Method for preparing oil at low temperature

A low-temperature, oil-based technology, applied in the field of low-temperature production of oil and oil, and oil extraction from oil plants, can solve the problems of long processing time, no method for low-temperature production and refining of oil, and high cost, and achieves low protein denaturation and effective amino acids. The effect of low loss and reduced fiber content

Inactive Publication Date: 2010-11-10
INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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  • Application Information

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Problems solved by technology

This technology is a physical refining method, in which degumming and deacidification are carried out at a lower temperature, but the processing time is too long, and lipase solution is used to clean the membrane at the same time, and the cost is high
[0008] Judging from the above oil plants, oil production and oil refining technologies, each has certain disadvantages, and it does not involve a complete low-temperature oil production and refining method

Method used

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  • Method for preparing oil at low temperature
  • Method for preparing oil at low temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 Shown, a kind of method for grease low temperature preparation, it comprises the steps:

[0050] 1) cleaning: use rapeseed as raw material to clean and remove impurities;

[0051] 2) conditioning: then drying the moisture of the rapeseed to 7wt%, and cooling the rapeseed to 50°C;

[0052] 3) Low-temperature pressing: use a rapeseed shelling separator to peel and separate the conditioned rapeseed, measure the peeling rate to 95%, and obtain rapeseed kernels; collect the rapeseed kernels, and use a screw press to squeeze them, and the temperature for pressing is 35 DEG C, the moisture content of the rapeseed kernel that goes into the press is 8wt%; Obtain rapeseed crude oil;

[0053] 4) Degumming: Centrifuge the crude rapeseed oil to remove the sediment, measure the acid value to 1.56mgKOH / g, then keep the temperature of the crude rapeseed oil at 30°C, add 0.5% of the crude rapeseed oil to the degummed solid for adsorption agent, the degumming time is ...

Embodiment 2

[0065] Such as figure 1 Shown, a kind of method for grease low temperature preparation, it comprises the steps:

[0066] 1) cleaning: using soybeans as raw materials to clean and remove impurities;

[0067] 2) conditioning: then dry the moisture of soybeans to 9wt%, and cool soybeans to 45°C;

[0068] 3) Low-temperature pressing: direct pressing with a screw press, the pressing temperature is 45°C, and the moisture content of soybeans is 9wt%; crude soybean oil is obtained;

[0069] 4) Degumming: Centrifuge the crude soybean oil to remove the sediment, measure the acid value to 2.05mgKOH / g, then keep the temperature of the crude soybean oil at 40°C, add a degumming solid adsorbent with a mass of 1.5% of the crude soybean oil, and process The time is 0.6h, followed by centrifugation to obtain degummed soybean oil, which is analyzed by heating test. The analysis result shows that there is no precipitate, and the yellow value and red value remain unchanged;

[0070] 5) Deacidi...

Embodiment 3

[0081] Such as figure 1 Shown, a kind of method for grease low temperature preparation, it comprises the steps:

[0082] 1) Cleaning: use camellia oleifera seed as raw material to clean and remove impurities,

[0083] 2) conditioning: then drying the moisture of the camellia oleifera seed to 7.5wt%, and cooling the camellia oleifera seed to 35°C;

[0084] 3) Low-temperature pressing: the camellia oleifera seed is shelled and separated by a camellia seed shelling separator, and the shelling rate is determined to be 90%; the camellia oleifera seed kernel is collected and pressed by a screw press. The temperature for pressing is 30° C., and the moisture content is 7.5wt%; Obtain tea seed crude oil;

[0085] 4) Degumming: Centrifuge the crude tea seed oil to remove the sediment, measure the acid value to 1.80mgKOH / g, then keep the temperature of the crude camellia seed oil at 30°C, add 1% degummed solid of the crude camellia seed oil for adsorption agent, the treatment time is ...

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Abstract

The invention relates to a method for preparing oil at low temperature, which is characterized by comprising the following steps of: 1) clearing: removing impurities of an oil material; 2) conditioning: adjusting the temperature and moisture of the oil material, wherein the temperature of the oil material after the conditioning is 5 to 65DEG C, and the moisture mass of the oil material is adjusted to 4-16 percent; 3) pressing at low temperature: pressing the conditioned oil material, wherein the pressing temperature of the oil material is -10 to 65DEG C, and the moisture mass of the pressed oil material is 4 to 16 percent, and obtaining crude oil; 4) degumming: keeping the temperature of the crude oil between 5 and 65DEG C, adding a degumming solid adsorbent accounting for 0.1 to 5 mass percent of the crude oil, and controlling the degumming time to between 0.1 and 2 hours; and 5) removing acid: keeping the temperature of the degummed crude oil to between 5 and 65DEG C, adding an acid removing solid adsorbent accounting for 0.1 to 2 mass percent of the degummed crude oil, and controlling the acid removing time to between 0.1 and 3 hours to obtain the oil. The method is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for extracting oil from oil plants, in particular to a method for preparing oil at low temperature, and belongs to the technical field of oil processing. Background technique [0002] At present, there are many methods for oil production, and the most widely used methods are pressing method and solvent extraction method. The existing main pressing processes are: cleaning, billet rolling, steaming and frying, and pre-pressing (pressing). Generally, the temperature of steaming, frying and pressing is above 100°C. The loss is large, and at the same time, the degree of protein denaturation of the cake is high, the loss of effective amino acids is large, and the color of the cake is deep. The solvent leaching method uses an organic solvent that can dissolve oil to extract the oil through the effects of wetting, penetration, and molecular diffusion. However, there is a problem of solvent residue in the leaching method, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/06C11B3/10C11B1/04
Inventor 黄凤洪刘昌盛杨湄黄庆德李文林邓乾春钮琰星郭萍梅杨金娥程晓英
Owner INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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