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A kind of deodorizing fish oil and preparation method thereof

A fish oil and deodorization technology, which is applied in the fields of fat oil/fat refining, edible oil/fat, fat production, etc. It can solve the problems of fish oil EPA and DHA oxidation or deterioration loss, and achieve the effect of simple operation method

Active Publication Date: 2017-09-22
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the fish oil deodorization method used in industry is the negative pressure evaporation treatment at a higher temperature. Under this condition, the higher temperature will cause the loss of oxidation or deterioration of EPA and DHA in fish oil.
However, the combination of emulsification technology, organic solvent extraction and nanofiltration membrane treatment for deodorization of fish oil has not been reported yet.

Method used

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  • A kind of deodorizing fish oil and preparation method thereof
  • A kind of deodorizing fish oil and preparation method thereof
  • A kind of deodorizing fish oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1), tuna fish oil pretreatment: get tuna fish oil, through degumming, deacidification, decolorization treatment, obtain the tuna oil after pretreatment;

[0022] (2), emulsification: put the pretreated tuna oil obtained in step (1) into a high-speed shear emulsifier, add monoglyceride, the addition amount is 0.005wt%, and emulsify at 3000rpm, the temperature is 40°C ;

[0023] (3), organic solvent extraction: get step (2) gained emulsified tuna oil, add normal hexane, stir 5 minutes, obtain the mixed solution of tuna oil and normal hexane; The volume consumption of described normal hexane is 4% of the emulsified tuna oil volume times;

[0024] (4), nanofiltration membrane treatment: the mixed solution of step (3) gained tuna oil and normal hexane is processed with nanofiltration membrane, and described nanofiltration membrane molecular weight cut-off is 360Da, and the mixed solution of described tuna oil and normal hexane Membrane inlet pressure is 20kg / cm 2 , the n...

Embodiment 2

[0033] (1), anchovy oil pretreatment: take anchovy oil, through degumming, deacidification, decolorization treatment, obtain the anchovy oil after pretreatment;

[0034] (2), emulsification: get the anchovy oil after the pretreatment of step (1) gained and put into high-speed shear emulsifier, add monoglyceride, the addition is 0.005wt%, and emulsification under 5000rpm high-speed shear, temperature 40°C;

[0035] (3), organic solvent extraction: take step (2) gained emulsified anchovies oil, add n-hexane, stir for 5 minutes, obtain the mixed solution of anchovies oil and n-hexane; The volume consumption of described n-hexane is 4% of the emulsified anchovy oil volume times;

[0036] (4), nanofiltration membrane treatment: the mixed solution of step (3) gained anchovies oil and normal hexane is processed with nanofiltration membrane, and described nanofiltration membrane molecular weight cut-off is 360Da, and the mixed solution of described anchovies oil and normal hexane Th...

Embodiment 3

[0045] (1), fin fish oil pretreatment: take fin fish oil, through degumming, deacidification, decolorization treatment, obtain the fin fish oil after pretreatment;

[0046] (2), emulsification: get the fin fish oil after the pretreatment of step (1) gained and put into high-speed shear emulsifier, add monoglyceride, addition is 0.005wt%, and emulsification under 5000rpm high-speed shear, temperature 40°C;

[0047] (3), organic solvent extraction: get step (2) gained emulsified fin fish oil, add n-hexane, stir 5 minutes, obtain the mixed solution of fin fish oil and normal hexane; The volume consumption of described n-hexane is 4% of the emulsified fin fish oil volume times;

[0048] (4), nanofiltration membrane treatment: the mixed solution of step (3) gained fin fish oil and normal hexane is processed with nanofiltration membrane, and described nanofiltration membrane molecular weight cut-off is 360Da, and the mixed solution of described fin fish oil and normal hexane Membr...

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Abstract

The invention provides a fishy fish oil, which is prepared through six steps of fish oil pretreatment, emulsification, organic solvent extraction, nanofiltration membrane treatment, organic solvent removal, and demulsification; the fish oil of the invention has basically no fishy smell, Moreover, the preparation method is simple, does not destroy the nutritional components in the fish oil, and is suitable for industrial production.

Description

(1) Technical field [0001] The invention relates to a deodorizing fish oil prepared by a novel method for deodorizing fish oil, in particular to a deodorizing fish oil prepared by a processing method combining emulsification technology, organic solvent extraction and nanofiltration membrane treatment. (2) Background technology [0002] EPA and DHA are polyunsaturated fatty acids that are very important to the human body, and fish oil, especially deep-sea fish oil, is rich in EPA and DHA. At present, due to the strong fishy smell of fish oil, most fish oil is used as animal feed, and only a small part of fish oil is used for the processing of high value-added nutrition products. [0003] At present, the fish oil deodorization method used in industry is negative pressure evaporation treatment at a higher temperature. Under this condition, the higher temperature will cause the loss of oxidation or deterioration of EPA and DHA in fish oil. However, the technology of combining e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B3/00C11B3/16A23D9/04
Inventor 丁玉庭方亦舟刘建华
Owner ZHEJIANG UNIV OF TECH