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Preparation method of tuna freeze-dried powder

A technology for tuna and freeze-dried powder, applied in the field of aquatic product processing, can solve the problem of fishy smell and high protein content of tuna freeze-dried powder, and achieve the effects of high protein content, increasing adsorption performance and changing surface potential

Active Publication Date: 2015-12-02
ZHEJIANG MARINE DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of fishy smell in the existing freeze-dried tuna powder, and provide a preparation method of freeze-dried tuna powder. The freeze-dried tuna powder prepared by the present invention not only has no fishy smell but also has high protein content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of tuna freeze-dried powder, comprising the following steps:

[0031] (1) Clean the fresh tuna after removing the viscera, and twist it into minced tuna;

[0032] (2) Mix the minced tuna meat with the NaCl solution with a concentration of 0.4mol / L at a mass ratio of 1:8, and use a magnetic constant temperature stirrer to extract the mixed solution at 10°C and a stirring speed of 500r / min for 1 hour;

[0033] (3) After the leaching is completed, filter the mixed solution to obtain the feed liquid, use 0.01mol / L hydrochloric acid solution to adjust the pH of the feed liquid to 5.0, and then add modified bentonite with a mass ratio of 1:10 to the feed liquid, Reaction 45min;

[0034] (4) After the reaction is completed, use 0.01mol / L NaOH solution to adjust the pH of the feed solution to neutrality, then centrifuge the feed solution at 8000r / min for 20min, and take the supernatant;

[0035] (5) Vacuum concentrating the supernatant in step (5) to 20% ...

Embodiment 2

[0044] A preparation method of tuna freeze-dried powder, comprising the following steps:

[0045] (1) Clean the fresh tuna after removing the viscera, and twist it into minced tuna;

[0046] (2) Mix the minced tuna meat and the NaCl solution with a concentration of 0.45mol / L at a mass ratio of 1:9, and use a magnetic stirrer to extract the mixed solution at 12°C and a stirring speed of 600r / min for 1.5h;

[0047] (3) After the leaching is completed, the mixed solution is filtered to obtain the feed liquid, and after the pH of the feed liquid is adjusted to 5.2 with a 0.01mol / L hydrochloric acid solution, a modified bentonite with a mass ratio of 1:11 is added to the feed liquid, Reaction 50min;

[0048](4) After the reaction is completed, use 0.01mol / L NaOH solution to adjust the pH of the feed solution to neutrality, then centrifuge the feed solution at 9000r / min for 25min, and take the supernatant;

[0049] (5) Vacuum concentrating the supernatant in step (5) to 25% of the...

Embodiment 3

[0058] A preparation method of tuna freeze-dried powder, is characterized in that, comprises the following steps:

[0059] (1) Clean the fresh tuna after removing the viscera, and twist it into minced tuna;

[0060] (2) Mix the minced tuna meat and the NaCl solution with a concentration of 0.5mol / L at a mass ratio of 1:10, and use a magnetic stirrer to extract the mixed solution at 15°C and a stirring speed of 700r / min for 2 hours;

[0061] (3) After the leaching is completed, the mixed solution is filtered to obtain the feed liquid, and after the pH of the feed liquid is adjusted to 5.5 with a 0.01mol / L hydrochloric acid solution, a modified bentonite with a mass ratio of 1:12 is added to the feed liquid, Reaction 60min;

[0062] (4) After the reaction is completed, use 0.01mol / L NaOH solution to adjust the pH of the feed solution to neutrality, then centrifuge the feed solution at 10000r / min for 30min, and take the supernatant;

[0063] (5) Vacuum concentrating the superna...

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PUM

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Abstract

The invention discloses a preparation method of tuna freeze-dried powder, aiming at mainly solving the problem of the fishy smell of the existing tuna freeze-dried powder. The preparation method comprises the following steps: firstly, extracting protein in tuna meat by adopting a diluted salt solution; then carrying out fishy smell elimination treatment on the extracted tuna protein by using modified bentonite; and meanwhile, adjusting the pH of tuna protein liquid before fishy smell elimination by using an isoelectric precipitation principle of the protein so as to precipitate the extracted tuna protein, so as to avoid adsorption of the protein by the modified bentonite. The tuna freeze-dried powder disclosed by the invention has no fishy smell and high protein content.

Description

technical field [0001] The invention relates to the field of aquatic product processing, in particular to a preparation method of tuna freeze-dried powder. Background technique [0002] Tuna is a general term for several genera of fish with a breastplate in the bony fish class Perciformes, also known as tuna and tuna, and is a highly migratory fish that lives in the middle and upper waters of the ocean , mainly in the tropical, subtropical and temperate waters of the Pacific Ocean, Atlantic Ocean, and Indian Ocean. There are 5 genera and 17 species of common tuna. Mainly include albacore tuna, Atlantic tuna, yellowfin tuna, bigeye tuna, bluefin tuna, skipjack tuna, etc. Tuna meat is fresh and tender, with high protein content, biological value as high as 90, and excellent amino acid combination; it is rich in DHA, EPA and other biologically active highly polyunsaturated fatty acids, which can promote brain development and effectively prevent cardiovascular and cerebrovascu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/325A23L1/03A23L1/015A23L17/00A23L5/20A23L29/00
Inventor 杨会成
Owner ZHEJIANG MARINE DEV RES INST
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