Preparation method of moderately processed DHA (Docosahexaenoic acid) microalgae grease

A technology of microalgae oil and fat, which is applied in the fields of fat oil/fat refining, edible oil/fat, fat production, etc., which can solve the problems of waste of resources and energy, unfavorable human health, loss of nutrients, etc.

Active Publication Date: 2013-10-16
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

[0003] In order to produce qualified DHA microalgae oil and ensure its shelf life, it is necessary to carry out degumming, deacidification, deodorization and other treatments on the crude oil of DHA microalgae oil to remove colloid, free acid, heavy metal ions, etc. in the oil, but in Over

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1:

[0030] DHA microalgae fat and oil are heated to 75℃ by heat exchanger, add 0.3% citric acid by weight of fat and 25% concentration, react in acidification tank for 25min, add 2.0% lye for flocculation, and add hot soft water of 1.5% weight by fat , React in the hydration tank for 45 minutes, heat up to 85°C to centrifuge the grease feet and degummed grease, and dry the degummed grease to remove water and residual solvent.

[0031] Decrease the temperature of the degummed grease to 39℃, then add lye with a concentration of 6.5% to react for 50-65min for alkali refining and deacidification; heat to 85℃ for centrifugal separation, and add 7.0% of the fat weight to 90℃ soft water for washing , Centrifugal separation, to neutralize grease;

[0032] DHA microalgae grease neutralized by alkali refining is dried at 100°C, and then mixed with decolorizing agent (the decolorizing agent is a mixture of activated carbon and activated clay, the mass ratio of activated carbon ...

Example Embodiment

[0035] Example 2

[0036] DHA microalgae crude oil is heated to 75°C by a heat exchanger, add 0.3% citric acid with a concentration of 30% by weight, react in the acidification tank for 25 minutes, add 3.0% lye for flocculation, and add hot soft water with 2.0% by weight. The reaction in the hydration tank is 45 minutes, and the temperature is raised to 85°C to separate the oil feet and degummed oil by centrifugation, and the degummed oil is dried to remove water and residual solvent.

[0037] Decrease the temperature of the degummed oil to 40°C, then add lye with a concentration of 5.8% to react for 50-65min for alkali refining and deacidification; heat to 85°C for centrifugal separation, and add soft water at 90°C to wash at 6.5% of the oil weight. Centrifugal separation to obtain neutralized oil;

[0038] DHA microalgae grease neutralized by alkali refining is dried at 100°C, and then mixed with decolorizing agent (the decolorizing agent is a mixture of activated carbon and activ...

Example Embodiment

[0041] Example 3

[0042] DHA microalgae fat oil is heated to 73°C by a heat exchanger, add 0.4% citric acid with a concentration of 20% by weight, react in the acidification tank for 25 minutes, add 2.5% lye for flocculation, and add 1.0% by weight of hot soft water. The reaction in the hydration tank is 45 minutes, and the temperature is raised to 85°C to separate the oil feet and degummed oil by centrifugation, and the degummed oil is dried to remove water and residual solvent.

[0043] Decrease the degumming oil temperature to 40℃, then add 7.0% lye to react for 55min for alkali refining and deacidification; heat to 85℃ for centrifugal separation, and add 8.0% of the oil weight to 90℃ soft water for washing and centrifugal separation , Get neutralized oil;

[0044] DHA microalgae oil neutralized by alkali refining is dried at 100°C, and then mixed with decolorizing agent (the decolorizing agent is a mixture of activated carbon and activated clay, the mass ratio of activated carb...

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PUM

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Abstract

The invention provides a preparation method of moderately processed DHA (Docosahexaenoic acid) microalgae grease. The method comprises the following steps of: first, degumming to remove colloid and impurities in microalgae grease; after degumming, refining alkali and neutralizing at low temperature to remove free acids; then, decoloring in a low temperature vacuum condition to remove residual soap, phosphorus, pigments and the like; and finally, deodorizing through combination of a packed tower and a plate tower, and thermosensitively decoloring to remove fatty acid and small molecular stink substances, wherein the generation amount of trans-fatty acids can be reduced, the loss of vitamin D is reduced, the energy is saved and the consumption is reduced, and the quality of grease products is improved. Due to the adoption of the method, the DHA microalgae grease with low content of trans-fatty acids (less than 1.0%) and low loss ratio of vitamin D can be prepared.

Description

technical field [0001] The invention relates to the technical field of oil refining, in particular to a method for preparing moderately processed DHA microalgae oil. technical background [0002] With the development of food science and technology, various functional oils and fats continue to enter people's lives and play an important role in improving people's nutrition and health. As a new resource food, DHA microalgae oil is also a functional oil rich in DHA, which can enhance memory and thinking ability, improve intelligence and promote brain development. [0003] In order to produce qualified DHA microalgae oil and ensure its shelf life, it is necessary to carry out degumming, deacidification, deodorization and other treatments on the crude oil of DHA microalgae oil to remove colloid, free acid, heavy metal ions, etc. in the oil, but in Over-processing exists in the current field of oil finishing, which not only causes waste of resources and energy, but also causes the...

Claims

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Application Information

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IPC IPC(8): C11B3/00C11B3/06A23D9/04
Inventor 白长军宁超美白红超戚桂斌初跃峰李玉玲
Owner 青岛海智源生命科技有限公司
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