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Portunus trituberculatus fresh-retaining living-keeping method

A kind of portunus, fresh technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of inability to inhibit microbial reproduction, poor stability of sodium percarbonate, and fast release of oxygen, etc., and achieve long-term transportation , Improve the survival rate and survival time, the effect of easy operation

Inactive Publication Date: 2018-05-08
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This fresh-keeping method has the following disadvantages: 1. directly place swimming crabs in seawater of 2-5°C, the temperature difference is too large, and the crabs cannot adapt to the sudden environment, resulting in broken feet or even death, reducing the survival rate; 2. adding vitamins to the seawater Vitamin C in C can only alleviate the stress response of the crab body. When the crab is picked up from the water for packaging, it is easy to cause the crab to die due to hypoxia; 3. The oxygen enhancer is sodium percarbonate, which has poor stability. It is easy to decompose during use, so that the active oxygen content is reduced. In addition, the speed of sodium percarbonate releasing oxygen is too fast, resulting in waste; 4. Can not inhibit the reproduction of microorganisms, which can easily cause the death of crabs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for keeping fresh and alive of Portunus, comprising the following steps:

[0029] (1) Breeding: Bind the large claws of fresh and live swimming crabs with ropes or rubber bands, and place them in seawater added with 10% of seawater mass-preserving agent for 1 to 2 days. Introduce ozone into the seawater for 2 minutes to keep the ozone concentration in the seawater at 0.65 mg / L; the life-preserving agent includes the following raw materials in parts by weight: 150 parts of total flavonoid extract, 20 parts of aldosterone, 10 parts of rosmarinic acid, 5 parts of American Xanthophyllin, 10 parts of active polypeptide calcium zinc chelate, 5 parts of glucose oxidase and 700 parts of water;

[0030] The preparation method of active polypeptide calcium zinc chelate is:

[0031] a) Fermentation: use actinomycetes to ferment active polypeptides; the fermentation steps are: weigh 33 parts of soybean powder, 10 parts of starch, 7 parts of yeast extract, 15 parts of sucr...

Embodiment 2

[0038] A method for keeping fresh and alive of Portunus, comprising the following steps:

[0039] (1) Breeding: Bind the large claws of fresh and live swimming crabs with ropes or rubber bands, and place them in seawater added with 10% of seawater mass-preserving agent for 1 to 2 days. Introduce ozone into seawater for 2 minutes to keep the ozone concentration in seawater at 0.65 mg / L; the activating agent includes the following raw materials in parts by weight: 230 parts of total flavonoid extract, 27 parts of aldosterone, 22 parts of rosmarinic acid, 8 parts of American Xanthoxylin, 12 parts of active polypeptide calcium zinc chelate, 7 parts of glucose oxidase and 780 parts of water;

[0040] The preparation method of active polypeptide calcium zinc chelate is:

[0041] a) Fermentation: use actinomycetes to ferment active polypeptides; the fermentation steps are: weigh 33 parts of soybean powder, 10 parts of starch, 7 parts of yeast extract, 15 parts of sucrose, 1 part of ...

Embodiment 3

[0048] A method for keeping fresh and alive of Portunus, comprising the following steps:

[0049] (1) Breeding: Bind the large claws of fresh and live swimming crabs with ropes or rubber bands, and place them in seawater added with 10% of seawater mass-preserving agent for 1 to 2 days. Introduce ozone into the seawater for 2 minutes to keep the ozone concentration in the seawater at 0.65 mg / L; Xanthoxylin, 15 parts of active polypeptide calcium zinc chelate, 10 parts of glucose oxidase and 850 parts of water;

[0050] The preparation method of active polypeptide calcium zinc chelate is:

[0051] a) Fermentation: use actinomycetes to ferment active polypeptides; the fermentation steps are: weigh 33 parts of soybean powder, 10 parts of starch, 7 parts of yeast extract, 15 parts of sucrose, 1 part of sodium chloride, 4 parts of peptone, dihydrogen phosphate 1 part of potassium, 1 part of magnesium sulfate heptahydrate, 20 parts of glucose, 3 parts of calcium carbonate, 1200 par...

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Abstract

The invention relates to a Portunus trituberculatus fresh-retaining living-keeping method. The Portunus trituberculatus fresh-retaining living-keeping method includes breeding, grading cooling and anesthetization, and packaging. The invention optimizes a formula of an oxygen producer, discloses a preparation method of the oxygen producer, can effectively control the releasing speed of oxygen on the premise that the oxygen producer is completed disintegrated, and can improve the utilization rate and a use effect of the oxygen producer; and the Portunus trituberculatus fresh-retaining living-keeping method is easy to operate, is low in cost, can greatly improve the survival rate of sea crabs and prolong the survival time of the sea crabs, can achieve long-distance long-time transport of thesea crabs in a waterless packaging manner, and is significant in economic benefits.

Description

technical field [0001] The invention relates to the technical field of fresh-keeping aquatic products, in particular to a method for keeping swimming crabs fresh and alive. Background technique [0002] Swimming crab is an important seawater economic crab in my country. Due to its unique flavor and rich nutritional value, it is very popular among consumers and has a huge market demand. But swimming crab is very easy to die after leaving the water, and the flavor and mouthfeel of swimming crab after death become worse, and economic value and edible value are greatly reduced. Therefore, how to prolong the live fresh-keeping time of swimming crabs is of great significance for improving the economic value of swimming crabs and is conducive to promoting the development of swimming crabs industry. [0003] Authorized announcement number CN102084836B, the Chinese patent of the authorized announcement date 2012.12.19 discloses a method for keeping Portunus trituberculatus out of wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 徐汉祥张小军韩程程
Owner ZHEJIANG OCEAN UNIV
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