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Method for extracting angelica oil from angelica

A technology of angelica oil and angelica, applied in the direction of fat oil/fat production, fat generation, etc., can solve the problem of extracting angelica oil that has not yet been seen, and achieve the effect of easy industrial control, good solvent characteristics, and easy volatility

Inactive Publication Date: 2013-02-06
甘肃省轻工研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] According to literature and patent retrieval, so far there has been no report on the method of extracting angelica oil from angelica using subcritical tetrafluoroethane (R134a) fluid

Method used

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  • Method for extracting angelica oil from angelica

Examples

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Effect test

Embodiment 1

[0026] Example 1: see figure 1 , screening, cleaning, and drying the raw materials of Angelica sinensis to a water content of ≤13%, weighing 10kg, pulverizing to 40-60 mesh through a pulverizer, putting it into the extraction kettle 7, closing the feed valve, and vacuuming with a vacuum pump 3. to 1×10 4 Below Pa, the air in the extraction kettle is discharged to prevent the extraction solvent tetrafluoroethane from being mixed with air, which affects the extraction pressure in the system; then the tetrafluoroethane solvent gas in the solvent gas tank 1 is introduced into the solvent liquefaction storage tank 2 through a conduit, Condensate into a liquid solvent through the condensation jacket 4; the tetrafluoroethane liquid solvent stored in the storage tank 2 is introduced into the extraction kettle through the plunger pump 5, and the liquid level is observed through the sight glass until the angelica raw material is submerged; heated by the heater 6, The heating jacket 8 i...

Embodiment 2

[0027] Example 2: see figure 1 , screening, cleaning, and drying the raw materials of Angelica sinensis to a water content of ≤13%, weighing 10kg, pulverizing to 40-60 mesh through a pulverizer, putting it into the extraction kettle 7, closing the feed valve, and vacuuming with a vacuum pump 3. to 1×10 4Below Pa, the air in the extraction kettle is discharged to prevent the extraction solvent tetrafluoroethane from being mixed with air, which affects the extraction pressure in the system; then the tetrafluoroethane solvent gas in the solvent gas tank 1 is introduced into the solvent liquefaction storage tank 2 through a conduit, Condensate into a liquid solvent through the condensation jacket 4; the tetrafluoroethane liquid solvent stored in the storage tank 2 is introduced into the extraction kettle through the plunger pump 5, and the liquid level is observed through the sight glass until the angelica raw material is submerged; heated by the heater 6, The heating jacket 8 is...

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Abstract

The invention discloses a method for extracting angelica oil. The method is mainly characterized by comprising the following steps of: (1) firstly screening the angelica raw material, cleaning and drying until the water content is less than or equal to 13%, and grinding to 40-60 meshes by a grinder; (2) putting the dried and ground angelica into an extraction kettle, vacuumizing until the pressure is below 1*10<4>Pa, and exhausting the air in the extraction kettle; (3) leading a tetrafluoroethane solution into the extraction kettle by a plunger pump until the angelica raw material is submerged by the liquid level according to the observation through a sight glass; (4) heating and stirring, and starting extraction, wherein the extraction pressure is 0.8-1.5MPa, the extraction temperature is 35-40 DEGE C, each extraction process lasts for 45min, and the extraction is performed twice; (5) performing reduced-pressure heating evaporation and separation in a separation kettle, heating and keeping the separation temperature at 45-50 DEG C, and pumping the negative pressure by a diaphragm compressor to gradually reduce the pressure to 5*10<-2>Pa, wherein each separation process lasts for 30min, and the separation is performed twice; and (6) after the subcritical extraction is over, merging the angelica oil obtained by the extraction twice, performing centrifugal separation by a high-speed centrifuge, and filtering to obtain the final angelica oil product. According to experimental verification, the final yield of the angelica oil under the technological conditions is 2.0%, the content of ligustilide is 62.16%, and the appearance quality of the product is good.

Description

technical field [0001] The invention belongs to the field of traditional Chinese medicine extracts, and in particular relates to a method for extracting angelica oil from angelica by using a subcritical tetrafluoroethane fluid. Background technique [0002] Angelica is the dried root of the Umbelliferae plant Angelica sinensis. Angelica sinensis is sweet, pungent, and warm in nature. Angelica has a long history of medicinal use and has been recorded in successive dynasties of herbal medicines. It is one of the commonly used Chinese herbal medicines in traditional Chinese medicine and is known as "ten directions and nine returns". In the "Notice on Further Regulating the Management of Health Food Raw Materials" issued by the Ministry of Health, angelica is listed as a raw material that can be used in health food. Angelica is an authentic medicinal material in Gansu, Gansu Minxian Angelica (commonly known as "Mingui"), has a cultivation history of more than 1,700 years, and i...

Claims

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Application Information

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IPC IPC(8): C11B1/00C11B1/04C11B1/10
Inventor 于长青赵煜张晓雪郝琴魏文慧
Owner 甘肃省轻工研究院有限责任公司
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