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Extraction method for plant essential oil

An extraction method and plant essential oil technology, which are applied in the field of plant essential oil extraction, can solve problems such as low utilization rate of raw materials, and achieve the effects of improving utilization rate of raw materials, small temperature change, and avoiding heat volatilization.

Pending Publication Date: 2021-11-30
SUNHOPE TIANJIN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides a method for extracting plant essential oils, which solves the problem of low utilization rate of raw materials in extracting pine needle essential oil from Pine massoniana in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiments of the present invention provide a method for extracting plant essential oils, comprising the following extraction steps:

[0029] Step 1: Pretreatment of pine needles

[0030] Put the freshly picked masson pine needles into pure water for cleaning, then put the cleaned masson pine needles into the air-flow ultrafine grinding equipment, and crush the masson pine pine needles to 30 microns. The airflow ultrafine grinding equipment can make horsetail The pine needle powder is pulverized very finely, the particle size distribution range is narrower, and the particle size is more uniform. Because the gas expands at the nozzle to cool down, the pulverization process is not accompanied by heat generation, so the pulverization temperature rise is very low, which can reduce the volatilization of essential oil components during the pulverization process. ;

[0031] Step 2: Microwave-assisted enzymatic hydrolysis

[0032] Use B acid and L acid to adjust the pH to 4....

Embodiment 2

[0040] Embodiments of the present invention provide a method for extracting plant essential oils, comprising the following extraction steps:

[0041] Step 1: Pretreatment of pine needles

[0042] Put the freshly picked masson pine needles into pure water for cleaning, then put the cleaned masson pine needles into the air-flow ultrafine grinding equipment, and crush the masson pine pine needles to 35 microns. The airflow ultrafine grinding equipment can make horsetail The pine needle powder is pulverized very finely, the particle size distribution range is narrower, and the particle size is more uniform. Because the gas expands at the nozzle to cool down, the pulverization process is not accompanied by heat generation, so the pulverization temperature rise is very low, which can reduce the volatilization of essential oil components during the pulverization process. ;

[0043] Step 2: Microwave-assisted enzymatic hydrolysis

[0044] Use B acid and L acid to adjust the pH of th...

Embodiment 3

[0052] Embodiments of the present invention provide a method for extracting plant essential oils, comprising the following extraction steps:

[0053] Step 1: Pretreatment of pine needles

[0054]Put the freshly picked masson pine needles into pure water for cleaning, then put the cleaned masson pine needles into the air-flow ultrafine grinding equipment, and crush the masson pine pine needles to 35 microns. The airflow ultrafine grinding equipment can make horsetail The pine needle powder is pulverized very finely, the particle size distribution range is narrower, and the particle size is more uniform. Because the gas expands at the nozzle to cool down, the pulverization process is not accompanied by heat generation, so the pulverization temperature rise is very low, which can reduce the volatilization of essential oil components during the pulverization process. ;

[0055] Step 2: Microwave-assisted enzymatic hydrolysis

[0056] Use B acid and L acid to adjust the PH to 5.5...

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Abstract

The invention provides an extraction method for plant essential oil, and relates to the technical field of essential oil extraction. The extraction method for plant essential oil comprises the following extraction steps: step 1, pine needle pretreatment; step 2, microwave-assisted enzymolysis; step 3, centrifugal separation and purification; step 4, essential oil extraction; and step 5, catalytic conversion. The decomposition efficiency is improved through microwave-assisted enzymolysis. Due to the action of an H beta molecular sieve, carbon dioxide generated in the enzyme action can be reduced, so that the pH value cannot be changed. Due to the adsorption effect of the H beta molecular sieve on water, the components subjected to enzymolysis can be concentrated, subsequent cellulose anion exchange column purification is facilitated, and higher-quality pine needle essential oil is obtained. Furfural is obtained from the residual product under the action of gamma-valerolactone, hydrogen-type mordenite and the H beta molecular sieve, so that the utilization rate of the raw materials is greatly improved.

Description

technical field [0001] The invention relates to the technical field of essential oil extraction, in particular to an extraction method for plant essential oil. Background technique [0002] Contain abundant essential oil in the pine needle, and its main component is terpene alcohol, terpene, ether, ketone, phenol and phenol fat. Pine needle essential oil is a light yellow or dark yellow liquid with a pleasant aroma unique to pine needle oil obtained by extraction and fractionation from pine stems and leaves. It is widely used, in addition to being used as a raw material for spices and synthetic spices, it can also be used as a solvent for gums, resins, oils, cellulose ethers, etc., a flotation agent for minerals, a denaturant for alcohol, a defoamer, and a wetting agent. Agents, fungicides and textile processing, etc. [0003] Due to recent studies, pine needle essential oil has a strong inhibitory effect on yeast, Clostridium and Fusarium moniliforme in green fodder stora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
CPCC11B9/02C11B9/022C11B9/025
Inventor 张嵘
Owner SUNHOPE TIANJIN TECH DEV CO LTD
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