 2018-11-23 | 菏泽瑞璞牡丹产业科技发展有限公司 | A kind of method of subcritical abstraction fresh peony flower medicinal extract |
| CN110665253A (en) * | 2019-11-04 | 2020-01-10 | 三益创价生物科技(深圳)有限公司 | High-efficiency multifunctional SCF device and consistent operation type multifunctional SCF device |
| WO2020152704A1 (en) | 2019-01-22 | 2020-07-30 | Bmv Fragrances [P] Ltd. | Process for producing synthetic absolutes and products thereof |
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