CN114606059B - Extraction method of rose essential oil - Google Patents
Extraction method of rose essential oil Download PDFInfo
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- CN114606059B CN114606059B CN202210317036.7A CN202210317036A CN114606059B CN 114606059 B CN114606059 B CN 114606059B CN 202210317036 A CN202210317036 A CN 202210317036A CN 114606059 B CN114606059 B CN 114606059B
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- essential oil
- ethyl alcohol
- absolute ethyl
- rose
- distillation
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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
-
- 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
-
- 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
- C11B9/027—Recovery of volatiles by distillation or stripping
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- 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 method of rose essential oil, which comprises the steps of firstly leaching rose petals by absolute ethyl alcohol, combining ultrasonic treatment to break cell walls in the rose petals, easily separating out essential oil components and dissolving in the absolute ethyl alcohol to obtain absolute ethyl alcohol leaching liquor, then placing the rose petals leached by the absolute ethyl alcohol in a distillation device for fumigation to obtain fumigation mixed liquor, mixing the absolute ethyl alcohol leaching liquor and the fumigation mixed liquor, and adding distilled water for separation and purification. The invention adopts a mixed extraction mode of leaching and fumigation, fully extracts essential oil components in the rose, and improves the extraction efficiency.
Description
Technical Field
The invention relates to the technical field of extraction of essential oil, in particular to an extraction method of rose essential oil.
Background
The rose essential oil is extracted from rose, is a crown of fresh flower essential oil, is high in price, is equivalent to gold in international market price, has the American name of 'the essential oil queen' and 'the liquid gold', and is the most commonly used famous and precious flower fragrance raw material. In the prior art, the rose essential oil is generally extracted by adopting a steam distillation method, however, the method has certain defects in the distillation extraction, such as stacking of rose petals which are easy to occur to influence the extraction effect of the essential oil, placing the rose petals on a tray, and then placing the tray layer by layer in a distillation pot, wherein the temperature is reduced when steam rises to the upper part of the distillation pot, so that the rose petals on the upper part cannot be fully distilled to extract the essential oil, and the time consumption is long to influence the extraction efficiency.
Disclosure of Invention
The invention provides an extraction method of rose essential oil for solving the problems.
The invention adopts the following technical scheme:
an extraction method of rose essential oil mainly comprises the following steps,
step 1: fresh rose petals with bright colors are selected, cleaned, and put into a dryer to dry the surface moisture;
step 2: soaking the dried rose petals in absolute ethyl alcohol, stirring and performing water bath ultrasonic vibration to obtain absolute ethyl alcohol leaching liquor;
step 3: taking out the rose petals from the absolute ethyl alcohol, draining the absolute ethyl alcohol on the surfaces of the rose petals, and then placing the rose petals into a distillation device for steam fumigation to obtain fumigation mixed liquid;
step 4: and (3) mixing the absolute ethanol leaching solution obtained in the step (2) with the fumigation mixed solution obtained in the step (3) and stirring uniformly to obtain an ethanol essential oil mixed solution, placing the ethanol essential oil mixed solution in an oil-water separator, adding distilled water into the ethanol essential oil mixed solution, stirring, standing until the ethanol essential oil mixed solution is layered, and separating an ethanol aqueous solution at the lower part of the oil-water separator to obtain the essential oil at the upper part.
As a preferable technical scheme of the invention, the soaking time of the rose petals in the absolute ethyl alcohol in the step 2 is 30-90min, and the ultrasonic vibration time is 10-30min.
As a preferable technical scheme of the invention, the distillation device in the step 3 comprises a distillation pot, a condenser and a collection tank which are sequentially connected through pipelines, wherein a horizontal distillation cylinder is arranged in the distillation pot, the distillation cylinder is rotationally connected to the inner side wall of the distillation pot through a rotating shaft, one end of the rotating shaft penetrates through the side wall of the distillation pot and is connected with a motor, and a plurality of supporting trays are arranged on the surface of the distillation cylinder.
