Method for high selectively extracting Artemisia vulgaris essential oil

A high-selectivity, extraction technology, applied in essential oils/fragrances, fat production, etc., can solve the problems of extract aroma loss, large amount of solvent consumption, large consumption of organic solvents, etc., without destroying product activity and improving solubility , The effect of improving the extraction efficiency

Active Publication Date: 2018-07-06
ANYANG INST OF TECH +2
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AI Technical Summary

Problems solved by technology

The essential oil of Artemisia argyi is usually extracted by steam distillation, the extraction time is 6 hours, and the yield of essential oil is 0.4% (Zhang Yan, Study on the volatile oil components of Artemisia argyi[J]. Guangxi Plants, 2006, (01): 110-112.) ; This method (application number: 201210117605.X, 201611178491.4, 201710568403.X) "soaking and reflux extraction takes a long time (14-25 h), and the extraction at a high temperature for a long time will cause serious loss of the aroma of the extract, and the extraction rate Low; "A Method for Extracting Volatile Oil from Artemisia argyi (Application No.: 201410450639.X)" announced a method for extracting volatile oil from Artemisia argyi leaves with enzyme fermentation combined with continuous countercurrent ultrasonication. Although the yield of volatile oil is high, the operation is complicated and the fermentation process is time-consuming Long (5-7 days), and the consumption of organic solvents is large; "A Artemisia Artemisiae Essential Oil and Its Preparation Method (Application No.: 201510792656.6)" discloses a method of extraction with cyclohexane, ethanol reflux extraction, silica gel column, etc. The method for preparing Artemisia argyi essential oil, the quality of the obtained volatile oil is better, but the extraction process is complicated, the amount of solvent is large, and the time is long (refluxing for 2 h, soaking for 48-72 h, extraction for 1-2 h); supercritical extraction of Artemisia argyi volatile oil (application number : 201510878581.3, 201610716009.1), although it has many advantages, the investment and operation of equipment up to 700 atmospheres (US Patent US5843499) has brought difficulties to industrialization; in addition, there are also methods of preparing Artemisia argyi essential oil by using traditional subcritical extraction combined with molecular distillation technology Invention patent (application number: 201510752008.8), the production cycle is 18-20 hours, the purity of the product obtained by molecular distillation is high, but the investment in equipment is large, and it is difficult to realize industrialization

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  • Method for high selectively extracting Artemisia vulgaris essential oil
  • Method for high selectively extracting Artemisia vulgaris essential oil
  • Method for high selectively extracting Artemisia vulgaris essential oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Drawing of the standard curve of Artemisia argyi essential oil

[0030] Preparation of standard curve: Accurately weigh the essential oil of Artemisia argyi extracted by steam distillation and dilute it with n-hexane to a concentration of 0.015 mg / mL as a stock solution for later use. Precisely draw 1.0, 1.5, 2.0, 2.5, 3.0 mL of the stock solution into a 10 mL volumetric flask and dilute to the mark, perform wavelength scanning in the range of 200-400 nm, and record the absorbance at the maximum absorption wavelength, taking the absorbance A as the ordinate , the star anise essential oil concentration c (mg / mL) is the abscissa to draw the standard curve ( figure 2 ). And fit the regression equation:

[0031] y =149.6 x +0.049 (1)

[0032] Correlation coefficient: R 2 = 0.9875

[0033] Linear range: 0.0015-0.0045 mg / mL

[0034] Calculation of the purity of the essential oil: Accurately absorb 0.001 g of the northern Artemisia argyi essential oil extrac...

Embodiment 2

[0037] Example 2 Traditional subcritical butane extraction of Artemisia argyi essential oil

[0038] Grind and pass through a 40-mesh sieve with a water content of less than 8%. Take 100 g and place it in an extraction tank. Vacuumize until the vacuum in the extraction tank reaches -100 kPa. Inject subcritical butane for extraction into the extraction tank. As the extraction solvent, the Artemisia argyi sample was completely submerged, the mass volume ratio of Artemisia argyi and butane was 1:10 g / ml, the extraction temperature was controlled at 30°C by an automatic controller and thermal circulating water, the extraction pressure was 0.3 Mpa, and the extraction time was 30 minutes, 3 times of circular extraction; after the extraction, the liquid solvent is pumped into the evaporation tank, and the mugwort leaf residue and the liquid solvent are subjected to constant temperature and reduced pressure precipitating treatment respectively. The precipitating temperature is 30°C. G...

Embodiment 3

[0041] Embodiment 3 The method used in the present invention extracts Artemisia argyi essential oil

[0042] Grind and pass through a 40-mesh sieve with a water content of less than 8%. Take 100 g and place it in an extraction tank. Vacuumize until the vacuum in the extraction tank reaches -100 kPa. Inject subcritical butane for extraction into the extraction tank. As the extraction solvent, the Artemisia argyi sample was completely submerged, the mass volume ratio of Artemisia argyi and butane was 1:10 g / ml, and the entrainer for extraction was [C 4 C 10 im] CF 3 SO 3 The ionic liquid is 5g, the extraction temperature is controlled by the automatic controller and the far-infrared generator at the bottom of the extraction tank at 30°C, the far-infrared power is 800 W, the wavelength range is 25-200 μm, the extraction pressure is 0.3 Mpa, and the extraction time is 8 minutes. Circulate the extraction twice; after the extraction, the liquid solvent is pumped into the evaporat...

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Abstract

The invention relates to a method for high selectively extracting Artemisia vulgaris essential oil. The method comprises the following steps: (I) drying an Artemisia vulgaris raw material, and crushing into powder; (II) placing the Artemisia vulgaris powder in an extraction tank, vacuumizing to -100 kPa, pouring subcritical butane for extraction into the extraction tank as an extraction solvent, completing soaking a folium artemisia vulgaris sample by using the extraction solvent, adding an entrainer hydrophobic ion liquid [C4C10im]CF3SO3 for extraction, wherein the extraction heat is sourcedfrom a far-infrared generation apparatus arranged on the bottom of the extraction tank, and a glass viewing window is formed on the bottom of the extraction tank; and (III) pumping the liquid solventinto an evaporation tank, decompressing the liquid solvent at a constant temperature, and removing the solvent, thus obtaining the Artemisia vulgaris essential oil. The method has the advantages of simple process, low investment, high efficiency, and capability of producing the high-quality Artemisia vulgaris essential oil with high quality in an industrialization manner.

Description

technical field [0001] The invention relates to the field of natural product extraction, in particular to a method for extracting mugwort essential oil with simple process, high selectivity, high extraction rate and easy industrial production. Background technique [0002] North Ai ( Artemisia vulgaris L. ), is a perennial herb of the genus Artemisia in the family Asteraceae, and is called the "Four Famous Artemisias" in Chinese history together with Hai AI, Qi AI, and Qi AI. The whole herb of Bei Ai has the functions of warming Qi and blood, expelling cold and dampness, hemostasis, warming meridians, and preventing miscarriage. The content of North Artemisia argyi essential oil is rich, which is more than twice that of common Artemisia argyi leaves. It has a special aroma, and its aroma components are the main functional components of traditional moxibustion. Artemisia argyi essential oil has the effect of repelling mosquitoes, antibacterial, bactericidal, anti-virus, ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
CPCC11B9/025
Inventor 谷令彪梁秀丽杜磊祁鲲张守泉朱新亮蒋志惠
Owner ANYANG INST OF TECH
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