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Rapeseed oil squeezing process

A rapeseed oil and process technology, applied in the direction of fat oil/fat production, fat oil/fat refining, fat production, etc., can solve the problem of rapeseed residue residue and achieve a good effect of impurity removal

Pending Publication Date: 2020-08-14
岳阳长康绿态福海油脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing rapeseed oil is fried and then squeezed, or extracted with organic solvents, or supercritical extraction, etc., all of which have different degrees of residual rapeseed residues.

Method used

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  • Rapeseed oil squeezing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 Shown, a kind of rapeseed oil pressing process comprises the steps:

[0037] S1. Clean the rapeseed and dry it to a water content of 5%;

[0038] S2. Freezing for 15 hours, the temperature of the cold storage is -25°C, and then drying, the drying time is 4 hours, the temperature is set at 50°C, and the above freezing and drying process is repeated 3 times;

[0039] S3, the rapeseed is heated to 6 maturity by microwave heating;

[0040] S4. Squeeze 6 mature rapeseeds, filter and remove impurities, and obtain first-grade rapeseed oil;

[0041] S5. Add water equivalent to 20% of the oil weight to the first-grade rapeseed oil, heat to 50°C, and then stir, the stirring speed is set to 100r / min, and the stirring time is set to 30 minutes, so that the oil and water are separated to obtain the second-grade rapeseed oil. rapeseed oil;

[0042] S6, refrigerating the second-grade rapeseed oil at a temperature of -3°C for 4 hours, and then using an impurity rem...

Embodiment 2

[0045] Such as figure 1 Shown, a kind of rapeseed oil pressing process comprises the steps:

[0046] S1. Cleaning the rapeseed and drying it to a water content of 8%;

[0047] S2. Freezing for 20 hours, the temperature of the cold storage is -20°C, and then drying, the drying time is 6 hours, the temperature is set at 60°C, and the above freezing and drying process is repeated 3 times;

[0048] S3, the rapeseed is heated to 7 mature by microwave heating;

[0049] S4. Squeeze 7 mature rapeseeds, filter and remove impurities, and obtain first-grade rapeseed oil;

[0050] S5. Add water equivalent to 30% of the oil weight to the first-grade rapeseed oil, heat to 65°C, and then stir, the stirring speed is set to 155r / min, and the stirring time is set to 40 minutes, so that the oil and water are separated to obtain the second-grade rapeseed oil. rapeseed oil;

[0051] S6, refrigerating the second-grade rapeseed oil at a temperature of -5°C for 5 hours, and then using an impurity...

Embodiment 3

[0054] Such as figure 1 Shown, a kind of rapeseed oil pressing process comprises the steps:

[0055] S1. Clean the rapeseed and dry it until the water content is 6%;

[0056] S2. Freeze for 18 hours, the temperature of the cold storage is -22°C, and then dry, the drying time is 5 hours, the temperature is set at 55°C, and the above freezing and drying process is repeated 3 times;

[0057] S3, the rapeseed is heated to 6 maturity by microwave heating;

[0058] S4. Squeeze 6 mature rapeseeds, filter and remove impurities, and obtain first-grade rapeseed oil;

[0059] S5. Add water equivalent to 25% of the oil weight to the first-grade rapeseed oil, heat to 60°C, and then stir, the stirring speed is set to 120r / min, and the stirring time is set to 35 minutes, so that the oil and water are separated to obtain the second-grade rapeseed oil. rapeseed oil;

[0060] S6, refrigerating the second-grade rapeseed oil at a temperature of -4°C for 4.5 hours, and then using an impurity r...

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Abstract

The invention discloses a rapeseed oil squeezing process which comprises the following steps: S1, cleaning rapeseeds, and drying the rapeseeds until the water content is 5-8%, S2, carrying out freezing at the temperature of a refrigeration house from -25 DEG C to -20 DEG C for 15-20 hours, and then drying at a temperature of 50 DEG C to 60 DEG C for 4 hours to 6 hours at least three times, S3, heating the rapeseeds until the rapeseeds are 60-70% mature, S4, squeezing 60-70% mature rapeseeds, and filtering and removing impurities to obtain first-grade rapeseed oil, S5, adding water which accounts for 20-30% of the weight of the oil into the first-grade rapeseed oil, heating to 50-65 DEG C, and then stirring to separate oil from water, so as to obtain second-grade rapeseed oil, S6, refrigerating the secondary rapeseed oil for 4-5 hours at the temperature of -3 DEG C to -5 DEG C, and then removing impurities by an impurity removing device so that tertiary rapeseed oil is obtained, and S7,carrying out decolorization treatment on the third-grade rapeseed oil to obtain clean rapeseed oil. Compared with the prior art, the rapeseed oil squeezing process provided by the invention can achieve a good impurity removal effect.

Description

technical field [0001] The invention relates to a pressing process, in particular to a rapeseed oil pressing process. Background technique [0002] Rapeseed oil, commonly known as rapeseed oil, is also called coriander oil. It is a transparent or translucent liquid obtained by pressing rapeseed. It is one of the main edible oils in my country. It is mainly produced in the Yangtze River Basin, Southwest, Northwest and other places. The world's first, the human body has a high absorption rate of rapeseed oil, which can reach 99%. Therefore, the unsaturated fatty acids such as linoleic acid and vitamin E and other nutrients contained in it can be well absorbed by the body, and have certain effects of softening blood vessels and delaying aging. The existing rapeseed oil is fried and then squeezed, or extracted with an organic solvent, or supercritically extracted, all of which have different degrees of residual rapeseed residue. In view of this, the inventor of the present appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/06C11B3/00
CPCC11B1/04C11B1/06C11B3/001
Inventor 谭迪武
Owner 岳阳长康绿态福海油脂有限公司