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Process for extracting eaglewood essential oil by using supercritical carbon dioxide

A technology of carbon dioxide and agarwood essential oil, which is applied in the directions of essential oil/spice, fat production, etc., can solve the problems of high labor cost of equipment, residues, low content of agarwood essential oil, etc., and achieves low time and equipment cost, safe production process, and extraction rate. high effect

Inactive Publication Date: 2013-10-16
大连卓尔高科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current extraction methods of agarwood are as follows. Steam distillation is a common method for extracting volatile oil from agarwood. The active ingredients are easily destroyed and volatilized, and it takes a long time. There are also extractions using organic solvents such as gasoline or petroleum ether, which are flammable, explosive, and organic. The problem of solvent residue
Moreover, the content of agarwood essential oil in agarwood is very low, its oil content is about 3 / 10,000, and the specific gravity of agarwood is about 0.2kg / L. These characteristics bring insurmountable difficulties to the extraction of agarwood essential oil. Investing a lot of equipment and labor costs are huge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: (1) Take 1 kg of agarwood and grind it to a fineness of 20 mesh, soak it in 95% ethanol for 12 hours, and the mass ratio of agarwood to ethanol is 1:5;

[0016] (2) Filter the agarwood, take the ethanol soaking solution and evaporate it with a rotary evaporator to obtain the agarwood paste;

[0017] (3) Put the agarwood paste into a supercritical extraction kettle for extraction, one-stage separation, and the process parameters of the supercritical extraction operation are set as follows: extraction pressure 22Mpa, temperature 47°C, carbon dioxide fluid flow rate 2L / h, separation pressure 8Mpa , the separation temperature is 40°C, the extraction time is 2h, and the agarwood essential oil is collected.

[0018] The product yield weight percent of agarwood essential oil is 3.57%.

Embodiment 2

[0019] Example 2: (1) Take 1 kg of agarwood and grind it to a fineness of 20 mesh, soak it in 95% ethanol for 12 hours, and the mass ratio of agarwood to ethanol is 1:5;

[0020] (2) Filter the agarwood, take the ethanol soaking solution and evaporate it with a rotary evaporator to obtain the agarwood paste;

[0021] (3) Put the agarwood paste into a supercritical extraction kettle for extraction and secondary separation. The process parameters of the supercritical extraction operation are set as follows: extraction pressure 22Mpa, temperature 45°C, carbon dioxide fluid flow rate 6L / h, primary separation pressure is 8Mpa, the primary separation temperature is 40°C, the secondary separation pressure is 6Mpa, and the secondary separation temperature is 40°C; the extraction time is 3h, and the agarwood essential oil is collected.

[0022] The product of agarwood essential oil is 37.8g obtained by primary separation, and 0.3g obtained by secondary separation, and the product yield...

Embodiment 3

[0023] Example 3: (1) Take 1 kg of agarwood and grind it to a fineness of 20 mesh, soak it in 95% ethanol for 12 hours, and the mass ratio of agarwood to ethanol is 1:5;

[0024] (2) Filter the agarwood, take the ethanol soaking solution and evaporate it with a rotary evaporator to obtain the agarwood paste;

[0025] (3) Put the agarwood paste into a supercritical extraction kettle for extraction, one-stage separation, and the process parameters of the supercritical extraction operation are set as follows: extraction pressure 22Mpa, temperature 46°C, carbon dioxide fluid flow rate 3L / h, separation pressure 8Mpa , the separation temperature is 40°C, the extraction time is 2h, and the agarwood essential oil is collected.

[0026] The product yield weight percent of agarwood essential oil is 3.83%.

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PUM

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Abstract

The invention discloses a process for extracting eaglewood essential oil by using supercritical carbon dioxide. The process comprises the following steps: crushing eaglewood and soaking into 95 percent of ethanol for 12 hours, wherein the mass ratio of the eaglewood to the ethanol is 1:5; filtering the eaglewood and rotationally evaporating the ethanol soaking liquid by using a rotary evaporator to obtain eaglewood cream; placing the eaglewood cream into a supercritical extraction kettle, extracting and performing one-stage separation to obtain the eaglewood essential oil, wherein the extraction pressure is 21 to 25 MPa, the extraction temperature is 45 to 47 DEG C, the flow of the carbon dioxide fluid is 2 to 6 L / h, the separation pressure is 8 MPa and the separation temperature is 40 DEG C. The process has the advantages of high extraction ratio of the eaglewood essential oil, short time, low equipment cost, safe production process and simple process, and is applicable to extraction of the eaglewood essential oil.

Description

technical field [0001] The invention relates to the technical field of agarwood essential oil extraction technology. Background technique [0002] Agarwood is a resinous wood of the white wood of the Daphneaceae plant. Agarwood volatile oil is the main component of the volatile medicinal effect of agarwood, referred to as agarwood essential oil. As a precious medicinal material, agarwood has the functions of lowering qi, warming the middle, warming the kidney and helping yang; it is mainly used to treat chest and abdominal distension and pain, stomach cold, vomiting, hiccups, kidney deficiency and qi reversal Asthma and other symptoms. Because of its unique fragrance, agarwood is also used in the preparation of spices and perfumes. The current extraction methods of agarwood are as follows. Steam distillation is a common method for extracting volatile oil from agarwood. The active ingredients are easily destroyed and volatilized, and it takes a long time. There are also ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
Inventor 黄进坚赵国斌都丹岑琳
Owner 大连卓尔高科技有限公司
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