As a preferable technical scheme of the invention, the bearing plate comprises a bottom support and a cover body, wherein the bottom support is fixed on the surface of the distillation cylinder through a support column, a first baffle and a second baffle are respectively arranged on two opposite sides of the bottom support, a fixing edge extending outwards is arranged at the upper end of the second baffle, and a connecting edge matched with the fixing edge is arranged on the cover body.
As a preferable technical scheme of the invention, the first baffle, the second baffle, the bottom support and the cover body are all of screen type structures.
As a preferable technical scheme of the invention, the bottom support is provided with a plurality of regularly distributed positioning holes, and the bottom of the cover body is provided with positioning columns matched with the positioning holes.
As a preferable technical scheme of the invention, the bearing plate is of an arc-shaped structure matched with the surface of the distillation cylinder.
The beneficial effects of the invention are as follows:
1. the invention firstly adopts absolute ethyl alcohol to leach the rose petals, combines ultrasonic treatment to break cell walls in the rose petals, is easy to separate out essential oil components and dissolve in the absolute ethyl alcohol to obtain absolute ethyl alcohol leaching liquor, then places the absolute ethyl alcohol leached rose petals in a distillation device for fumigation to obtain fumigation mixed liquor, mixes the absolute ethyl alcohol leaching liquor and the fumigation mixed liquor, adds distilled water for separation and purification, adopts a leaching-fumigation mixed extraction mode, fully extracts the essential oil components in the rose flowers, and improves the extraction efficiency.
2. The distilling device adopts the rotatable distilling tube, namely, the rose petals are fixed on the supporting tray on the surface of the distilling tube, so that the rose petals can rotate along with the distilling tube and can fully contact with high-temperature steam at the lower part of the distilling pot, the extracting efficiency is effectively improved, and the fumigating time is shortened.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A;
FIG. 3 is a schematic side view of a distillation column;
fig. 4 shows a schematic view of the structure of the support plate.
The symbols in the drawings illustrate:
1: distillation pot, 2: condenser, 3: collection tank, 4: pipeline one, 5: pipeline II, 6: distillation cylinder, 7: rotating shaft, 8: a motor 9: bearing, 10: a shoe, 11: cover body, 12: support column, 13: first baffle, 14: second baffle, 15: fixed edge, 16: connecting edges, 17: positioning holes, 18: and positioning columns.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings.
Example 1
An extraction method of rose essential oil mainly comprises the following steps,
step 1: fresh rose petals with bright color, preferably rose petals without insect eyes and injury, are selected, cleaned and put into a dryer to dry the surface moisture;
step 2: soaking the dried rose petals in absolute ethyl alcohol, stirring, performing water bath ultrasonic vibration, and performing ultrasonic treatment to break cell walls inside the rose petals, so that the main components of the essential oil are easily separated out and dissolved in the absolute ethyl alcohol, thereby obtaining absolute ethyl alcohol leaching solution;
step 3: taking out the rose petals from the absolute ethyl alcohol, draining the absolute ethyl alcohol on the surfaces of the rose petals, and then placing the rose petals into a distillation device for steam fumigation to obtain fumigation mixed liquid; specifically, as shown in fig. 1, rose petals are placed in a distillation pot, high-temperature steam is introduced from the bottom of the distillation pot to the interior of the distillation pot, the rose petals are fumigated by the high-temperature steam, essential oil in the rose petals is evaporated and enters a condenser together with the steam to be condensed, and then enters a collecting tank to obtain fumigated mixed solution containing water, ethanol and essential oil;
step 4: and (3) mixing the absolute ethanol leaching solution obtained in the step (2) with the fumigation mixed solution obtained in the step (3) and stirring uniformly to obtain an ethanol essential oil mixed solution, placing the ethanol essential oil mixed solution in an oil-water separator, adding distilled water into the ethanol essential oil mixed solution, stirring, standing until the ethanol essential oil mixed solution is layered, and separating an ethanol aqueous solution at the lower part of the oil-water separator to obtain the essential oil at the upper part. Specifically, the essential oil in the rose petals is mainly composed of some esters, alkene and the like, which are dissolved in absolute ethyl alcohol and not dissolved in water, and the absolute ethyl alcohol and water can be mutually dissolved in any proportion, so that distilled water can be added into an ethanol essential oil mixed solution to separate the essential oil from an ethanol aqueous solution, then the ethanol aqueous solution of the lower part is separated, so that the essential oil of the upper part is obtained, and distilled water can be repeatedly added into the step for oil-water separation, so that the purity of the rose essential oil is improved.
