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Preparation method of antarctic krill oil

A technology for Antarctic krill oil and Antarctic krill, which is applied in the directions of oil/fat production, fat production, etc., can solve the problems of lack of Antarctic krill processing and preparation methods, transportation and storage difficulties of Antarctic krill, etc. Reduced operating cost, low temperature effect

Active Publication Date: 2014-05-07
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the problem of Antarctic krill transportation and storage difficulties, the best way is to quickly process Antarctic krill to prepare shrimp oil after harvesting, but there is still no on-board processing and preparation method for Antarctic krill shrimp oil

Method used

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Examples

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preparation example Construction

[0022] A kind of on-board processing and preparation method of Antarctic krill oil of the present invention comprises the following steps:

[0023] 1. Raw materials and processing: Drain the fresh and live Antarctic krill and homogenize directly;

[0024] 2. Low-temperature autolysis: The Antarctic krill homogenate is irradiated with ultraviolet rays with a power of 20-40 watts, a wavelength of 200-300 nanometers, and a distance of 0.5-1 meter for 25-35 minutes, and the treated homogenate is placed at 0-4 ℃ (the average ambient temperature in the Antarctic region during the fishing season) for 2 to 10 hours of autolysis;

[0025] 3. High-temperature autolysis: Add 0.5-1 times the volume of water, sodium chloride (final concentration: 2.0-2.5%) and ethanol (0.05-0.1% volume of the homogenate) to the homogenate treated in the second step , with a power of 20 to 40 wavelengths of 200 to 300 nanometers and a distance of 0.5 to 1 meter of ultraviolet radiation for 10 to 40 minutes...

Embodiment 1

[0029] Drain the caught fresh Antarctic krill and directly homogenize it. The homogenate is irradiated with ultraviolet radiation with a power of 40 watts, a wavelength of 200 nanometers, and a distance of 0.5 meters for 25 minutes. temperature) at low temperature for 2 hours; add 0.5 times the volume of water, NaCl (final concentration 2.0-2.5%) and ethanol (final concentration 0.05-0.1%) to the homogenate after low-temperature autolysis treatment, Mix well, and the homogenate is irradiated with ultraviolet light with a power of 20 watts, a wavelength of 200 nanometers, and a distance of 0.5 meters for 10 minutes, and the pH value of the homogenized slurry is adjusted to 7.5-8.0 with 1M HCl or NaOH, and then the temperature is increased by 8°C every 30 minutes. Speed ​​up to 30°C, and autodissolve at high temperature for 8 hours under this condition.

[0030] Add 0.5 times the volume of water to the homogenate after high-temperature autolysis treatment, mix well, and treat it...

Embodiment 2

[0033] Drain the fresh and live Antarctic krill and directly homogenize it. The homogenate is irradiated with ultraviolet radiation with a power of 30 watts, a wavelength of 205 nanometers, and a distance of 1 meter for 25 minutes. temperature) at low temperature for 6 hours; add 1 volume of water, NaCl (final concentration 2.0-2.5%) and ethanol (final concentration 0.05-0.1%) to the homogenate after low-temperature autolysis treatment, Mix evenly, and the homogenate is irradiated with ultraviolet light with a power of 30 watts, a wavelength of 210 nanometers, and a distance of 1 meter for 10 minutes. Use 2M HCl or NaOH to adjust the pH value of the slurry to 7.5-8.0, and then increase the temperature by 3°C every 10 minutes. Speed ​​up to 30°C, and autodissolve at high temperature for 2 hours under this condition;

[0034] Add 1 times the volume of water to the homogenate after high-temperature autolysis treatment, mix well, and treat it with 300-watt ultrasonic (200 nm) for ...

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Abstract

The invention discloses a preparation method of antarctic krill oil, which comprises the following steps: directly homogenizing harvested fresh live antarctic krill, and allowing low-temperature autolysis of the homogenate after ultraviolet irradiation; adding water, sodium chloride and ethanol to the low-temperature autolyzed homogenate, heating the homogenate after ultraviolet irradiation treatment to 30-65 DEG C in a gradient manner, and allowing high-temperature autolysis; performing ultrasonic treatment of the high-temperature autolyzed homogenate, adjusting pH, adding alkali protease for extraneous enzyme enzymolysis; and adding n-hexane to the enzymatic hydrolysate to extract krill oil. The method of the invention is especially suitable for operation immediately in a fishing boat after the fresh live antarctic krill are harvested. The method is simple in operation and has high efficiency. Especially, the use amount of the extraneous enzyme is reduced by using the strong autolysis capacity of the fresh live antarctic krill, so as to reduce production cost. The extraction method has mild conditions, so that some original physiologically active substances in the krill oil can be stored at a maximum level, and the product is both nutritional and functional.

Description

technical field [0001] The invention relates to a method for extracting shrimp oil from Antarctic krill. Background technique [0002] Antarctic krill (Euphausia superba) is one of the largest single species of biological resources on the earth. Its stock is estimated to be about 400-1.5 billion tons, and the annual output of mature shrimp is 300-500 million tons, and the annual catch can reach About 100 million tons, forming a huge potential fishery resource. In recent years, with the gradual depletion of world-wide traditional fishery resources and the proposal of a 200 nautical mile exclusive economic zone, the huge Antarctic krill resources in Antarctic waters have attracted the attention of some pelagic fishery developed countries. my country has also included Antarctic krill resources as one of the main development species for the future development of pelagic fisheries. [0003] At present, the development of Antarctic krill resources is mainly based on the utilizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/02C11B1/10
Inventor 朱蓓薇周大勇秦磊董秀萍迟雅丽
Owner DALIAN POLYTECHNIC UNIVERSITY
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