Euphausia superba powder with enriched lipid and preparing method thereof

A technology of Antarctic krill powder and krill powder, applied in food heat treatment, food science, food drying, etc., can solve the problems of long heating process, loss of lipid and protein, waste of resources and energy, etc., to improve content and quality, Prevent oxidative degradation, reduce the effect of oxidative degradation

Active Publication Date: 2016-06-08
OCEAN UNIV OF CHINA
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] At present, most Antarctic krill meal products on the market are shrimp meal for feed, and its processing process and technology are relatively extensive, resulting in product quality being affected by the process, and it is difficult to meet the demand for higher-level products
At present, the most commonly used shrimp meal processing technology is krill cooking-dehydration-drying. The cooking process adopts an ordinary horizontal spiral cooking machine, and the heating process is longer, generally more than 15 minutes. In the dehydration process, the cooking liquid is separated together, resulting in the loss of solids; dehydration generally adopts a horizontal screw centrifuge or a screw press dehydrator, and the dehydrated solid phase material enters As for the drying equipment, the currently used drying equipment is a horizontal disc dryer, which is heated by indirect steam and takes a long time to dry. The quality of the shrimp meal is greatly affected during the whole drying process. Astaxanthin and lipids in the shrimp meal Such as the main active ingredients in the drying process due to the long-term influence of heat and humidity, resulting in oxidative degradation, greatly reducing the quality of shrimp powder
The traditional processing method leads to the loss of lipid and protein, which reduces the output rate of shrimp meal. At the same time, because a large amount of cooking liquid containing a large amount of protein and lipid cannot be fully recycled, the production cost is increased and the environment is brought a certain pressure, resulting in waste of resources and energy inefficiency

Method used

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  • Euphausia superba powder with enriched lipid and preparing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of processing method of Antarctic krill powder enriched in lipids,

[0036] In the first step, the frozen Antarctic krill powder is thawed by a microwave thawing machine. After thawing, the temperature of the Antarctic krill is about 5°C, and the thawed Antarctic krill is harvested with a 40-mesh meat harvester;

[0037] In the second step, the Antarctic krill meat is heated to 90° C. within 2 minutes to obtain krill cooking material A and cooking liquid A;

[0038] In the third step, the krill cooking material A and the cooking liquid A are stirred and mixed with the uncooked Antarctic krill meat according to the mass ratio of 5:1 to obtain the mixed krill material, and the mixing temperature is kept at 45° C., and stirred for 60 minutes;

[0039] The fourth step is to continue heating the mixed krill feed to 90°C within 2 minutes to obtain krill cooking material B and cooking liquid B;

[0040] The fifth step is to separate the krill cooking material B from th...

Embodiment 2

[0049] Take 10kg of frozen Antarctic krill and thaw it with microwave. After thawing, the overall temperature is 4°C and the mass is 9.6kg. The final mass is 9.5kg; take 7.6kg krill meat and heat it to 90°C; then mix 7.6kg krill meat and cooking liquid with 1.9kg krill meat, the temperature after mixing is 55°C, and stir the mixed material with a mixer for 60min ; After heating the mixed krill feed to 90°C, centrifuge it with a centrifuge at 4500×g; take out the obtained precipitate, put it into an oven for drying, and dry it until the moisture content is 50%, so as to obtain pre-dried Antarctic krill powder; Concentrate the obtained supernatant in a rotary evaporator under reduced pressure until the solid content reaches 20% to obtain a concentrated solution; the dried Antarctic krill powder and the concentrated solution are mixed, and then dried by an airflow dryer. The drying time is The drying time was 5min, and the final moisture content was 10.4%. The dried shrimp powder...

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Abstract

The invention discloses a processing method of euphausia superba powder with enriched lipid. The processing method comprises the following steps that 1, euphausiacea raw materials are pretreated to obtain an euphausiacea pretreatment material; 2, the euphausiacea pretreatment material is heated to obtain an euphausiacea boiling material A and boiling liquid A; 3, the euphausiacea boiling material A and the boiling liquid A are mixed with the euphausiacea pretreatment material in a stirred mode according to the proportion to obtain a mixed euphausiacea material; 4, the mixed euphausiacea material continues to be heated to obtain an euphausiacea boiling material B and boiling liquid B; 5, the euphausiacea boiling material B and the boiling liquid B are separated; 6, the euphausiacea boiling material B is preliminarily dehydrated to obtain predried euphausiacea powder; 7, the boiling liquid B is concentrated, and concentrated liquor is sprayed back to the predried euphausiacea powder; 8, the predried euphausiacea powder is dried fast to obtain the euphausia superba powder with the enriched lipid. The processing method has the advantages that the output rate of the euphausia superba powder is increased; oxidative degradation of astaxanthin and lipid in the euphausia superba powder is reduced; the content of the lipid in the euphausia superba powder is increased, and quality is improved.

Description

technical field [0001] The invention relates to the field of high-value utilization of pelagic biological resources, in particular to lipid-rich Antarctic krill powder and a preparation method thereof. Background technique [0002] Antarctic krill is the largest single biological resource on the earth, with a total biomass of about 650-1000 million tons. It is known as the last animal protein bank on the earth, and has huge prospects for the development and utilization of industrial raw materials and medical care. Antarctic krill is rich in protein and lipid. The huge biomass and rich nutritional value of Antarctic krill make it extremely potential for development and utilization. Antarctic krill powder is currently the main form of processing and utilization of Antarctic krill. Antarctic krill powder is used as high-quality raw material of aquatic protein in aquaculture feed, and on the other hand, it is used as the main raw material in the production of health food Antarct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L17/40
CPCA23V2002/00A23V2300/10A23V2300/24
Inventor 薛长湖姜晓明薛勇徐杰王玉明王静凤李兆杰陈桂东
Owner OCEAN UNIV OF CHINA
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