Further, the soaking time of the rose petals in the absolute ethyl alcohol in the step 2 is 30min, and the ultrasonic vibration time is 10min.
Example 2
An extraction method of rose essential oil mainly comprises the following steps,
step 1: fresh rose petals with bright color, preferably rose petals without insect eyes and injury, are selected, cleaned and put into a dryer to dry the surface moisture;
step 2: soaking the dried rose petals in absolute ethyl alcohol, stirring, performing water bath ultrasonic vibration, and performing ultrasonic treatment to break cell walls inside the rose petals, so that the main components of the essential oil are easily separated out and dissolved in the absolute ethyl alcohol;
step 3: taking out the rose petals from the absolute ethyl alcohol, draining the absolute ethyl alcohol on the surfaces of the rose petals to obtain absolute ethyl alcohol leaching liquor, and then placing the rose petals in a distillation device for steam fumigation to obtain fumigation mixed liquor; specifically, as shown in fig. 1, rose petals are placed in a distillation pot, high-temperature steam is introduced from the bottom of the distillation pot to the interior of the distillation pot, the rose petals are fumigated by the high-temperature steam, essential oil in the rose petals is evaporated and enters a condenser together with the steam to be condensed, and then enters a collecting tank to obtain fumigated mixed solution containing water, ethanol and essential oil;
step 4: mixing the absolute ethanol leaching solution and the fumigation mixed solution, stirring uniformly to obtain ethanol essential oil mixed solution, placing the ethanol essential oil mixed solution in an oil-water separator, adding distilled water into the ethanol essential oil mixed solution, stirring, standing until the ethanol essential oil mixed solution is layered, and separating ethanol aqueous solution at the lower part of the oil-water separator to obtain the essential oil at the upper part. Specifically, the essential oil in the rose petals is mainly composed of some esters, alkene and the like, which are dissolved in absolute ethyl alcohol and not dissolved in water, and the absolute ethyl alcohol and water can be mutually dissolved in any proportion, so that distilled water can be added into an ethanol essential oil mixed solution to separate the essential oil from an ethanol aqueous solution, then the ethanol aqueous solution of the lower part is separated, so that the essential oil of the upper part is obtained, and distilled water can be repeatedly added into the step for oil-water separation, so that the purity of the rose essential oil is improved.
Further, the soaking time of the rose petals in the absolute ethyl alcohol in the step 2 is 60min, and the ultrasonic vibration time is 20min.
Example 3
An extraction method of rose essential oil mainly comprises the following steps,
step 1: fresh rose petals with bright color, preferably rose petals without insect eyes and injury, are selected, cleaned and put into a dryer to dry the surface moisture;
step 2: soaking the dried rose petals in absolute ethyl alcohol, stirring, performing water bath ultrasonic vibration, and performing ultrasonic treatment to break cell walls inside the rose petals, so that the main components of the essential oil are easily separated out and dissolved in the absolute ethyl alcohol;
step 3: taking out the rose petals from the absolute ethyl alcohol, draining the absolute ethyl alcohol on the surfaces of the rose petals to obtain absolute ethyl alcohol leaching liquor, and then placing the rose petals in a distillation device for steam fumigation to obtain fumigation mixed liquor; specifically, as shown in fig. 1, rose petals are placed in a distillation pot, high-temperature steam is introduced from the bottom of the distillation pot to the interior of the distillation pot, the rose petals are fumigated by the high-temperature steam, essential oil in the rose petals is evaporated and enters a condenser together with the steam to be condensed, and then enters a collecting tank to obtain fumigated mixed solution containing water, ethanol and essential oil;
step 4: mixing the absolute ethanol leaching solution and the fumigation mixed solution, stirring uniformly to obtain ethanol essential oil mixed solution, placing the ethanol essential oil mixed solution in an oil-water separator, adding distilled water into the ethanol essential oil mixed solution, stirring, standing until the ethanol essential oil mixed solution is layered, and separating ethanol aqueous solution at the lower part of the oil-water separator to obtain the essential oil at the upper part. Specifically, the essential oil in the rose petals is mainly composed of some esters, alkene and the like, which are dissolved in absolute ethyl alcohol and not dissolved in water, and the absolute ethyl alcohol and water can be mutually dissolved in any proportion, so that distilled water can be added into an ethanol essential oil mixed solution to separate the essential oil from an ethanol aqueous solution, then the ethanol aqueous solution of the lower part is separated, so that the essential oil of the upper part is obtained, and distilled water can be repeatedly added into the step for oil-water separation, so that the purity of the rose essential oil is improved.
