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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 effects on the human body. The country also has restrictive regulations on the use of chemically synthesized essential oils

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for extracting woody essential oil, comprising the following steps:

[0020] (1), wash the perennial woody juniper rhizome of cypress or yellow juniper, remove surface sand and soil impurities, then chop it into short wood chips, the length of the short wood chips is 3cm, the width is 1cm, and the thickness is 0.3cm. Then soak it in the saline ethanol solution for 2 hours, the mass fraction of sodium chloride in the saline ethanol solution is 5%, the mass fraction of ethanol is 4%, and the solvent is water. Use 30000Hz ultrasonic treatment during the soaking process; after soaking, use soft water to wash the treated short wood chips, then use a dryer to dry to make the water content at 8%, and after drying, crush it to 20 mesh particles to obtain fine wood powder;

[0021] (2) Put the fine wood powder in the reaction kettle and add an aqueous solution containing 0.05% cellulase, and treat it at a temperature of 55°C for 2 hours; then discharge the aqueous solut...

Embodiment 2

[0024] A method for extracting woody essential oil, comprising the following steps:

[0025] (1), wash the perennial woody juniper rhizome of cypress or yellow juniper, remove surface sand and soil impurities, then chop it into short wood chips, the length of short wood chips is 2cm, the width is 1.5cm, and the thickness is 0.5cm. Then soak it in the saline ethanol solution for 1.5h, the mass fraction of sodium chloride in the saline ethanol solution is 4%, the mass fraction of ethanol is 5%, and the solvent is water. Use 32000Hz ultrasonic treatment during the soaking process; after soaking, use soft water to wash the treated short wood chips, then use a dryer to dry to make the water content at 8%, and after drying, crush it to 15 mesh particles to obtain fine wood powder;

[0026] (2) Put the fine wood powder in the reactor and add an aqueous solution containing 0.08% cellulase, and treat it at a temperature of 50°C for 2 hours; then drain the aqueous solution in the reacto...

Embodiment 3

[0029] A method for extracting woody essential oil, comprising the following steps:

[0030] (1), wash the perennial woody juniper rhizome of cypress or yellow juniper, remove surface sand and soil impurities, then chop it into short wood chips, the length of short wood chips is 2cm, the width is 1.5cm, and the thickness is 0.5cm. Then soak it in the saline ethanol solution for 1.5h, the mass fraction of sodium chloride in the saline ethanol solution is 4%, the mass fraction of ethanol is 5%, and the solvent is water. Use 32000Hz ultrasonic treatment during the soaking process; after soaking, use soft water to wash the treated short wood chips, then use a dryer to dry to make the water content at 7%, and after drying, crush it to 18 mesh particles to obtain fine wood powder;

[0031] (2) Put the fine wood powder in the reaction kettle and add an aqueous solution containing 0.1% cellulase, and treat it at a temperature of 58°C for 2 hours; then discharge the aqueous solution in...

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PUM

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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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