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A kind of extraction process of citronella oil

An extraction process and technology of citronella oil, applied in the directions of essential oils/spice, fat production, etc., can solve the problems of low extraction rate of fat-soluble components, and achieve the effects of convenient subsequent extraction, reduction of essential oil loss, and simple extraction process

Active Publication Date: 2021-10-26
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

The entrainer used in this invention patent has a high extraction rate for water-soluble components in essential oils, but a low extraction rate for fat-soluble components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of extraction process of citronella oil, comprises the following steps:

[0029] (1) Lemongrass is ground at -50°C at a low temperature to 20 mesh to obtain lemongrass powder;

[0030] (2) Put the citronella 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 use the pressure difference between the extraction kettle and the solvent tank. The solvent butane in the solvent tank is injected into the extraction kettle. Under the conditions of extraction temperature of 55°C and extraction pressure of 1.0MPa, after extraction for 7 hours, the extract enters the separation tank;

[0031] (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 solvent is separated, it returns to the solvent tank, and the citronella mixed oil is collected from the...

Embodiment 2

[0036] A kind of extraction process of citronella oil, comprises the following steps:

[0037] (1) Lemongrass is ground at -70°C at a low temperature to 30 mesh to obtain lemongrass powder;

[0038] (2) Put the citronella powder in the extraction kettle, add 5 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 use the pressure difference between the extraction kettle and the solvent tank to make The solvent butane in the solvent tank is injected into the extraction kettle. Under the conditions of extraction temperature of 60°C and extraction pressure of 1.2MPa, after extraction for 6.5 hours, the extract enters the separation tank;

[0039] (3) The extract is in the separation tank, and the butane is precipitated and separated for 5 minutes at a temperature of 55 °C and a pressure of -0.1 MPa. After the butane is separated, it is returned to the solvent tank, ...

Embodiment 3

[0043] A kind of extraction process of citronella oil, comprises the following steps:

[0044] (1) The temperature of citronella grass was lowered to -70°C before pulverization, and the temperature was raised to room temperature at a constant speed of 2°C / min, and then pulverized at -90°C at a low temperature to 50 mesh to obtain citronella powder;

[0045](2) Put the citronella powder in the extraction kettle, add 6 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 use the pressure difference between the extraction kettle and the solvent tank. The solvent butane in the solvent tank is injected into the extraction kettle. Under the conditions of extraction temperature of 65°C and extraction pressure of 1.5MPa, after extraction for 6 hours, the extract enters the separation tank;

[0046] (3) The extract is separated in the separation tank at a temperature of ...

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Abstract

The invention discloses a process for extracting citronella oil, belonging to the technical field of essential oil extraction, comprising the following steps: (1) pulverizing citronella grass to obtain citronella powder; (2) placing the citronella powder in an extraction kettle, adding 4 ‑6 times the weight of the extractant, use subcritical butane to extract to obtain the extract; (3) separate the extract to obtain gaseous butane and citronella mixed oil, gaseous butane is recycled into the solvent tank, and citronella mixed oil is collected ; (4) After further separation and treatment, citronella oil was obtained. By improving the extraction process, the loss of citronella 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 citronella oil. Background technique [0002] Lemongrass is a collective name for about 55 aromatic plants of the genus Citronella, also known as citronella, and is one of the common herbs. Because of its lemony aroma, it is also called lemongrass. It is quite effective in treating rheumatism, treating migraine, anti-infection, improving digestive function, deodorizing and repelling insects. Anti-infection, astringent skin, conditioning greasy unclean skin. It is the most widely used essential oil in aromatherapy and medical methods to impart a sense of freshness and restore balance to the body and mind; it can also be used indoors as a fragrance. The citronella essential oil on the market is generally obtained by steam distillation, but the present invention uses subcritical extraction technology to effectively extract the essential o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B9/02
CPCC11B9/02C11B9/025
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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