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A kind of extraction process of thyme essential oil

An extraction process and essential oil technology, which is applied in the direction of essential oil/fragrance, fat production, etc., can solve the problems of low extraction rate and incomplete extraction of essential oil, and achieve the effect of simple extraction process, convenient follow-up processing, and reduced loss of essential oil

Active Publication Date: 2021-07-20
郑州雪麦龙食品香料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses organic solvents such as ethanol, n-hexane or 3-chloromethane, which cannot completely extract the essential oil, and the extraction rate is relatively low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of extraction technology of thyme essential oil, comprises the following steps:

[0028] (1) Thyme whole plant is crushed at -50°C at low temperature, and the particle size after crushing is 30 mesh to obtain thyme powder, wherein the moisture content of whole thyme plant is 7%;

[0029] (2) Put the thyme powder in the extraction kettle, add 4 times the weight of the extraction agent soybean oil, soak for 30 minutes, turn on the vacuum pump, wait until the pressure in the extraction kettle reaches -0.1Mpa, and make the solvent The solvent butane in the tank is injected into the extraction tank. Under the conditions of extraction temperature of 55°C and extraction pressure of 0.9 MPa, after extraction for 7 hours, the extract enters the separation tank;

[0030] (3) The extract is separated in the separation tank at a temperature of 55°C and a pressure of -0.1MPa for 5 minutes. After the butane is separated, it is returned to the solvent tank, and the thyme mixed ...

Embodiment 2

[0034] A kind of extraction technology of thyme essential oil, comprises the following steps:

[0035] (1) Thyme whole plant is crushed at -70°C at low temperature, the particle size after crushing is 50 mesh, and thyme powder is obtained, wherein the moisture content of whole thyme plant is 10%;

[0036] (2) Put the thyme powder in the extraction kettle, add 3 times the weight of the extraction agent soybean oil, soak for 30 minutes, turn on the vacuum pump, wait until the pressure in the extraction kettle reaches -0.1Mpa, and make the solvent The solvent butane in the tank is injected into the extraction tank. Under the conditions of extraction temperature of 60°C and extraction pressure of 1.0 MPa, after extraction for 6 hours, the extract enters the separation tank;

[0037] (3) The extract is separated in the separation tank at a temperature of 55°C and a pressure of -0.1MPa for 5 minutes. After the butane is separated, it is returned to the solvent tank, and the thyme mi...

Embodiment 3

[0041] A kind of extraction technology of thyme essential oil, comprises the following steps:

[0042] (1) Thyme whole plant is crushed at -90°C at low temperature, and the particle size after crushing is 40 mesh to obtain thyme powder, wherein the moisture content of whole thyme plant is 10%;

[0043] (2) Put the thyme powder in the extraction kettle, add 2 times the weight of the extraction agent, and the extraction agent is a mixture of petroleum ether: ethanol: soybean oil in a weight ratio of 1:1:10, soak for 30 minutes, and turn on the vacuum pump , when the pressure in the extraction kettle reaches -0.1Mpa, the solvent butane in the solvent tank is injected into the extraction kettle through the pressure difference between the extraction kettle and the solvent tank. After extracting for 5 hours, the extract enters the separation tank;

[0044] (3) The extract is separated in the separation tank at a temperature of 55°C and a pressure of -0.1MPa for 5 minutes. After the...

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PUM

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Abstract

The invention discloses an extraction process of thyme essential oil, belonging to the technical field of essential oil extraction, comprising the following steps: (1) crushing the whole thyme plant to obtain thyme powder; (2) placing the thyme powder in an extraction kettle, adding 2-4 times the weight of the extractant, using subcritical butane to extract to obtain the extract; (3) the extract is separated to obtain gaseous butane and thyme mixed oil, the gaseous butane is recycled into the solvent tank, and the thyme mixed oil is collected. Thyme essential oil is obtained through processing; by improving the extraction process, the loss of thyme essential oil is small and the extraction rate is high.

Description

technical field [0001] The invention relates to the technical field of essential oil extraction, in particular to a process for extracting thyme essential oil. Background technique [0002] Thyme is widely distributed and mainly grows in mountains, river banks or beaches, and has high edible and medicinal application values. And thyme has a rich fragrance, which can be used as a natural condiment; in addition, the essential oil contained in it has strong antioxidant and antibacterial properties, and is an excellent natural preservative, antioxidant and food stabilizer, so it is widely used in medicine, Cosmetics, food and other industries. The extraction methods mainly include steam distillation, supercritical fluid extraction and two-phase extraction. [0003] Chinese Patent Publication No. CN106221937A discloses a method for extracting thyme essential oil. The steps are as follows: 1) Spray a carrier agent accounting for 0.3-0.5% of thyme weight into thyme, then add thym...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B9/02
CPCC11B9/025
Inventor 邓德伟王明奇牛星
Owner 郑州雪麦龙食品香料有限公司
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