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Method for preparing cypress essential oil by combining water vapor distillation with supercritical CO2 extraction

A steam distillation and supercritical technology, applied in the direction of essential oils/spices, fat production, etc., can solve the problems of dark color, low yield, residual extraction solvent, etc., to achieve natural fragrance, improve grade, and clear color. Effect

Inactive Publication Date: 2012-12-05
广西森呼吸科技工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The yield of extrusion method and cold soaking method is also on the low side
However, the solvent extraction method is very easy to cause residual extraction solvents. Some toxic and harmful solvents greatly affect the quality of essential oils. Essential oils often have a pungent smell, which is manifested as impure fragrance, too dark color, poor transparency, etc., and The treatment of organic solvents often causes environmental pollution
Supercritical CO 2 Extraction method is a green and efficient essential oil extraction method, but this method cannot obtain volatile and water-soluble active ingredients

Method used

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  • Method for preparing cypress essential oil by combining water vapor distillation with supercritical CO2 extraction
  • Method for preparing cypress essential oil by combining water vapor distillation with supercritical CO2 extraction
  • Method for preparing cypress essential oil by combining water vapor distillation with supercritical CO2 extraction

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Experimental program
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Effect test

Embodiment 1

[0027] Specific steps are as follows:

[0028] (1) 200 kg of perennial woody juniper rhizomes of cypress and yellow juniper provided by forest sites in Sichuan, Shaanxi, Yunnan, Guangxi and other provinces in western China, washed with a high-pressure water gun to remove impurities, and then baked with an infrared dryer until the water content is 10% The following; finally cut into dry wood chips with a length of about 7 cm, a width of about 3 cm, and a thickness of 0.3 cm with a mechanical guillotine. Finely powder the dry wood chips to particles below 5 mesh, fill them into the bottom of the steam distillation tank and keep the wood chips evenly distributed.

[0029] (2) Continuously feed water vapor at 100°C to the bottom of the distillation tank, open the steam pipeline above the distillation tank, and connect the serpentine condenser for 2 hours. After the steam is condensed, the obtained liquid enters the constant temperature oil-water separator to separate the oil and ...

Embodiment 2

[0033] Specific steps are as follows:

[0034] (1) 220 kg of perennial woody juniper rhizomes of cypress and yellow juniper provided by forest sites in Sichuan, Shaanxi, Yunnan, Guangxi and other provinces in western China, washed with a high-pressure water gun to remove impurities, and then baked with an infrared dryer until the water content is 10% The following; finally cut into dry wood chips with a length of about 7 cm, a width of about 3 cm, and a thickness of 0.3 cm with a mechanical guillotine. Finely powder the dry wood chips to particles below 15 mesh, fill the bottom of the steam distillation tank and keep the wood chips evenly distributed.

[0035] (2) Continuously feed water vapor at 100°C to the bottom of the distillation tank, open the steam pipeline above the distillation tank, and connect the serpentine condenser for 2.5 hours. After the steam is condensed, the obtained liquid enters the constant temperature oil-water separator to separate the oil and water p...

Embodiment 3

[0039] Specific steps are as follows:

[0040](1) 240 kg of perennial woody juniper rhizomes of cypress and yellow juniper provided by forest sites in Sichuan, Shaanxi, Yunnan, Guangxi and other provinces in western China, washed with a high-pressure water gun to remove impurities, and then baked with an infrared dryer until the water content is 10% The following; finally cut into dry wood chips with a length of about 7 cm, a width of about 3 cm, and a thickness of 0.3 cm with a mechanical guillotine. Finely powder the dry wood chips to particles below 30 mesh, fill the bottom of the steam distillation tank and keep the wood chips evenly distributed.

[0041] (2) Continuously feed water vapor at 100°C to the bottom of the distillation tank, open the steam pipeline above the distillation tank, and connect the serpentine condenser for 3 hours. After condensing the steam, the obtained liquid enters the constant temperature oil-water separator to separate the two phases of oil an...

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Abstract

The invention relates to a method for preparing cypress essential oil by combining water vapor distillation with supercritical CO2 extraction. The obtained cypress essential oil has clear luster, natural fragrant flavor and double efficacies of heath care and medical treatment. The production process is environment-friendly. The method comprises the following steps: firstly, cleaning washing perennial woody cypress rootstock and drying; finely crushing dry cypress wood ship, feeding the crushed dry cypress wood ships into the bottom of a water vapor distillation tank and enabling the wood chips to be uniformly distributed; then distilling the wood chips with water steam, enabling the obtained liquid to enter a constant-temperature oil-water separator to obtain the cypress essential oil and cypress hydrolat, namely a solution in a water phase; collecting the cypress wood chips subjected to the distillation and extraction and filling the cypress wood chips into an extraction kettle; setting the temperature to be 45-60D EG C, the pressure to be 20-30MPa, the dynamic extraction time to be 2-3 hours and the static extraction time to be 3 hours; secondarily extracting the cypress in the extraction kettle with supercritical CO2; and finally, mixing the essential oil obtained by distillation of the water steam with the essential oil obtained by extraction of the supercritical CO2, adding active carbon for decoloring and filtering out impurities by using a filter screen to obtain the cypress essential oil.

Description

technical field [0001] The present invention relates to a kind of extraction method of essential oil, more specifically relate to a kind of steam distillation combined with supercritical CO 2 The extraction method prepares the method for obtaining the essential oil of juniper wood. technical background [0002] Essential oil is a general term for certain volatile oily components in plants. It has more biomedical activities, such as anti-inflammatory, analgesic, calming, insect repelling, expectorant, cough, wind, sweating, sterilization, skin care, etc. It is of great significance to improve the normal physiological activities of the human body, promote and protect the immune system. Studies have shown that different essential oils have beneficial effects on endocrine, metabolism, urinary system, sexually transmitted diseases, immune system, gynecological diseases, muscle and bone diseases, skin diseases, nervous system and mental diseases, eyes, ears, nose, oral cavity, de...

Claims

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Application Information

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IPC IPC(8): C11B9/02
Inventor 李竟铭王立升刘旭杨华蒋敏捷
Owner 广西森呼吸科技工程有限公司
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