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Method for extracting and purifying natural volatile oil from sophora flower by using supercritical CO2 fluid extraction process

A natural essential oil, supercritical technology, applied in the direction of essential oil/fragrance, fat production, etc., to achieve the effect of short process flow, easy industrialization, and simple equipment

Inactive Publication Date: 2002-11-20
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no solvent residues in the product, and no environmental issues such as pollutant discharge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Weigh 40 g of fresh Sophora japonica with an electronic balance, and evenly pack it into a stainless steel basket. Under the condition of pressure 40MPa and temperature 15℃, with supercritical CO 2 Continuous extraction for 120min. Sampling was carried out by a separator to obtain 0.25 g of pale yellow Sophora japonica oil.

Embodiment 2

[0011] Weigh 25g of dried Sophora japonica with an electronic balance (the sophora japonica fell to the ground after naturally withering, and then cleaned, air-dried and air-dried), and evenly put it into a stainless steel basket. Under the conditions of pressure 25MPa and temperature 40℃, supercritical CO 2 Continuous extraction for 240min. Sampling was carried out by a separator to obtain 0.15 g of pale yellow Sophora japonica oil.

Embodiment 3

[0013] Weigh 85g of fresh Sophora japonica with an electronic balance, and evenly pack it into a stainless steel basket. Under the condition of pressure 10MPa and temperature 60℃, with supercritical CO 2 Continuous extraction for 600min. Sampling was carried out by a separator to obtain 0.25 g of pale yellow Sophora japonica oil.

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Abstract

The supercritical CO2 fluid extraction method for extracting and purifying essential oil from sophora flower includes the following steps: firstly, cleaning sophora flower, drying by airing, using dried sophora flower and fresh sophora flower as raw material, using supercritical CO2 as extraction solvent, making extraction at 10-40 MPa and 15-65 deg.C, progressively reducing pressure under the condition of 15-65 deg.c and extracting for 2-10 hr., so that the sophora flower oil and CO2 can be naturally separated, the CO2 can be reused. Its essential oil recovering can be up to 90%.

Description

technical field [0001] The invention belongs to the field of chemical engineering and technology. It involves separation engineering technology, especially a kind of supercritical CO 2 A method for fluid extraction and purification of natural essential oil in Sophora japonica. Background technique [0002] Natural essential oil is a commonly used additive in food and cosmetics. Although its dosage is small, the added value it brings to the product is very considerable. The traditional production methods of flavors and fragrances are usually divided into two categories: organic solvent extraction and chemical synthesis. Although the organic solvent extraction method is relatively easy compared with the chemical synthesis method, in order to ensure that the content of toxic components in the product is less than the limit specified by the relevant state departments, that is, to remove the residual solvent as much as possible, the post-treatment process is bound to be very co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/00
Inventor 银建中丁信伟李岳毕明树喻健良王淑兰刘润杰由宏新周一卉
Owner DALIAN UNIV OF TECH
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