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Rice bran oil degreasing method by adding crystal nucleuses

A technology of rice bran oil and crystal nucleus, which is applied in the degreasing field of rice bran oil plus crystal nucleus, can solve the problems of affecting oil yield, filtration process failure, and affecting the quality of finished oil, so as to achieve purer and more fragrant taste, improve appearance and color, reduce The effect of equipment investment

Inactive Publication Date: 2015-03-25
HUNAN DONGXIANG GREASE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Rice bran oil has a lot of fat. Generally, dewaxed oil can be degreased without adding crystal nuclei, frozen and crystallized, and can be degreased and filtered. When the crystal nucleus is filtered, the crystal grains are soft, and the filtering speed should not be too fast, otherwise the oil passage will be blocked, making the oil filtering speed slower. When the oil filtering speed is too slow, the filtered oil cannot be taken away in time to transfer heat from the filter frame The heat of the oil will make the frozen fat in the frame turn into oil and filter out, which will affect the quality of the finished oil and even cause the filtration process to fail; if diatomaceous earth is added after crystallization, the filtration speed can be accelerated, but the smell of some deodorized oil cannot be removed , also because the addition of diatomaceous earth affects the yield of oil

Method used

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  • Rice bran oil degreasing method by adding crystal nucleuses
  • Rice bran oil degreasing method by adding crystal nucleuses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Under the experimental conditions, take 500 grams of dewaxed oil (yellow 35 red 6), add 2.5 grams (0.5% of the oil) of activated carbon at 30 ° C and stir evenly, and slowly cool down to 4 ° C within 24 hours (by 1 hour in the refrigerator) ℃), and kept at 4 ℃ for 10 hours to grow crystals, and then took out the sample and filtered it with filter paper in a refrigerator at 4 ℃, and took the filtered clear oil for 0 ℃ test, and it could not be frozen for 8 hours, and the color (yellow 35, red 5), the gas taste is purer than crude oil, without the earthy smell of deodorized oil, and the blue value does not increase in the 280°C heating test.

Embodiment 2

[0015] Concrete production process steps of the present invention are as follows:

[0016] ① Wait for the dewaxed oil to warm up. Use the oil that is first dewaxed and then deesterified, when the temperature in the crystallization tank drops to 35°C.

[0017] ② Add 0.3% of the oil to the premixing tank (activated carbon is purchased from wood activated carbon from a factory in Hunan, weight loss on drying ≤ 10%; chloride ≤ 0.2; heavy metal ≤ 0.01%; acidity and alkalinity (pH value) 2.0-5.0 ; particle size 180-200 mesh; caramel decolorization greater than or equal to 100%; iron salt ≤ 0.1%; in line with GB / T13803.3-1999 standard.), then add half a ton of oil, and stir evenly with a circulating pump + agitator, Pump into the crystallization tank and stir evenly.

[0018] ③ Continue to cool down, keep the cooling rate at 1°C / hour, and the final temperature is 3°C.

[0019] ④ Keep the oil temperature at 3°C ​​and grow crystals for 24 hours.

[0020] ⑤ Filter. Filtrate with tw...

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Abstract

The invention discloses a rice bran oil degreasing method by adding crystal nucleuses. The method is mainly characterized in that a production process that activated carbon is used as the crystal nucleuses to remove rice bran grease is adopted. Investment on devices is reduced, the appearance color of oil is improved, the oil flavor is increased, and oil quality is improved.

Description

technical field [0001] The invention relates to a method for degreasing rice bran oil with crystal nuclei. Background technique [0002] Rice bran oil has a lot of fat. Generally, dewaxed oil can be degreased without adding crystal nuclei, frozen and crystallized, and can be degreased and filtered. When the crystal nucleus is filtered, the crystal grains are soft, and the filtering speed should not be too fast, otherwise the oil passage will be blocked, making the oil filtering speed slower. When the oil filtering speed is too slow, the filtered oil cannot be taken away in time to transfer heat from the filter frame The heat of the oil will make the frozen fat in the frame turn into oil and filter out, which will affect the quality of the finished oil and even cause the filtration process to fail; if diatomaceous earth is added after crystallization, the filtration speed can be accelerated, but the smell of some deodorized oil cannot be removed , Also due to the addition of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/10C11B3/16
CPCC11B3/001C11B3/008C11B3/10
Inventor 朱旭东
Owner HUNAN DONGXIANG GREASE
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