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Method for enriching lipid in Antarctic krill

An Antarctic krill and lipid technology, applied in the direction of edible oil/fat, food science, application, etc., can solve the problems of toxicity extraction efficiency, high cost, hidden safety hazards, etc., to improve extraction efficiency, improve comprehensive utilization rate, improve quality effect

Inactive Publication Date: 2011-10-26
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, Antarctic krill has a high water content and relatively low lipid content. It is a high-moisture and low-fat biological raw material. For this type of raw material, the traditional extraction method is not only inefficient, but also has a certain safety hazard.
In addition, it has been discussed above that the traditional lipid extraction method often brings defects such as toxicity or low extraction efficiency. Therefore, a new type of lipid-enriched Antarctic krill that is effective, cheap and safe, and suitable for industrial production Set methods need to be developed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In the first step, take 10Kg of frozen Antarctic krill, thaw it, heat it with steam for 5 minutes, drain the water and dry it until the moisture content is lower than 10%, and obtain 1.91Kg of Antarctic krill;

[0046] In the second step, 1Kg of the Antarctic krill obtained in the first step was weighed, and leached with 12Kg (about 18 liters) of n-hexane for 6 hours, and the leaching temperature was 30°C;

[0047] In the third step, the extract obtained in the second step was concentrated under reduced pressure at 40° C., and concentrated to 900 ml after 50 minutes;

[0048] In the fourth step, the concentrated extract obtained in the third step is frozen and crystallized and then filtered to remove impurities such as small solid particles in the extract, and the operating temperature is 20°C;

[0049] In the fifth step, the refined extract obtained in the fourth step is concentrated under reduced pressure until the residual solvent is less than 0.1%, so as to obtain A...

Embodiment 2

[0052] In the first step, 1800g of fresh Antarctic krill is weighed and steamed for 5 minutes, drained and dried until the moisture content is lower than 10%. The dried Antarctic krill was decapitated and shelled to obtain a total of 270g of shrimp heads and 152g of shrimp meat, and the obtained shrimp heads were pulverized;

[0053] In the second step, 200 g of the crushed Antarctic krill shrimp head shell obtained in the first step is weighed, and leached with 1.6 Kg (about 2 liters) of 95% food-grade ethanol for 8 hours, and the leaching temperature is 25° C.;

[0054] In the third step, the extract obtained in the second step was concentrated under reduced pressure at 50° C., and concentrated to 120 ml after 40 minutes;

[0055] In the fourth step, the remaining extract obtained in the third step is frozen and crystallized, and then centrifuged at a high speed, and the operating temperature is 20°C. High-speed centrifugal speed is 8000-10000r / h, centrifuged for 15-20 minu...

Embodiment 3

[0059] In the first step, 2Kg of frozen Antarctic krill is thawed and heated by steam for 5 minutes, drained and dried until the moisture content is lower than 10%, to obtain 367g of Antarctic krill, and pulverized Antarctic krill;

[0060] In the second step, 200g of the pulverized Antarctic krill obtained in the first step was weighed, and leached for 7 hours with 3Kg (about 4 liters) of n-hexane / isopropanol (2:1, V / V). at 25°C;

[0061] In the third step, the extract obtained in the second step was concentrated under reduced pressure at 40° C., and concentrated to 200 ml after 30 minutes;

[0062] In the fourth step, add 5 grams of D101 macroporous resin resin (purchased from Anhui Sanxing Resin Technology Co., Ltd.) to the remaining extract obtained in the third step after freezing and crystallization, and filter at 30° C. for 15 minutes after shaking;

[0063] In the fifth step, the refined extract obtained in the fourth step is concentrated under reduced pressure until ...

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Abstract

The invention provides a method for enriching lipid in Antarctic krill, which comprises the following steps: (1) preprocessing the Antarctic krill serving as a raw material; (2) leaching the Antarctic krill obtained in the step (1) with a solvent to obtain a leaching liquid; (3) concentrating the leaching liquid obtained in the step (2) to a certain volume; (4) refining the concentrated leaching liquid obtained in the step (3); and (5) performing vacuum concentrating on the refined leaching liquid obtained in the step (4) until the residual volume of the solvent is 0.1% lower than the volume of the solvent used in the step (2) so as to obtain the lipid of Antarctic krill. According to the invention, the Antarctic krill or head capsule of Antarctic krill is preferentially used as a raw material, the lipid extraction efficiency is increased through the preprocessing, solvent leaching and refining methods, the lipid quality is improved, the comprehensive utilization rate of Antarctic krill is remarkably increased, the product quality is improved, and the obtained lipid in Antarctic krill is applied to healthcare foods.

Description

technical field [0001] The invention relates to a method for enriching lipids in biological raw materials, in particular to a method for enriching lipids in Antarctic krill Background technique [0002] The lipid extraction method in biological raw materials is greatly affected by the extraction solvent, lipid content and moisture content in the raw material. Generally, the lipid extraction method is relatively simple and easy for low-moisture raw materials rich in lipids. The traditional lipid extraction method is used. Extraction methods such as chloroform-methanol method can realize lipid extraction. In addition, solvents such as n-hexane, diethyl ether, petroleum ether, ethanol and isopropanol can usually be used instead of chloroform and methanol to extract lipids from biological materials. Although the extraction of lipids by the chloroform-methanol method is relatively complete, it is highly toxic, which is not only unsafe to eat, but also endangers the health of ope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23D9/02
Inventor 薛长湖孙甜甜薛勇李兆杰王玉明王静凤常耀光唐庆娟徐杰
Owner OCEAN UNIV OF CHINA
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