Further, the soaking time of the rose petals in the absolute ethyl alcohol in the step 2 is 90min, and the ultrasonic vibration time is 30min.
Further, as shown in fig. 1 to 4, the distillation apparatus in step 3 in embodiments 1 to 3 includes a distillation pot 1, a condenser 2 and a collection tank 3 sequentially connected by a pipeline, that is, a first pipeline 4 is provided at the top of the distillation pot 1 and connected to the top of the condenser 2, a second pipeline 5 is provided at the bottom of the condenser 2 and connected to the collection tank 3, a condensed fumigation mixture is provided in the second pipeline 5, a horizontal distillation cylinder 6 is provided in the distillation pot 1, the distillation cylinder 6 is rotatably connected to the inner side wall of the distillation pot 1 by a rotation shaft 7, one end of the rotation shaft 7 penetrates through the side wall of the distillation pot 1 and is connected with a motor 8, one end of the rotation shaft 7 far away from the motor 8 is rotatably connected to the inner side wall of the distillation pot 1 by a bearing 9, and a plurality of trays are provided on the surface of the distillation cylinder 6.
The use principle of the distillation device is as follows: firstly, the rose petals are placed in the tray, high-temperature steam is introduced from the bottom of the distillation pot 1 to the inside of the distillation pot, then the motor 8 is started, the distillation cylinder 6 is driven to rotate through the rotating shaft 7, so that the rose petals located in the tray also rotate along with the distillation cylinder 6, the continuously rotating distillation cylinder 6 can ensure that the rose petals in each tray can be contacted with the high-temperature steam because the temperature of the steam entering from the bottom of the distillation pot 1 is the highest, thereby effectively fumigating the rose petals, the condition that the rose petals on the upper part cannot be effectively fumigated due to the temperature drop of the steam when placed layer by layer is avoided, the high-temperature steam with rose essential oil enters the condenser 2 through the first pipeline 4 to be condensed, and the obtained fumigating mixed liquid is collected in the collecting tank 3.
The bearing plate comprises a bottom support 10 and a cover body 11, the bottom support 10 is fixed on the surface of a distillation cylinder 6 through a support column 12, a first baffle 13 and a second baffle 14 are respectively arranged on two opposite sides of the bottom support 10, specifically, the first baffle 13 is arranged on the long side edge of the bottom support 10, the second baffle 14 is arranged on the short side edge of the bottom support 10, four sides of the bottom support 10 are surrounded by the first baffle 13 and the second baffle 14 to form a groove body for placing rose petals, the upper end of the second baffle 14 is provided with a fixing edge 15 extending outwards, the cover body 11 is provided with a connecting edge 16 matched with the fixing edge 14, and the cover body 11 is connected above the bottom support 10 in a covering manner, so that the rose petals are clamped and fixed up and down, and the rose petals can be fixed in the bearing plate.
Further, the first baffle 13, the second baffle 14, the bottom support 10 and the cover 11 are all of a screen structure, and water vapor is easy to penetrate through the screen structure and fully contact with rose petals, so that fumigation efficiency is improved.
