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
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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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