Ultrasonic-assisted method for extracting flax-seed oil

A linseed oil and ultrasonic technology, applied in the production of fat oil/fat and fat production, can solve the problems that have not yet been found, and achieve the effects of avoiding oxidative deterioration, saving oil resources and simple process

Inactive Publication Date: 2008-06-25
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It has been more than 20 years to use ultrasound as an auxiliary method to extract the active ingredients of plants, but no one has been found to use it to assist in the extraction of linseed oil.

Method used

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  • Ultrasonic-assisted method for extracting flax-seed oil
  • Ultrasonic-assisted method for extracting flax-seed oil
  • Ultrasonic-assisted method for extracting flax-seed oil

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The extraction and analysis of embodiment 1, linseed oil

[0037] Get 60g linseed (Hebei Zhangjiakou Liangyou Oil Food Co., Ltd.), randomly divided into 6 parts, each 10g, wherein 3 parts adopt the ultrasonic auxiliary solvent method of the present invention to extract linseed oil respectively; Extraction of linseed oil by solvent extraction. The specific extraction method and results are as follows:

[0038] 1. Ultrasonic-assisted solvent extraction of linseed oil

[0039] 1) Grinding of linseed: 10 g of linseed is put into a grinder and crushed to a particle size of 0.25-1.20 mm.

[0040] 2) Mix the crushed flaxseed with 40ml of n-hexane, at ultrasonic frequency 20kHz, ultrasonic intensity 1W / cm 2 , under the condition that the extraction temperature is 20° C., ultrasonic-assisted extraction is performed on the mixture for 30 minutes.

[0041] 3) Collect the extract by filtration.

[0042] 4) Place the extract in a rotary evaporator at 50° C. and concentrate unde...

Embodiment 2

[0061] The extraction and analysis of embodiment 2, linseed oil

[0062] Get 60g linseed (Hebei Zhangjiakou Liangyou Oil Food Co., Ltd.), randomly divided into 6 parts, each 10g, wherein 3 parts adopt the ultrasonic auxiliary solvent method of the present invention to extract linseed oil respectively; Extraction of linseed oil by solvent extraction. The specific extraction method and results are as follows:

[0063] 1. Ultrasonic-assisted solvent extraction of linseed oil

[0064] 1) Grinding of linseed: 10 g of linseed is put into a grinder and crushed to a particle size of 0.25-1.20 mm.

[0065] 2) Mix the crushed flaxseed with 60ml petroleum ether, at ultrasonic frequency 20kHz, ultrasonic intensity 5W / cm 2 , under the condition that the extraction temperature is 25° C., ultrasonic-assisted extraction is performed on the mixture for 30 minutes.

[0066] 3) Collect the extract by filtration.

[0067] 4) Put the extract in a rotary evaporator at 45° C. and concentrate un...

Embodiment 3

[0096] The extraction and analysis of embodiment 3, linseed oil

[0097] Get 60g linseed (Hebei Zhangjiakou Liangyou Oil Food Co., Ltd.), randomly divided into 6 parts, each 10g, wherein 3 parts adopt the ultrasonic auxiliary solvent method of the present invention to extract linseed oil respectively; Extraction of linseed oil by solvent extraction. The specific extraction method and results are as follows:

[0098] 1. Ultrasonic-assisted solvent extraction of linseed oil

[0099] 1) Grinding of linseed: 10 g of linseed is put into a grinder and crushed to a particle size of 0.25-1.20 mm.

[0100] 2) Mix the crushed flaxseed with 80ml of n-hexane, at ultrasonic frequency 30kHz, ultrasonic intensity 10W / cm 2 , under the condition that the extraction temperature is 35° C., ultrasonic-assisted extraction is performed on the mixture for 60 minutes.

[0101] 3) Collect the extract by filtration.

[0102] 4) Place the extract in a rotary evaporator at 50° C. and concentrate und...

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Abstract

The invention discloses a method for extracting linseed oil, in particular a method for extracting linseed oil assisted by ultrasonic. The invention takes linseeds as the raw material, the solvent is used to extract the linseed oil under the ultrasonic that the frequency is between 20 and 100 kHz and the strength is between 1 and 40W/cm<2>. With the method of the invention, the extraction rate of the linseed oil is between 70.74 and 99.36 percent, the extraction time is between 30 and 180 minutes, the dosage of the solvent is 4 to 20L per 1kg linseeds, the extraction temperature is between 20 and 60 DEG C. Compared with a pressing method, a solvent method and a supercritical carbon dioxide extraction method, the process provided by the invention has the characteristics of simple equipment, convenient operation, low cost, quick speed and high yield.

Description

technical field [0001] The invention belongs to the technical field of plant active ingredient extraction technology, and relates to a method for ultrasonically assisted extraction of linseed oil. Background technique [0002] Flax (Linaceae Flax) is an annual or perennial herb plant, one of the top ten oil crops in the world, and is widely planted in Northwest my country, North China and Northeast China. Flaxseed (flaxseed orlinseed), also known as flaxseed, is the seed of flax, and the oil obtained from flaxseed is called linseed oil. The unsaturated fatty acid content in linseed oil is more than 80%, and the linolenic acid content is 40%-60%, which is 5-100 times that of other vegetable oils. Linolenic acid is a kind of omega-3 unsaturated fatty acid. This kind of unsaturated fatty acid cannot be synthesized by humans and must be obtained from food or nutrition. Therefore, this type of unsaturated fatty acid is also called "human essential fatty acid (EFA)". After linol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10
Inventor 李栋张振山汪立君毛志怀
Owner CHINA AGRI UNIV
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