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A kind of preparation method of high-quality Antarctic krill oil

An Antarctic krill oil, high-quality technology, applied in fat oil/fat refining, fat oil/fat production, fat production, etc., can solve the problems of technology lag, high moisture content, loss of active function, etc., to ensure production safety, reduce Moisture content, the effect of reducing processing costs

Active Publication Date: 2021-07-20
RIZHAO POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there are still many difficult problems in the process of preparing Antarctic krill oil by existing method, such as: (1) polar impurities are more in Antarctic krill oil, and moisture content is higher, cause the flowability and transparency of Antarctic krill oil not good, Affect the processing attributes and sensory characteristics of the product; (2) Antarctic krill oil has a strong fishy smell, and its products are not easily accepted by consumers; (3) The efficacy factors such as polyunsaturated fatty acids and astaxanthin in krill oil products, Because of the high degree of unsaturation of its molecules, it is easily oxidized and degraded under natural conditions, resulting in the loss of its active function and poor storage stability. This property also limits the application and consumption of Antarctic krill oil; (4) extracting shrimp oil The final by-product krill powder contains high solvent residues, which brings great hidden dangers to processing and product safety, resulting in a relatively lagging behind in the comprehensive development of resource serialization

Method used

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  • A kind of preparation method of high-quality Antarctic krill oil
  • A kind of preparation method of high-quality Antarctic krill oil
  • A kind of preparation method of high-quality Antarctic krill oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Take 100kg of Antarctic krill powder, add 100L of composite grinding agent (the mass ratio of ethanol: Tween 80: sodium ascorbate is 1:2:0.05), stir well, and then grind at 60°C to make it Homogeneous system, to obtain a primary grinding system. Add 200 L of enzyme-containing aqueous solution (containing 3000 U / g of neutral protease and 1000 U / g of Candida esterase) at a temperature of 60° C. to the primary grinding system. The pH of the system was adjusted to 7.0 with 0.1 mol / L hydrochloric acid solution and 0.1 mol / L sodium hydroxide solution, and then ground at 60° C. for 1 hour to obtain a secondary grinding system. The secondary grinding system is filtered with 60-mesh silk cloth, and after filtration, the filtrate is spray-dried to make the water content therein 8% to obtain crude extraction. Add 3 times the mass volume of extractant (20% ethyl acetate in ethanol) to the crude extract, and extract at room temperature for 1 hour to obtain an extract. Concentrate t...

Embodiment 2

[0046] Take 200g of Antarctic krill powder, add 200mL of composite grinding agent (wherein the mass ratio of glycerin: Tween 85: tea polyphenols is 1:1.5:0.02), fully stir and mix, and then grind at 50°C to make It is a homogeneous system, resulting in a primary grinding system. Add 300 mL of an enzyme-containing aqueous solution (containing 4000 U / g of papain and 800 U / g of Aspergillus esterase) at a temperature of 50° C. to the primary grinding system. The pH of the system was adjusted to 7.0 with 0.1 mol / L citric acid solution and 0.1 mol / L potassium hydroxide solution, and then ground at 45° C. for 1.5 h to obtain a secondary grinding system. Then centrifuge under the condition of 2000r / min for 15min, take the supernatant, spray dry it, make the water content therein be 10%, and obtain the rough extraction. Add 5 times the mass volume of extractant (10% ethyl acetate ethanol solution, which contains 0.001% gallate by mass volume fraction) to the crude extract, and extract...

Embodiment 3

[0050] Take 250g of Antarctic krill powder, add 500mL of compound grinding agent (the mass ratio of ethanol: sucrose stearate: coenzyme Q10: 1:2:0.01), stir well, and then grind at 55°C , so that it is a homogeneous system, and a primary grinding system is obtained. Add 1500 mL of an enzyme-containing aqueous solution (containing 3500 U / g of bromelain and 1200 U / g of Pseudomonas esterase) at a temperature of 45° C. to the primary grinding system. The pH of the system was adjusted to 6.5 with 0.1 mol / L acetic acid solution and 0.1 mol / L sodium hydroxide solution, and then ground at 40°C for 2 hours to obtain a secondary grinding system. Then filter with 70-mesh silk cloth, spray dry the filtrate to make the water content therein 70%, and obtain rough extraction. Add 4 times the mass volume of extractant (5% ethyl acetate ethanol solution, which contains carnosic acid with a mass volume fraction of 0.002%) to the crude extract, and extract at room temperature for 0.5 h to obtai...

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Abstract

The invention provides a method for preparing Antarctic krill oil. In the method, Antarctic krill powder is used as a raw material, and under specific system conditions, the lipid-rich Antarctic krill The crude components are enriched, and then separated and dried to obtain a crude extract; the crude extract is leached with a mixed solvent of ethanol and ethyl acetate, and the extract is then subjected to primary concentration, cooling, separation, and secondary concentration After processing, high-quality Antarctic krill oil can be obtained. The Antarctic krill oil prepared by the present invention has high content of phospholipids, astaxanthin, DHA, EPA and other functional companions, good fluidity, and better deodorization of krill oil, and at the same time by-products after extraction Defatted krill powder has low organic solvent content and good safety, which provides a good raw material for subsequent development into food-grade products.

Description

technical field [0001] The invention belongs to the technical field of separation and preparation of natural products, and in particular relates to a preparation method of high-quality Antarctic krill oil. [0002] technical background [0003] The biological reserves of Antarctic krill are huge. Without affecting the balance of the biological chain, about 80 million tons can be fished every year, which is equivalent to twice the current annual catch of marine aquatic products in the world. At present, various countries have listed it as an important strategic reserve resource, especially in the process of building the offshore granary, and it belongs to the three most important marine resources to be developed. How to carry out comprehensive high-value development and utilization of Antarctic krill is a major issue facing the industry. In recent years, Antarctic krill oil has attracted much attention due to its unique composition and functional properties. In particular, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/00C11B1/02C11B3/00C11B3/16
CPCC11B1/00C11B1/025C11B3/001C11B3/006C11B3/16
Inventor 周庆新张冰
Owner RIZHAO POLYTECHNIC
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