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Method for refining mixed oil of microalgae DHA oil

A technology of mixed oil and microalgae, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of unused refining application of mixed oil, achieve the effect of improving product color, improving product quality, and reducing refining consumption

Inactive Publication Date: 2014-12-24
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

[0004] In the field of microbial oil refining technology, there is no application of mixed oil refining at home and abroad

Method used

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  • Method for refining mixed oil of microalgae DHA oil
  • Method for refining mixed oil of microalgae DHA oil
  • Method for refining mixed oil of microalgae DHA oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The mixed oil refining method of embodiment 1 microalgae DHA oil refines microalgae DHA oil

[0024] The specific method of refining the mixed oil used in this experiment is as follows:

[0025] (1) Microalgae DHA mixed oil pretreatment: the solid impurities in the mixed oil are controlled below 0.2% by filtration;

[0026] (2) Degumming of microalgae DHA mixed oil: heat the mixed oil to 45° C., add 0.4% food-grade citric acid aqueous solution with a mass concentration of 55% under rapid stirring, and stir evenly and slowly for 30 minutes;

[0027] (3) Deacidification of microalgae DHA mixed oil (alkali refining): the temperature is controlled at 45° C., the concentration of the added lye is 12%, and the excess alkalinity is 0.2% of the oil weight. After fully mixing, stir evenly and slowly for 40 minutes to obtain a mixture of oil and soap;

[0028] (4) Oil and soap separation: control the temperature of the mixture of oil and soap below 50°C, and centrifuge the mixe...

Embodiment 2

[0034] The mixed oil refining method of embodiment 2 microalgae DHA oil refines microalgae DHA oil

[0035] The specific method of refining the mixed oil used in this experiment is as follows:

[0036] (1) Microalgae DHA mixed oil pretreatment: the solid impurities in the mixed oil are controlled below 0.2% by filtration;

[0037] (2) Degumming of microalgae DHA mixed oil: heat the mixed oil to 50°C, add 0.2% of food-grade phosphoric acid aqueous solution with a mass concentration of 75% under rapid stirring, and stir evenly and slowly for 20 minutes;

[0038] (4) Deacidification of microalgae DHA mixed oil (alkali refining): the temperature is controlled at 50° C., the concentration of the added lye is 12%, and the excess alkalinity is 0.2% of the oil weight. After fully mixing, stir evenly and slowly for 30 minutes to obtain a mixture of oil and soap;

[0039] (5) Oil and soap separation: control the temperature of the mixture of oil and soap below 50°C, and centrifuge the...

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Abstract

The invention relates to a technology for refining microbial oil, and particularly relates to a method for refining mixed oil of microalgae DHA oil. Leached microalgae DHA crude oil is taken as a raw material; before complete desolvation is carried out, firstly, degumming and deacidification are carried out; then desolvation is carried out; and finally decolorization and deodorization are carried out on oil according to the conventional method, thus obtaining refined microalgae DHA oil. The indexes of the microalgae DHA oil prepared by the method for refining the mixed oil of the microalgae DHA oil completely reach the index requirements of the national standard GB-26400. According to the method disclosed by the invention, the product quality and the refining yield (higher than 80%) of the microalgae DHA oil are improved, meanwhile, the oil content of nigre is reduced, the washing process is omitted, energy consumption is reduced, and industrial application of the mixed oil refining technology in the microbial oil is facilitated.

Description

technical field [0001] The invention relates to the refining technology of microbial oil, in particular to a method for refining the mixed oil of microalgae DHA oil. technical background [0002] At present, there are mainly four types of refining processes, namely physical refining, continuous alkali refining, intermittent refining and mixed oil refining. Compared with other refining technologies, the mixed oil refining process has attracted the attention of research institutes and entrepreneurs due to its advantages such as easy operation, high refining rate, low energy consumption, good product oil quality, less environmental pollution and less damage to evaporation equipment. (Zhou Renkai, 2012). [0003] Since C. Cavangh first proposed blended oil refining in 1953, this technology has been widely used in the United States and European countries (Hui HY, 2001). The currently represented miscellaneous oil refining technologies in foreign countries mainly include the tra...

Claims

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Application Information

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IPC IPC(8): C11B3/00
Inventor 宁超美白长军陈振宇刘冬英龚韧
Owner 青岛海智源生命科技有限公司
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