Further, the bottom support 10 is provided with a plurality of regularly distributed positioning holes 17, and the bottom of the cover 11 is provided with positioning posts 18 matched with the positioning holes 17. When the cover 11 is covered on the bottom support 10, the positioning columns 18 are inserted into the positioning holes 17 one by one, so that the supporting plate is divided into small areas, and the rose petals are prevented from moving due to centripetal force when the distillation cylinder 6 rotates, so that stacking is caused.
Further, the bearing plates are of arc structures matched with the surfaces of the distillation cylinders 6, so that all the bearing plates can be spliced into a complete circle, and the surface space of the distillation cylinders 6 is utilized to the greatest extent.
Finally, it should be noted that: these embodiments are merely for illustrating the present invention and do not limit the scope of the present invention. Further, various other changes and modifications will be apparent to those skilled in the art from the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (3)
1. The extraction method of the rose essential oil is characterized by comprising the following steps of: mainly comprises the following steps of the method,
step 1: fresh rose petals with bright colors are selected, cleaned, and put into a dryer to dry the surface moisture;
step 2: soaking the dried rose petals in absolute ethyl alcohol, stirring and performing water bath ultrasonic vibration to obtain absolute ethyl alcohol leaching liquor;
step 3: taking out the rose petals from the absolute ethyl alcohol, draining the absolute ethyl alcohol on the surfaces of the rose petals, and then placing the rose petals into a distillation device for steam fumigation to obtain fumigation mixed liquid;
step 4: mixing the absolute ethanol leaching solution obtained in the step 2 with the fumigation mixed solution obtained in the step 3, uniformly stirring to obtain an ethanol essential oil mixed solution, placing the ethanol essential oil mixed solution into an oil-water separator, adding distilled water into the ethanol essential oil mixed solution, stirring, standing until the ethanol essential oil mixed solution is layered, and separating an ethanol aqueous solution at the lower part of the oil-water separator to obtain essential oil at the upper part;
the distillation device in the step 3 comprises a distillation pot (1), a condenser (2) and a collection tank (3) which are sequentially connected through pipelines, wherein a horizontal distillation cylinder (6) is arranged in the distillation pot (1), the distillation cylinder (6) is rotationally connected to the inner side wall of the distillation pot (1) through a rotating shaft (7), one end of the rotating shaft (7) penetrates through the side wall of the distillation pot (1) and is connected with a motor (8), and a plurality of supporting trays are arranged on the surface of the distillation cylinder (6);
the bearing plate comprises a bottom support (10) and a cover body (11), the bottom support (10) is fixed on the surface of a distillation cylinder (6) through a support column (12), a first baffle (13) and a second baffle (14) are respectively arranged on two opposite sides of the bottom support (10), a fixing edge (15) extending outwards is arranged at the upper end of the second baffle (14), and a connecting edge (16) matched with the fixing edge (15) is arranged on the cover body (11);
the first baffle (13), the second baffle (14), the bottom support (10) and the cover body (11) are all of screen structures;
a plurality of regularly distributed positioning holes (17) are formed in the base (10), and positioning columns (18) matched with the positioning holes (17) are formed in the bottom of the cover body (11).
2. The method for extracting rose essential oil according to claim 1, wherein: the soaking time of the rose petals in the absolute ethyl alcohol in the step 2 is 30-90min, and the ultrasonic vibration time is 10-30min.
3. The method for extracting rose essential oil according to claim 1, wherein: the bearing plate is of an arc-shaped structure matched with the surface of the distillation cylinder (6).
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| CN202210317036.7A CN114606059B (en) | 2022-03-29 | 2022-03-29 | Extraction method of rose essential oil |
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| CN202210317036.7A CN114606059B (en) | 2022-03-29 | 2022-03-29 | Extraction method of rose essential oil |
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| CN114606059B true CN114606059B (en) | 2023-09-01 |
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| JP2006291007A (en) * | 2005-04-08 | 2006-10-26 | Ncc:Kk | Method for extraction of essential oil from citrus and vacuum distillation apparatus for essential oil extraction |
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