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A kind of method for graded preparation of Antarctic krill oil

A technology of Antarctic krill oil and Antarctic krill meal, which is applied in the direction of oil/fat production, fat production, etc., can solve the problems of limited krill oil, differences in the content of phospholipid trace components, and difficulty in maintaining consistency, and achieve excellent anti-oxidation sexual effect

Active Publication Date: 2020-10-23
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The current extraction technology is mostly "one-pot" extensive extraction, but this "one-pot" extensive extraction technology only focuses on the extraction efficiency of lipids, and the composition of the extracted krill oil is limited by the krill raw material, which is difficult to maintain Consistent, especially the phospholipids and trace components in shrimp oil are quite different

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  • A kind of method for graded preparation of Antarctic krill oil
  • A kind of method for graded preparation of Antarctic krill oil

Examples

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Effect test

Embodiment 1

[0028] (1) Take 100g of Antarctic krill powder, first-stage extraction: mix krill powder with acetone (pre-cooled at 4°C for 6h) at a ratio of 1:2 (w / v), stir at 4°C for 15min, and the stirring speed is 300r / min, after the stirring is finished, it is filtered with a Buchner funnel, and the filtrate is precipitated and dried to obtain the first-grade extracted Antarctic krill oil. After weighing, the oil yield is calculated and the chemical composition is determined. The antarctic krill powder filtered out after the primary extraction is dried and desolvated under the conditions of 60°C and -0.1Mpa, and weighed for later use;

[0029] (2) Second-stage extraction: Mix the shrimp powder obtained after (1) extraction with n-hexane at a ratio of 1:2 (w / v), stir at 30°C for 15 minutes, and the stirring speed is 300r / min. The Buchner funnel was used to filter, and the filtrate was precipitated and dried to obtain secondary extracted Antarctic krill oil. After weighing, the yield of ...

Embodiment 2

[0034] (1) Take 200g of Antarctic krill powder, first-stage extraction: mix krill powder with acetone (pre-cooled at 10°C for 6h) at a ratio of 1:3 (w / v), stir at 10°C for 10min, and the stirring speed is 200r / min, after the stirring is finished, it is filtered with a Buchner funnel, and the filtrate is precipitated and dried to obtain the first-grade extracted Antarctic krill oil. After weighing, the oil yield is calculated and the chemical composition is determined. The antarctic krill powder filtered out after the primary extraction is dried and desolvated under the conditions of 60°C and -0.1Mpa, and weighed for later use;

[0035] (2) Second-stage extraction: Mix the shrimp powder obtained after (1) extraction with isohexane at a ratio of 1:3 (w / v), stir at 30°C for 15 minutes, and the stirring speed is 300r / min. The Buchner funnel was used to filter, and the filtrate was precipitated and dried to obtain secondary extracted Antarctic krill oil. After weighing, the yield ...

Embodiment 3

[0040](1) Take 250g of Antarctic krill powder, first-stage extraction: mix krill powder with acetone (pre-cooled at 0°C for 6h) at a ratio of 1:3 (w / v), stir at 0°C for 20min, and the stirring speed is 100r / min, after the stirring is finished, it is filtered with a Buchner funnel, and the filtrate is precipitated and dried to obtain the first-grade extracted Antarctic krill oil. After weighing, the oil yield is calculated and the chemical composition is determined. The antarctic krill powder filtered out after the primary extraction is dried and desolvated under the conditions of 60°C and -0.1Mpa, and weighed for later use;

[0041] (2) Second-stage extraction: Mix the shrimp powder obtained after the extraction in (1) with n-hexane at a ratio of 1:3 (w / v), stir at 25°C for 20 minutes, and the stirring speed is 200r / min. The Buchner funnel was used to filter, and the filtrate was precipitated and dried to obtain secondary extracted Antarctic krill oil. After weighing, the yie...

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Abstract

The invention provides a method for grading preparation of Euphausia superba oil, comprising the following steps: carrying out first-stage extraction on Euphausia superba powder by the use of acetone to obtain first-stage extracted Euphausia superba oil and first-stage Euphausia superba powder; carrying out second-stage extraction on the first-stage extracted Euphausia superba powder by the use of an alkanes solvent to obtain second-stage extracted Euphausia superb oil and second-stage extracted Euphausia superb powder; and carrying out third-stage extraction on the second-stage extracted Euphausia superba powder by the use of an alcohols solvent to obtain third-stage extracted Euphausia superba oil. By the use of the three different polar solvents for three-step extraction of Euphausia superb powder, refined grading of lipid is achieved and extraction of lipid in Euphausia superba powder also can be maximized.

Description

technical field [0001] The invention belongs to the field of deep processing of marine organisms, and in particular relates to a method for graded preparation of Antarctic krill oil. Background technique [0002] Antarctic krill (Euphausia superba), commonly known as Antarctic krill, is an important marine organism living in the Southern Ocean, and its resources are about 379 million tons. Antarctic krill fresh shrimp contains about 11.9-15.4% protein, 0.5-3.6% lipid, 3% ash, 2% sugar, and the rest is water. The lipid extracted from Antarctic krill is called Antarctic krill oil. In recent years, Antarctic krill oil has attracted increasing attention because of its unique structure and function. [0003] The main component of common cooking oil is triglyceride (95%), while the composition of Antarctic krill oil is more complex. Studies have reported that the triglyceride content in Antarctic krill lipids is only 22.1-38.4%, while the polar lipid content is as high as 56.4-7...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/10
CPCC11B1/10
Inventor 金青哲谢丹金俊唐天培王兴国
Owner JIANGNAN UNIV
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