Extraction method of wood essential oil

An extraction method and essential oil technology, which is applied in the field of extraction of woody essential oils, can solve the problems of natural environment pollution, human side effects, etc., and achieve the effect of improving the extraction rate

Inactive Publication Date: 2016-01-27
SICHUAN YUTIANCHENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of chemical methods to produce essential oils also pollutes the natural environment and even causes certain side e

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] A method for extracting wood essential oil, including the following steps:

[0020] (1) Wash the perennial wooden cypress rhizomes of cypress or yellow cypress to remove the surface sand and soil impurities, and then chop them into short wood chips. The short wood chips are 3cm in length, 1cm in width, and 0.3cm in thickness. Then immerse it in a salt-containing ethanol solution for 2 hours. In the salt-containing ethanol solution, the mass fraction of sodium chloride is 5%, the mass fraction of ethanol is 4%, and the solvent is water. 30000Hz ultrasonic treatment is used during the soaking process; after soaking, the treated short wood chips are washed with soft water, and then dried with a dryer to have a moisture content of 8%. After drying, they are crushed to 20 mesh particles to obtain fine wood powder;

[0021] (2) Put the fine wood powder in the reactor and add the aqueous solution containing 0.05% cellulase, and treat it at 55℃ for 2h; then drain t...

Example Embodiment

[0023] Example 2

[0024] A method for extracting wood essential oil, including the following steps:

[0025] (1) Wash the perennial wooden cypress rhizomes of cypress or yellow cypress to remove the surface sand and impurities, and then chop them into short wood chips. The short wood chips are 2cm in length, 1.5cm in width, and 0.5cm in thickness. Then immerse it in a salt-containing ethanol solution for 1.5 hours. The mass fraction of sodium chloride in the salt-containing ethanol solution is 4%, the mass fraction of ethanol is 5%, and the solvent is water. 32000Hz ultrasonic treatment is used in the soaking process; after soaking, the treated short wood chips are washed with soft water, and then dried with a dryer to make the water content 8%, and after drying, they are crushed to 15 mesh particles to obtain fine wood powder;

[0026] (2) Put the fine wood powder in the reactor and add the aqueous solution containing 0.08% cellulase, and treat it at 50℃ for 2h; then drain the aqu...

Example Embodiment

[0028] Example 3

[0029] A method for extracting wood essential oil, including the following steps:

[0030] (1) Wash the perennial wooden cypress rhizomes of cypress or yellow cypress to remove the surface sand and impurities, and then chop them into short wood chips. The short wood chips are 2cm in length, 1.5cm in width, and 0.5cm in thickness. Then immerse it in a salt-containing ethanol solution for 1.5 hours. The mass fraction of sodium chloride in the salt-containing ethanol solution is 4%, the mass fraction of ethanol is 5%, and the solvent is water. 32000Hz ultrasonic treatment is used during the soaking process; after soaking, the treated short wood chips are washed with soft water, and then dried with a dryer to make the water content 7%, and after drying, they are crushed to 18 mesh particles to obtain fine wood powder;

[0031] (2) Put the fine wood powder in the reactor and add the aqueous solution containing 0.1% cellulase, and treat it at a temperature of 58℃ for 2h...

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Abstract

The invention discloses an extraction method of wood essential oil. The extraction method comprises the following steps: cutting Japan cypress or yellow cedar into short wood pieces to perform pretreatment, drying and crushing after pretreatment, and performing reduced pressure distillation after crushing; separating the liquid, obtained by the reduced pressure distillation, by virtue of an oil-water separator to obtain an oil phase and a water phase respectively so as to obtain initial oil; drying the fine wood four extracted by the reduced pressure distillation, and putting the dried wood flour into a supercritical carbon dioxide extraction device to extract essential oil; and combining the essential oil obtained by the first two steps to obtain total essential oil. According to the method disclosed by the invention, wood is dried and crushed into fine powder after pretreatment, the initial oil is obtained by virtue of reduced pressure distillation, and residues are subjected to secondary extraction by using a supercritical carbon dioxide process, so that the extraction rate is improved, and cypress essential oil with higher purity is obtained.

Description

technical field [0001] The invention relates to a plant essential oil extraction method, in particular to a woody essential oil extraction method. Background technique [0002] Essential oils are widely used in cigarette making, brewing, food and beverage, pharmaceuticals, cosmetics and many other fields. Essential oils are basically divided into two categories: one is the essential oils synthesized by chemical methods, which have a larger output and lower production cost, and the other is pure natural essential oils extracted from plants. , The price of pure natural essential oils is relatively high. Although the essential oils synthesized by chemical methods can also meet the needs of production, there is still a large gap between the natural purity and the comfort of the human body's senses with respect to its fragrance and aroma and the essential oils extracted from plants. The production of essential oils by chemical methods also pollutes the natural environment, and ...

Claims

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Application Information

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IPC IPC(8): C11B9/00
Inventor 林爱明
Owner SICHUAN YUTIANCHENG TECH CO LTD
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