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Extraction method of superba oil, capsule and preparation method

An extraction method and krill oil technology, which is applied in the fields of fat oil/fat refining, fat oil/fat production, fat production, etc., can solve the problems of other nutrient damage, solvent residue, affecting the utilization of krill protein, etc., and achieve high extraction rate , No organic solvent residue, high nutritional value

Active Publication Date: 2018-02-06
GUANGDONG POLYTECHNIC OF ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The extraction methods of krill oil at home and abroad mainly include: organic solvent method, enzymatic hydrolysis assisted extraction method, supercritical fluid extraction and other methods. Compared with other methods, the organic solvent method has the advantages of simple process, high extraction efficiency and low cost. It is still the most commonly used method in industrialization, but the method of extracting shrimp oil with whole shrimp as raw material and using organic solvents has the following problems: organic solvent extraction will inevitably have solvent residues, which affects the utilization of krill protein and causes damage to other nutrients. Destruction, affecting the full utilization of krill resources

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  • Extraction method of superba oil, capsule and preparation method

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Comparison scheme
Effect test

Embodiment 1

[0049] A method for extracting krill oil, comprising the following steps:

[0050] Step 1. Dry the body surface moisture within 3 hours after Antarctic krill is caught, and collect the blown liquid I; wherein, the step 1 also includes the following steps: a. Evenly laying Antarctic krill on the A multi-layer drying net distributed from top to bottom, and the multi-layer drying net is arranged in a relatively airtight drying device; b. From the bottom of the drying device, dry nitrogen gas is passed into it, and the temperature of the nitrogen gas is 50°C; c. Nitrogen is discharged from the outlet of the drying device after passing through the multi-layer drying net; d. The discharged nitrogen with water vapor is separated by water vapor to obtain liquid I;

[0051] Step 2. Freeze the Antarctic krill after drying the body surface, and then use microwave thawing treatment, and repeat the freezing and microwave thawing treatment twice; the internal temperature of the frozen Antarct...

Embodiment 2

[0063] A method for extracting krill oil, comprising the following steps:

[0064] Step 1. Dry the body surface moisture within 2.5 hours after the Antarctic krill is caught, and collect the blown liquid I; wherein, the step 1 also includes the following steps: a. Spread the Antarctic krill evenly on the A multi-layer drying net distributed from top to bottom, and the multi-layer drying net is arranged in a relatively airtight drying device; b, from the bottom of the drying device, dry nitrogen gas is passed into it, and the temperature of the nitrogen gas is 55 ° C; c. Nitrogen is discharged from the outlet of the drying device after passing through the multi-layer drying net; d. The discharged nitrogen with water vapor is separated by water vapor to obtain liquid I;

[0065] Step 2. Freeze the Antarctic krill after drying the body surface, and then use microwave thawing treatment, and repeat the freezing and microwave thawing treatment 3 times; the internal temperature of th...

Embodiment 3

[0077] A method for extracting krill oil, comprising the following steps:

[0078] Step 1. Dry the body surface moisture of Antarctic krill within 2 hours after fishing, and collect the blown liquid I; wherein, the step 1 also includes the following steps: a. Spread the Antarctic krill evenly on the A multi-layer drying net distributed from top to bottom, and the multi-layer drying net is arranged in a relatively airtight drying device; b. From the bottom of the drying device, dry nitrogen gas is passed into it, and the temperature of the nitrogen gas is 60°C; c. Nitrogen is discharged from the outlet of the drying device after passing through the multi-layer drying net; d. The discharged nitrogen with water vapor is separated by water vapor to obtain liquid I;

[0079] Step 2. Freeze the Antarctic krill after drying the body surface, and then use microwave thawing treatment, and repeat the freezing and microwave thawing treatment 3 times; the internal temperature of the froze...

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Abstract

The invention discloses an extraction method of superba oil. The extraction method comprises the following steps: carrying out blow-drying on surface moisture of euphausia superba, repeatedly performing freezing-microwave unfreezing treatment, and collecting liquid II; making the euphausia superba into euphausia superba quick-freeze powder, evenly mixing the euphausia superba quick-freeze powder with liquid I and performing ultrasonic pulverization treatment to obtain a mixture II; performing centrifugation on the mixture II to obtain residues I and liquid III; performing instantaneous pressure difference flash evaporation on the residues I to obtain liquid IV and residues II; performing squeezing treatment on the residues II to obtain primary superba oil and residues III; mixing the residues III, the liquid II and the liquid III to obtain a mixture III, then performing enzymolysis and centrifugation to obtain enzymatic liquid, and extracting the enzymatic liquid by using an organic solvent to obtain secondary superba oil; mixing the secondary superba oil, liquid IV and the primary superba oil, carrying out centrifugation, impurity removal and dehydration, and refining to obtain the superba oil. An extraction rate of the superba oil prepared by the method disclosed by the invention is high, active ingredients in the superba oil can be effectively reserved, and finally, the obtained product has a high nutrition value and has no residues of organic solvents.

Description

technical field [0001] The invention relates to the technical field of bioactive substances and functional food production formulas, in particular to a method for extracting krill oil. Background technique [0002] Antarctic krill is rich in resources, and the growth environment is free from industrial pollution. Krill oil is a lipid extracted from Antarctic krill (Euphausia superba), and its main components include: glycerides, phospholipids, astaxanthin, sterols, etc. At the same time, krill oil contains natural antioxidant astaxanthin, the content can reach 100mg / kg-300mg / kg, its antioxidant capacity is much higher than that of vitamin E, lycopene and other substances, and it is known as the strongest antioxidant activity of natural substances. Existing studies have proved that krill oil is rich in various unsaturated fatty acids, among which the content of long-chain omega-3 polyunsaturated fatty acids EPA and DHA is as high as 15.86%. Unlike fish oil and cod liver oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/00C11B1/02C11B1/16C11B1/06C11B3/00
CPCC11B1/00C11B1/02C11B1/025C11B1/06C11B1/16C11B3/001C11B3/006
Inventor 刘慧燕张少敏贾洪信张志平潘兆广
Owner GUANGDONG POLYTECHNIC OF ENVIRONMENTAL PROTECTION ENG
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