Supercritical carbon dioxide extraction process for extracting microbe oil

A microbial oil and carbon dioxide technology, applied in biochemical equipment and methods, microorganisms, microorganisms, etc., can solve the problems of unstable chemical properties of long-chain polyunsaturated fatty acids, long production cycle, and high risk, and achieve simple solvent recovery. Convenience, strong penetration, good product quality

Inactive Publication Date: 2006-10-11
MASSON GROUP
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  • Abstract
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  • Claims
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Problems solved by technology

Due to the unstable chemical properties of long-chain polyunsaturated fatty acids, the products of such oils extracted by traditional methods have other quality indicators such as peroxide value, odor and color.
In addition, chemical solvents are used as solvents, and the solvent residues of the extracted products are inevitable. Therefore, the solvent extraction method also has problems such as high production risk, long production cycle, and high energy consumption.

Method used

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  • Supercritical carbon dioxide extraction process for extracting microbe oil

Examples

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Effect test

Embodiment 1

[0058] Using a supercritical CO2 extraction device with an extraction kettle of 1L, put 300g of DHAGOLD seaweed raw material containing 37.9% oil into the extraction kettle for supercritical carbon dioxide extraction: the extraction pressure is 32MPa, the extraction temperature is 55°C, and the analytical pressure is 6.5MPa , the analysis temperature is 45°C, and the total extraction time after reaching the extraction pressure is 11 hours. 63.9 g of seaweed oil was co-extracted from the analysis kettle. The calculated total yield was 21.3%.

Embodiment 2

[0060] Using a supercritical CO2 extraction device with an extraction kettle of 1L, put 300g of DHAGOLD seaweed raw material containing 37.9% oil into the extraction kettle for supercritical carbon dioxide extraction: the extraction pressure is 15MPa, the extraction temperature is 45°C, and the analytical pressure is 5MPa. The analysis temperature was 35°C, and the total extraction time after reaching the extraction pressure was 8 hours. 49.8 g of seaweed oil was co-extracted from the analysis kettle. The calculated total yield was 16.6%.

Embodiment 3

[0062] Using a supercritical CO2 extraction device with an extraction kettle of 24L, put 6500g of DHAGOLD seaweed raw materials containing 37.9% oil into the extraction kettle for supercritical carbon dioxide extraction: the extraction pressure is 25MPa, the extraction temperature is 53°C, and the analytical pressure is 7MPa. The analysis temperature was 35°C, and the total extraction time after reaching the extraction pressure was 12 hours. 1339g of seaweed oil was co-extracted from the analysis kettle. The calculated total yield was 20.6%.

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Abstract

The invention relates to an extraction method of supercritical carbon dioxide extraction of microbial oil. The present invention uses inactivated microbial cells produced by fermentation as raw materials, adopts the method of supercritical carbon dioxide extraction, first extracts and then analyzes to obtain microbial oil, or adopts supercritical carbon dioxide extraction and implements one or more pressure mutations during the extraction process method to extract the microbial oil. The oil extracted by the present invention has good quality, high yield, and no solvent residue; less production steps, short cycle, low energy consumption, and no environmental pollution; and does not destroy other effective nutrients of its by-product microbial low-fat thallus and its Applications in food, feed and other industries.

Description

technical field [0001] The invention relates to an extraction method for supercritical carbon dioxide extraction of microbial oil containing long-chain polyunsaturated fatty acids (PUFA) required for human growth and health maintenance. Background technique [0002] Long-chain polyunsaturated fatty acids are closely related to human nutrition, and essential fatty acids are essential fatty acids for normal growth and development and maintenance of health. Since humans lack the ability to synthesize double bonds at Omega3 and Omega6 positions, they can only be obtained from diet. Omega3 precursor linolenic acid and Omega6 precursor linoleic acid are called essential fatty acids (EFA). Docosahexaenoic acid (DHA) and arachidonic acid (AA) are long-chain polyunsaturated fatty acids contained in the human body. The essential fatty acids linoleic acid and linolenic acid are the precursors for the synthesis of AA and DHA respectively. It can be synthesized by the action of desatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/10C12N1/00
Inventor 龚春晖胡燿昌金波姚煜东刘汉槎
Owner MASSON GROUP
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