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Dewaxing method of rice oil

A rice oil and dewaxing technology, which is applied in the fields of edible oil/fat, fat oil/fat refining, and recovery/refining of fatty substances, etc. It can solve the problems of high energy consumption, long production cycle, and large equipment investment in the dewaxing process. Achieve the effects of good dewaxing effect, stable quality and low equipment investment

Inactive Publication Date: 2014-01-08
劲旺粮油食品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lower temperature, the viscosity of the oil increases, which increases the resistance and increases the oil consumption during dewaxing. Therefore, the dewaxing process is carried out from 8°C to 15°C. Obviously, the traditional dewaxing process has high energy consumption and a long production cycle. , large investment in equipment

Method used

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  • Dewaxing method of rice oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The squeezed or solvent-leached rice oil is filtered to remove suspended impurities, and then the rice oil after conventional degumming, physical deacidification, decolorization and deodorization is heated to 80°C, and then transported to a 25-meter high-level crystallization tank (First heating and then transporting, so that the viscosity of the oil is small and the fluidity is good), start to cool down, gradually reduce the oil temperature from 80°C to 15°C, and control the cooling rate at 5°C / hour, and keep it at 15°C for 25 hours to make The waxy crystals in the edible rice oil are precipitated; the rice oil containing waxy crystals is then used in a crystallization tank to increase the natural pressure difference generated, and the flow rate is controlled to maintain a laminar flow state, and then transported to the wax oil separator to maintain the filter screen. The gap is 5cm, the pore of the stainless steel filter is 1500 mesh, and the pressure is controlled at 2...

Embodiment 2

[0023] The squeezed or solvent-leached rice oil is filtered to remove suspended impurities, and then the rice oil after degumming, physical deacidification, decolorization, and deodorization is heated to 60°C and transported to a 20-meter high-level crystallization tank. Cool down, the oil temperature is gradually reduced from 60°C to 10°C, the cooling rate is controlled at 6°C / hour, and kept at 10°C for 20 hours, so that the waxy crystals in the rice oil will precipitate; then the rice oil containing waxy crystals Use the crystallization tank to increase the natural pressure difference, control the flow rate to keep it in a laminar flow state, and transport it to the wax oil separator to keep the gap between the filters at 3cm. The pores of the stainless steel filter are selected to be 500 meshes and the pressure is controlled at 1.5kg / cm 2 , 10℃ heat preservation, keep the naturally formed wax and oil structure undamaged, filter, the wax content in the separated oil is 4.0 ppm...

Embodiment 3

[0025] The squeezed or solvent-leached rice oil is filtered to remove suspended impurities, and then the rice oil after degumming, physical deacidification, decolorization and deodorization is heated to 50°C and transported to a 15-meter high-level crystallization tank. Cooling down, the oil temperature is gradually reduced from 50°C to 13°C, and the cooling rate is controlled at 4°C / hour, and kept at 13°C for 18 hours to make the waxy crystals in the rice oil precipitate; then the rice containing waxy crystals The oil uses the crystallization tank to increase the natural pressure difference, controls the flow rate to keep it in a laminar state, and transports it to the wax oil separator, keeping the gap between the filters at 4cm. The pores of the stainless steel filter are selected to be 300 meshes, and the pressure is controlled. At 1.0kg / cm 2 , Keep the temperature at 15°C, keep the naturally formed wax and oil structure not damaged, filter, the wax content in the separated ...

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Abstract

The invention relates to a dewaxing method of rice oil, which belongs to the technical field of processing of edible oil. The dewaxing method of the rice oil comprises the steps of: (1) heating the rice oil to be dewaxed to be at 50-80 DEG C, inputting to a crystallization tank to be cooled to be at 10-15 DEG C at 3-6 DEG C / h and maintaining the temperature for 18-25 hours, and seeding out wax in the rice oil; and (2) conveying products obtained from the step (1) at a flow rate capable of maintaining laminar condition to a wax and oil separator which is 15-25 meters lower than the crystallization tank, and filtering by a plurality of 300-1500 mesh filter screens at the pressure of 1-3kg / cm<2> and the temperature of 10-15 DEG C so that oil filtered is the rice oil without wax. According to the method provided by the invention, in the process is simple, parameters can be controlled easily, the equipment investment is low, and the dewaxing effect is excellent so that the method is applicable for dewaxing of other edible plant oil within a wide application range.

Description

technical field [0001] The invention relates to the technical field of edible oil processing, in particular to a method for dewaxing rice oil. Background technique [0002] Edible rice oil is a kind of grain oil extracted from rice bran, a by-product of rice processing. The composition of fatty acids is reasonable. The content of linoleic acid in edible rice bran oil is about 38%, and the content of oleic acid is about 42%. The ratio is close to 1:1, which is in line with international health standards. The organization recommends a ratio of 1:1 for oleic acid and linoleic acid. Edible rice bran oil is also rich in oryzanol, vitamin E, squalene and phytosterols, among which the contents of oryzanol and vitamin E are 100-150 mg / 100g and 91-168 mg / 100 g respectively, and the content of squalene is also Above 300 mg / 100 g. Oryzanol has the functions of anti-oxidation, lowering blood fat, and lowering serum cholesterol. It also has a good effect on periodic nervous diseases, v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B3/00C11B11/00A23D9/04
Inventor 李从军吴雪辉杨公明
Owner 劲旺粮油食品有限公司
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