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Process for extracting and refining lavender oil

A technology of lavender oil and a new method, which is applied in the directions of essential oil/fragrance, extraction distillation, liquid solution solvent extraction, etc., can solve the problem that waxy components are difficult to remove, and achieve mild conditions, low separation temperature and high extraction rate Effect

Inactive Publication Date: 2007-01-17
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method simply removes wax by separating pressure and temperature changes, which can achieve a certain purification purpose, but it is often difficult to remove the waxy components in essential oils simply by relying on pressure and temperature changes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] Put 1 kg of lavender crushed to 20 mesh into the extraction kettle, control the extraction temperature to 40°C, the extraction pressure to 10MPa, the pressure of the rectification tower to 7MPa, the temperature at a to 80°C, the temperature at b to 50°C, and the temperature at c to 35°C, the pressure of the analysis kettle is 4.5MPa, the temperature is 30°C, and the flow rate of carbon dioxide is 10L / h. After 2 hours of extraction, the analysis extract is taken out from the analysis kettle, that is, refined lavender oil, and the yield is 2.18%. The waxy component was collected from the rectification tower, yield 0.13%.

example 2

[0024] Put 1.5 kg of lavender crushed to 60 mesh into the extraction kettle, control the extraction temperature to 50°C, the extraction pressure to 20MPa, the pressure of the rectification tower to 8MPa, the temperature at a is 75°C, the temperature at b is 60°C, and the temperature at c is 45°C, the pressure of the analysis kettle is 4.5MPa, the temperature is 30°C, and the flow rate of carbon dioxide is 15L / h. After 2.5 hours of extraction, the analysis extract is taken out from the analysis kettle, that is, refined lavender oil, and the yield is 2.5%. The waxy component was collected from the rectification tower with a yield of 0.17%.

example 3

[0026] Put 1.2 kg of lavender crushed to 40 mesh into the extraction kettle, control the extraction temperature to 60°C, the extraction pressure to 15MPa, the pressure of the rectification tower to 8MPa, the temperature at a is 70°C, the temperature at b is 60°C, and the temperature at c is 50°C, the pressure of the analysis kettle is 4.5MPa, the temperature is 40°C, and the flow rate of carbon dioxide is 10L / h. After 2 hours of extraction, the analysis extract is taken out from the analysis kettle, that is, refined lavender oil, and the yield is 2.33%. The waxy component was collected from the rectification tower, yield 0.15%.

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PUM

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Abstract

A process for extracting and refining lavender oil includes such steps as supercritical CO2 extracting, temp-controlled three-stage rectifying for lowering pressure, analyzing for further lowering pressure, and regulating the temp of CO2 to remove wax.

Description

technical field [0001] The present invention relates to a kind of supercritical CO 2 Process for the preparation of wax-removed lavender oil by fluid technology. Background technique [0002] Lavender is a perennial herb of Lamiaceae. Lavender oil is extracted from flower spikes. The essential oil has the functions of sterilization, scar removal, refreshing and calming. The traditional method of extracting lavender oil is steam distillation, which is to distill lavender oil with water vapor, then condense, and separate essential oil from water through an oil-water separator. This method has a high operating temperature and will not only lose lavender The top aroma components of essential oils are easy to change the easily hydrolyzed, easily oxidized and heat-sensitive substances in the essential oils and lose their original efficacy, which limits the application of their extracted products in industries such as medicine and food. [0003] Supercritical CO 2 Extraction tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B9/02B01D3/40B01D11/04
Inventor 廖兵车国勇庞浩张镜澄刘峻岭
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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