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Method of extracting safflower oil using super-critical carbon dioxide

A carbon dioxide, safflower seed oil technology, applied in the direction of fat oil/fat production, fat production, etc., to achieve the effect of fast extraction and high purity

Active Publication Date: 2007-02-14
山西华卫药业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no method for extracting safflower seed oil with supercritical carbon dioxide in practical application

Method used

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  • Method of extracting safflower oil using super-critical carbon dioxide

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Effect test

Embodiment 1

[0022] Embodiment 1: Take 50 grams of safflower seeds, grind them to an average particle size of 0.4 mm, put them in an extraction tank after drying and seal them. Open the gas tank, carbon dioxide reaches the extraction tank through the condensation tank and high-pressure pump, and extracts at 28MPa, 50°C, and a flow rate of 4.5L / h; the extract enters the primary separation tank, and performs primary separation at 10MPa, 45°C to obtain yellow Transparent safflower oil; carbon dioxide continues to enter the secondary separation tank, and a little water and safflower oil are separated in the secondary separation tank at 6MPa and 40°C. The carbon dioxide separated from the separation tank returns to the condensation tank. After 2 hours of dynamic operation, 12.22 grams of safflower seed oil was obtained from the separation tank, with an extraction rate of 24.4%, accounting for 90.5% of the oil content. The content of linoleic acid in the obtained oil was 85.6%.

Embodiment 2

[0023] Embodiment 2: Take 50 grams of safflower seeds, grind them to an average particle size of 0.4 mm, put them in an extraction tank after drying and seal them. Open the gas tank, carbon dioxide reaches the extraction tank through the condensation tank and high-pressure pump, and extracts at 24MPa, 45°C, and a flow rate of 4.5L / h; the extract enters the primary separation tank, and performs primary separation at 10MPa, 50°C to obtain yellow Transparent safflower seed oil; carbon dioxide continues to enter the secondary separation tank, and a little water and safflower seed oil are separated in the secondary separation tank at 5MPa and 30°C. The carbon dioxide separated from the separation tank returns to the condensation tank. After 2 hours of dynamic operation, 11.9 grams of safflower seed oil was obtained from the separation tank, with an extraction rate of 23.8%, accounting for 88.2% of the oil content. The content of linoleic acid in the obtained oil was 84.9%.

Embodiment 3

[0024] Embodiment 3: Take 50 grams of safflower seeds, grind them to an average particle size of 0.5 mm, put them in an extraction tank after drying and seal them. Open the gas tank, carbon dioxide reaches the extraction tank through the condensation tank and high-pressure pump, and extracts at 20MPa, 35°C, and a flow rate of 4.5L / h; the extract enters the primary separation tank, and performs primary separation at 12MPa, 35°C to obtain yellow Transparent safflower oil; carbon dioxide continues to enter the secondary separation tank, and a little water and safflower oil are separated in the secondary separation tank at 6MPa and 35°C. The carbon dioxide separated from the separation tank returns to the condensation tank. After 2 hours of dynamic operation, 7.1 grams of safflower seed oil was obtained from the separation tank, with an extraction rate of 14.2%, accounting for 52.6% of the oil content. The content of linoleic acid in the obtained oil was 84.8%.

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Abstract

The invention is a method for extracting safflower seed oil by supercritical CO2, putting 0.3-0.5mm-sized crushed safflower seeds in the extracting cylinder of a supercritical extractor, and using supercritical CO2 as extractant to make extraction at 20-28MPa and 35-60DEG C; separating after extraction, where primary separation pressure and temperature are 9-14MPa and 35-50DEG C, respectively, and the corresponding product is safflower seed oil; secondary separation pressure and temperature are 5-8MPa and 30-40DEG C, respectively, and the corresponding products are water and safflower seed oil. And it has high extracting speed, the safflower seed oil product has no extractant remaining and has high purity, and the unsaturated fatty acid content can reach above 90%, where the linoleic acid content is about 85%.

Description

technical field [0001] The invention relates to a method for extracting safflower seed oil, in particular to a method for extracting linoleic acid-based oil from safflower seeds by using carbon dioxide fluid in a supercritical state as an extractant. Background technique [0002] Safflower seeds are the seeds of Compositae safflower. The cultivated area of ​​safflower in my country is 30,000 to 40,000 hectares, mainly concentrated in Xinjiang, followed by Sichuan, Yunnan and other provinces. Safflower seed oil is a vegetable oil extracted from safflower seeds. Its linoleic acid content is the highest among all vegetable oils, and it also contains active substances such as flavonoids and vitamin E. Linoleic acid is the only fatty acid that is necessary for the human body but cannot be synthesized in the body itself. It is an essential factor for maintaining brain and nerve functions. Long-term consumption of linoleic acid can soften blood vessels, reduce the absorption of ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10
Inventor 毕继诚韩小金张荣王江泉
Owner 山西华卫药业有限公司
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