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Deaminated low-fishy-smell krill oil and preparation method thereof

A technology of krill oil and fishy krill, which is applied in the direction of fat oil/fat refining, fat oil/fat production, edible oil/fat composition, etc., can solve the problems of not being able to prevent trimethylamine and trimethylamine oxide from entering the human body, and harming the human body. Achieve the effects of improving food safety, reducing fishy smell and improving sensory quality

Active Publication Date: 2018-11-30
LUHUA BIOMARINE SHANDONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing Antarctic krill oil extraction process, in order to achieve the effect of removing fishy smell, sweet orange oil and lutein are usually added, or Antarctic krill oil is made into microcapsule powder to cover the fishy smell. smell but can not prevent trimethylamine and trimethylamine oxide from entering the human body, causing harm to the human body

Method used

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  • Deaminated low-fishy-smell krill oil and preparation method thereof
  • Deaminated low-fishy-smell krill oil and preparation method thereof
  • Deaminated low-fishy-smell krill oil and preparation method thereof

Examples

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preparation example Construction

[0028] The preparation method of the deaminated low fishy krill oil provided in the examples of this specification includes:

[0029] Extraction: use Antarctic krill powder as raw material, extract with 90%~100% ethanol as solvent, the ratio of solid to liquid is 1:3-1:6, the extraction time is 30-60min, and the extraction is 3 times, or continuous countercurrent extraction, The ratio of solid to liquid is 1:3-1:6, and the time is 30-60min to obtain the extract;

[0030] Adsorption: The extract is deaminated and deodorized by using an adsorption medium. The method is to obtain the effluent through an ion exchange column or filter it after putting it into a reactor to obtain a filtrate;

[0031] Concentration: Concentrate the effluent or filtrate, and the concentration of the concentrated solution after concentration is 10%-20%;

[0032] Washing: add pure water to the concentrate, the amount of pure water is 70%-90% of the mass of the concentrate, mix well and let stand;

[0...

Embodiment 1

[0036] The Antarctic krill powder was extracted with 95% ethanol for 30 minutes at a solid-liquid ratio of 1:3, and extracted continuously for 3 times to obtain an extract. The extract was sequentially passed through the ion exchanger I filled with HND-8 cation exchange resin and the ion exchanger II filled with D4020 macroporous adsorption resin, the adsorption temperature was 25°C, the liquid flow rate was 15BV / h, and the working exchange capacity of the resin was 8BV. Collect the effluent. Concentrate the effluent to 15%, add pure water in an amount of 70% of the mass of the concentrated solution, mix well, let stand to separate layers, take the lower layer solution, and desolvate at 62°C and a vacuum of -0.09MPa to obtain Antarctic Phosphorus Shrimp Oil 10.35%.

Embodiment 2

[0038] The procedure is the same as in Example 1, except that in the adsorption step, the adsorption temperature is 25°C, the liquid flow rate is 9BV / h, and the working exchange capacity of the resin is 12BV. Finally, 10.64% Antarctic krill oil was obtained.

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Abstract

The invention provides deaminated low-fishy-smell krill oil and a preparation method thereof. The method comprises the steps of deamination and fishy smell removal which are performed on a finished product krill oil or a krill oil extract by using an adsorption medium, wherein the krill oil extract is obtained by performing extracting on krill and / or krill powder by using an organic solvent, and the adsorption medium is cation exchange resin. The invention also provides the deaminated low-fishy-smell krill oil prepared by using the method, trimethylamine-nitrogen in the deaminated low-fishy-smell krill oil is not more than 5 mg / kg, and trimethylamine oxide-nitrogen is not more than 5 mg / kg; by optimizing the fishy smell removal process, the sensory quality of the krill oil can be improved,and meanwhile the food safety can be improved; and it is known through experimental data that the content of the trimethylamine-nitrogen is reduced by 96.88% at most, and the content of the trimethylamine oxide-nitrogen is reduced by 99.27% at most.

Description

technical field [0001] The invention relates to the technical field of functional food processing, in particular to deamination and low fishy krill oil and a preparation method thereof. Background technique [0002] Krill is a kind of marine planktonic crustacean with wide distribution, large quantity and abundant resources. Antarctic krill, in particular, is one of the single species with the largest biomass on Earth. Antarctic krill oil is a functional oil prepared from Antarctic krill. Its main active ingredients are phospholipids, astaxanthin, and polyunsaturated fatty acids. Antarctic krill oil contains a variety of fatty acids, especially rich in unsaturated fatty acids, especially polyunsaturated fatty acids (PUFAs), in which eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) respectively account for the total fatty acid content 15%-25.3% and 9.3%-21.2%, so Antarctic krill is a good source of EPA and DHA. Studies have shown that Antarctic krill oil has sign...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/10C11B1/10A23D7/04A23D7/005
CPCA23D7/005A23D7/04C11B1/10C11B3/10
Inventor 徐晓斌范宁宁宗俊甄方卉
Owner LUHUA BIOMARINE SHANDONG CO LTD
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