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Method for extracting omega 6 polyunsaturated fatty acid from plant seeds

A technology of unsaturated fatty acids and plant seeds, applied in the field of extraction of ω-6 polyunsaturated fatty acids, can solve the problems of low purity of ω-6 polyunsaturated fatty acids, high risk of operation, high degree of oxidation, etc., and achieve good social benefits , Good selectivity and high degreasing rate

Active Publication Date: 2006-05-24
吉林省长吉图开发建设现代农业投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for extracting omega-6 polyunsaturated fatty acids in plant seeds to solve the problems of low purity and high degree of oxidation of omega-6 polyunsaturated fatty acids in the traditional pressing method and the large operational risk and disadvantages of the organic solvent method. There are defects such as environmental problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a. Pretreatment, pretreatment when the by-product corn germ from corn starch factory or corn alcohol factory is used as raw material.

[0028] Soaking and washing: Corn germs from corn starch factories or corn alcohol factories have a strong pungent smell and dark yellow color, so they cannot be used directly. The corn germ should be soaked in drinking water at 20°C for 1-2 hours, and then gently rinsed with running water to remove residual starch, small particles of endosperm and fibers. The obtained wet corn germ is subjected to centrifugation and dehydration under the condition of rotating speed of 2800r / min., so that the water content is 25-30%, and then coarsely crushed, so that the particle size is 1mm-5mm.

[0029] b. Microwave wall breaking, drying, crushing

[0030] Microwave the pretreated corn germ for 2 minutes and then stop for 1 min to detect the water content of the corn germ. If the water content is higher than 8%, perform microwave oscillation once mor...

Embodiment 2

[0034] a. Pretreatment, using corn germs obtained by peeling and breaking corn kernels or corn germs as a by-product of grain processing plants as raw materials.

[0035] Cleaning, this kind of raw corn germ contains more impurities, starch, broken rice, etc., so it needs to be sieved to remove sand, metal, broken rice and small particles of impurities, and then the corn germ is obtained by winnowing.

[0036]Soak and wash in water, soak the corn germ in drinking water at 18°C ​​and stir evenly, the soaking time is 30min-40min. Rinse gently under running water to remove impurities such as starch and dust attached to it, and then carry out centrifugation and dehydration under the condition of a rotating speed of 2800r / min to make the water content 25-30%, and carry out coarse crushing. Its particle size is 1 mm to 5 mm.

[0037] b. Microwave wall breaking, drying, crushing

[0038] Microwave the pretreated corn germ for 3 minutes and then stop for 3 minutes to detect the wate...

Embodiment 3

[0042] a. Pretreatment

[0043] (1) Pretreatment when using corn germ, a by-product of corn starch factory or corn alcohol factory, as raw material

[0044] Soaking and washing: corn germ should be soaked in drinking water at 22°C for 1 hour to 2 hours, and then gently rinsed with running water to remove residual starch, small particles of endosperm and fibers. The obtained wet corn germ is subjected to centrifugation and dehydration under the condition of rotating speed of 2800r / min., so that the water content is 25-30%, and then coarsely crushed, so that the particle size is 1mm-5mm.

[0045] b. Microwave wall breaking, drying, crushing

[0046] Microwave the pretreated corn germ for 4 minutes and then stop for 5 minutes to detect the water content of the corn germ. If the water content is higher than 6%, perform microwave oscillation once more, and then detect the water content of the corn germ. When the water content is less than 6%, the microwave oscillation and drying ...

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Abstract

The invention relates to a method for extracting omega-6 polyunsaturated fatty acid from plant seeds, eliminating impurities from the plant seeds, properly preprocessing and then roughly crushing, making microwave vibration to break their walls and rapidly drying and finely crushing to make them into powder of a certain size, making supercritical CO2 fluid extraction on the made powder, selectively extracting, separating and purifying omega-6 polyunsaturated fatty acid in the raw material on proper conditions. The invention fully uses the raw material, and does not produce waste residues and waste steam and pollute the environment. The products have high physiological activity and excellent taste.

Description

technical field [0001] The invention belongs to the extraction method of omega-6 polyunsaturated fatty acid, especially refers to the extraction from plant seeds. Background technique [0002] In the molecule of cis polyunsaturated fatty acids, the double bond farthest from the carboxyl group is called omega-6 polyunsaturated fatty acids on the penultimate 6th carbon atom, among which linoleic acid, γ-linolenic acid, peanut Tetraenoic acid must be ingested from food because it cannot be synthesized by itself in the body. It is called essential fatty acid, especially linoleic acid, which is indispensable to the human body and cannot be converted by other fatty acids in the human body, while γ-linolenic acid and arachidonic acid are Acenoic acid can be obtained by conversion of linoleic acid in the human body. The human cell membrane controls electron transfer, regulates the entry of nutrients into cells and the discharge of intracellular waste, and fatty acids have a decisiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/42C07C57/12
CPCY02P20/54
Inventor 王大为张艳荣
Owner 吉林省长吉图开发建设现代农业投资有限公司
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