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DHA (docosahexaenoic acid) oil low-temperature refining method

A low-temperature refining, oil technology, applied in the direction of oil/fat refining, fat production, etc., can solve the problems of affecting the appearance of oil, cost of use, high temperature, and long time.

Inactive Publication Date: 2014-12-17
青岛海智源生命科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional DHA oil refining process, degumming is about 75-90 degrees Celsius, alkali refining is about 90 degrees Celsius, decolorization is about 110 degrees Celsius, and deodorization is 240 degrees Celsius for 2-4 hours. The high temperature and time-consuming refining process will be detrimental to the nutrition and flavor of DHA oils. influences
[0003] Because the whole process of traditional refining is carried out at a high temperature above 80 degrees Celsius, when the refined DHA oil is left at room temperature for a period of time, it will often appear slightly turbid. As the temperature decreases and the time prolongs, soapstock and water will accumulate and precipitate, making the oil cloudy and affecting the appearance and quality of the oil
[0004] Refined DHA oil by traditional technology is basically in a semi-solidified state during low-temperature storage. The reason is that the components with higher freezing points in the oil solidify with low temperature. When using it, a hot water bath is required to melt the oil, which affects the appearance of the oil and the cost of use.

Method used

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  • DHA (docosahexaenoic acid) oil low-temperature refining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] 1. Alkali refining and decolorization

[0011] 1. Take 1T of DHA crude oil, put it into a crude oil tank, heat the crude oil in a water bath at 25-55°C, add phosphoric acid solution and 2-3% oil-soluble soybean lecithin according to the oil weight 2-3‰, mix evenly, and stir for 20-50°C 30 minutes.

[0012] 2. Use ice water to cool the crude oil to 10°C. Add sodium hydroxide solution and stir rapidly for 30-40 minutes. When the oil-soap begins to separate, heat in a water bath and stir slowly. When the temperature of the oil rises to 55-75°C, stir for 20 minutes and stop, and let it settle.

[0013] 3. Wash with water according to 15% of the oil weight, let it settle for 2 hours to discharge waste water, and wash 5 times with water.

[0014] 4. Put the washed oil into the drying tank, dehydrate under vacuum condition, vacuum degree 0.09MPa, dehydrate at 70-85℃ for 30 minutes.

[0015] 5. Add an adsorbent with an oil weight of 10%, the decolorization temperature is 60-...

Embodiment 2

[0021] 1. Alkali refining and decolorization

[0022] 1. Take 1T of DHA crude oil, put it into the crude oil tank, heat the crude oil to 75-90°C in a water bath, add phosphoric acid solution and 2-3% oil-soluble soybean lecithin according to the oil weight 2-3‰, mix evenly, and stir for 20 ~30 minutes.

[0023] 2. Add sodium hydroxide solution and stir rapidly for 30-40 minutes. When the oil-soap begins to separate, heat in a water bath and stir slowly. When the oil temperature rises to 90°C, stir for 20 minutes and stop, and let it settle.

[0024] 3. Wash with water according to 15% of the oil weight, let it settle for 2 hours to release waste water, and wash 5 times with water.

[0025] 4. Put the washed oil into the drying tank, dehydrate under vacuum condition, vacuum degree 0.09MPa, dehydrate at 90°C for 30 minutes.

[0026] 5. Add an adsorbent with an oil weight of 10%, decolorize at 110°C, decolorize for 30 minutes, and filter with a plate and frame filter to obtain ...

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Abstract

The invention relates to a DHA (docosahexaenoic acid) oil low-temperature refining method which comprises the following steps: slowly adding DHA oil into an alkali solution at low temperature, continuously stirring, standing, removing the lower-layer nigre, washing the oil layer with hot water, and collecting the oil layer; adding activated carbon and argil, decolorizing at low temperature, and filtering; and deodorizing at low temperature for a short time. The refined oil has the advantages of no condensation at low temperature, better flavor and small nutrient loss.

Description

technical field [0001] The invention relates to a low-temperature refining method of DHA oil. Compared with the traditional process, the whole process of low-temperature refining is adopted, so that the small soapstock and easily condensed components in the oil are removed from the refining section, and the oxidation of unsaturated fat in the oil is avoided. . Refined oil does not condense at low temperature, has better flavor and less nutritional loss, and belongs to the field of biotechnology. Background technique [0002] Because DHA oil is rich in unsaturated fatty acids, it will produce chemical reactions at high temperatures, destroy nutrients and generate harmful substances. In the traditional DHA oil refining process, degumming is about 75-90 degrees Celsius, alkali refining is about 90 degrees Celsius, decolorization is about 110 degrees Celsius, and deodorization is 240 degrees Celsius for 2-4 hours. The high temperature and time-consuming refining process will be...

Claims

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Application Information

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IPC IPC(8): C11B3/00C11B3/06C11B3/10
Inventor 白长军金青哲王兴国宁超美黄成陈振宇
Owner 青岛海智源生命科技有限公司
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