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Super critical corbon dioxide extraction vegetable seed oil and its product

A carbon dioxide, supercritical technology, applied in the production of fat/fat, fat production, etc., can solve the problem of not extracting conjugated unsaturated fatty acid oils, etc., and achieve the effect of reducing oxidative deterioration, high oil yield, and preventing product deterioration.

Inactive Publication Date: 2003-04-30
内蒙古宇航人高技术产业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method of extracting oil from plant seeds by supercritical carbon dioxide extraction has been reported, they are not extracting oil from the seeds of pumpkin, zucchini and pomegranate, especially their goal is not to extract oils containing conjugated unsaturated fatty acids

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: After the pomegranate seeds are dried, the water content is 15%. After crushing and sieving, 50-90 mesh pomegranate seed endosperm and seed shell are sieved again. This example does not separate the shell skin. Then fill them together into the extraction tank of the supercritical carbon dioxide extraction system, and the filling factor is 90%. The supercritical carbon dioxide with a temperature of 32°C and a pressure of 35Mpa enters the extraction tank from the bottom. After 2 hours of extraction, the pomegranate seed oil was separated into an open plastic tank in a separation tank with a temperature of 45° C. and a pressure of 15 MPa. The obtained pomegranate seed oil is very light reddish yellow, with a refractive index of 1.518 at 25°C, a melting point of 13°C, an acid value of 1.1mgKOH / g oil, and an iodine value of 170mgI 2 / g oil, unsaponifiable matter 0.7%, saponification value 189.9mgKOH / g oil, saturated fatty acid is 39%, unsaturated fatty acid ...

Embodiment 2

[0015] Embodiment 2: After the pumpkin seeds are dried in the sun, the water content is 13%, after being crushed and sieved, the endosperm and the shell of the pumpkin seeds of 50-90 meshes are sieved. The shell skin is separated, and then filled into the extraction tank of the supercritical carbon dioxide extraction system, and the filling factor is 90%. The supercritical carbon dioxide with a temperature of 35°C and a pressure of 35Mpa enters the extraction tank from the bottom. After 2 hours of extraction, the pumpkin seed oil was separated into an open plastic tank in a separation tank with a temperature of 44° C. and a pressure of 15 MPa. The obtained pumpkin seed oil is very light yellow, with a refractive index of 1.503 at 25°C, a melting point of 15°C, an acid value of 0.6mgKOH / g oil, and an iodine value of 168mgI 2 / g oil, unsaponifiable matter 0.9%, saponification value 215.2mgKOH / g oil, saturated fatty acid is 35%, unsaturated fatty acid is 60%, wherein conjugated ...

Embodiment 3

[0016] Embodiment 3: After the zucchini seeds are dried in the sun, the water content is 15%, after crushing and sieving, the zucchini seed endosperm and seed shell of 50-90 meshes are sieved. The shell skin is separated, and then filled into the extraction tank of the supercritical carbon dioxide extraction system, and the filling factor is 90%. The supercritical carbon dioxide with a temperature of 32°C and a pressure of 33Mpa enters the extraction tank from the bottom. After 2 hours of extraction, the zucchini seed oil was separated into an open plastic tank in a separation tank with a temperature of 42° C. and a pressure of 15 MPa. The obtained zucchini seed oil is very light yellow, with a refractive index of 1.483 at 25°C, a melting point of 12°C, an acid value of 0.8mgKOH / g oil, and an iodine value of 181mgI 2 / g oil, unsaponifiable matter 1.6%, saponification value 220.0mgKOH / g oil, saturated fatty acid is 25%, unsaturated fatty acid is 66%, wherein conjugated unsatur...

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Abstract

A process for extracting oil from plant seeds features that the supercritical CO2 fluid is used to extract the oil containing conjugated unsaturated fatty acid from the seeds of pumpkin, summer squash and pomegranate at low temp lower than 50 deg.C and 40 MPa. Its advantages are no damage to conjugated unsaturated fatty acid, high output rate and no toxic by-effect.

Description

technical field [0001] The invention relates to a method for extracting vegetable oil, in particular to a method for extracting oil containing conjugated unsaturated fatty acids from pumpkin seeds, zucchini seeds and pomegranate seeds with supercritical carbon dioxide and the oil. Background technique [0002] Conjugated unsaturated fatty acids have many special health functions for human physiological activities, such as anti-cancer, promoting growth, lowering blood lipids, and reducing fat accumulation. However, unsaturated fatty acid oils are easily oxidized and deteriorated, especially under heat conditions, which is more prominent for conjugated unsaturated fatty acid oils. There are many kinds of natural products rich in conjugated unsaturated fatty acid oils, for example, the endosperm of seeds of pumpkin, zucchini and pomegranate is rich in conjugated unsaturated fatty acid oils. The methods of extracting oil from plant seeds include pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10
Inventor 邢国良王尚义于晓辉
Owner 内蒙古宇航人高技术产业有限责任公司
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