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Method for keeping crabs captured from sea alive without water

A technology for keeping alive without water and sea crabs, applied in climate change adaptation, oxygen preparation, animal husbandry, etc., can solve problems such as easy decomposition, poor stability of sodium percarbonate, death, etc., to improve survival rate and survival time, Improve the utilization rate and use effect, prolong the effect of survival time

Active Publication Date: 2015-09-09
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This fresh-keeping method has the following disadvantages: directly place swimming crabs in seawater at 2-5°C, the temperature difference is too large, the crabs cannot adapt to the sudden environment, they will have broken legs or even die, reducing the survival rate; adding vitamin C in seawater It 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; the oxygenator is sodium percarbonate, which has poor stability and is prone to occur during transportation and use Decomposition reduces the content of active oxygen, and sodium percarbonate releases oxygen too fast, resulting in waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Breeding: Bind the large claws of the captured live sea crabs (Portunus trituberculatus) with plastic ropes, and place them in seawater with 4% seawater mass-preserving agent for one day. The composition is composed of the following mass percentages: 10% magnesium sulfate, 3.5% potassium chloride, 6.5% gypsum, 15% rosmarinic acid, 0.0065% aldosterone, and the balance is water.

[0023] (2) Graded cooling anesthesia: first soak live sea crabs in 8°C seawater for 2 minutes, and then put them in 2°C seawater for 2 minutes.

[0024] (3) Packaging: First spread a layer of oxygen enhancer with a thickness of 2cm on the bottom of the packing box, then put a sponge saturated with water on the oxygen enhancer, arrange a layer of live sea crabs on the sponge, and then Put a sponge that absorbs water, arrange a layer of live sea crabs, put a sponge that absorbs water, and put two layers of Portunus trituberculatus in the box, and finally seal the box and store it in an environ...

Embodiment 2

[0026] (1) Breeding: After the big claws of the captured live sea crabs (flower crabs) are bound with rubber bands, they are placed in seawater with 3% seawater mass-preserving agent for temporary storage for 2 days. Component composition in percent: 5% magnesium sulfate, 1.5% potassium chloride, 2.5% gypsum, 7.5% rosmarinic acid, 0.0025% aldosterone, and the balance is water.

[0027] (2) Graded cooling anesthesia: first soak live sea crabs in 7°C seawater for 1 min, and then soak in 1°C sea water for 1 min.

[0028] (3) Packing: First spread a layer of oxygen enhancer with a thickness of 1cm on the bottom of the packing box, then put a sponge that absorbs water on the oxygen enhancer, and arrange a layer of live sea crabs on the sponge, and then Put a sponge that absorbs water, arrange a layer of live sea crabs, put a sponge that absorbs water, and put two layers of flower crabs in the packing box. Finally, seal the box and store it in an environment of 2°C. Yes, the oxygen...

Embodiment 3

[0030] (1) Breeding: Bind the large claws of the captured live sea crabs (Scylla serrata) with plastic ropes, and place them in seawater with 3.5% seawater quality preservation agent for temporary storage for 1.5 days. It consists of the following components by mass percentage: 6% magnesium sulfate, 3% potassium chloride, 4% gypsum, 10% rosmarinic acid, 0.005% aldosterone, and the balance is water.

[0031] (2) Graded cooling anesthesia: first soak live crabs in seawater at 7.5°C for 1.5 minutes, and then put them in seawater at 1.5°C for 1.5 minutes.

[0032] (3) Packaging: First spread a layer of oxygen enhancer with a thickness of 1.2cm on the bottom of the packing box, then put a sponge saturated with water on the oxygen enhancer, and arrange a layer of live sea crabs on the sponge, Then put a sponge that is saturated with water, arrange a layer of live sea crabs, put a sponge that is saturated with water, and put two layers of mud crabs in the box, and finally seal the bo...

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Abstract

The invention discloses a method for keeping crabs captured from the sea alive without water. The method comprises the following steps: (1) accumulating and culturing the crabs: bundling large pincers of captured live sea crabs with plastic ropes or rubber strings, and placing the live sea crabs of which the pincers are bundled in seawater added with a live-keeping agent for 1-2 days; (2) cooling and anaesthetizing the live sea crabs in seawater in a classifying manner: firstly placing the live sea crabs which are accumulated and cultured in the seawater of 7-8 DEG C, soaking the live sea crabs in the seawater of 7-8 DEG C for 1-2 minutes, then placing the live sea crabs in the seawater of 1-2 DEG C, and soaking the live sea crabs in the seawater of 1-2 DEG C for 1-2 minutes; (3) packaging the live sea crabs: firstly paving a layer of oxygenates on the bottom of a packaging box, then putting a waterishlogged sponge on the oxygenates, arranging a layer of the live sea crabs on the sponge, then putting another waterishlogged sponge, arranging a layer of the live sea crabs, putting another waterishlogged sponge on the on the oxygenates, filling two layers of swimming crabs altogether in the packaging box, finally sealing the packaging box, and placing the sealed packaging box in the environment of 2-5 DEG C for preservation. The method disclosed by the invention is convenient to operate and low in cost, the survival rate of the crabs captured from the sea can be effectively increased, the survival time of the crabs captured from the sea can be effectively prolonged, the long-distance long-time live-keeping transportation of the crabs captured from the sea is realized in a waterless packaging form, the economic benefits are notable, and the method is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of aquatic products circulation, in particular to a method for keeping sea crabs alive without water. Background technique [0002] Crabs caught in the sea, such as portunus, blue crabs, flower crabs, etc., are popular with consumers due to their unique flavor and rich nutrition, and the market demand is large. However, sea crabs have a short survival time due to environmental changes after being caught, are very easy to die and deteriorate, have poor taste and flavor, and greatly reduce their edible and economic value. Therefore, prolonging the survival time of sea crabs can significantly improve the edible and economic value of sea crabs. [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 water, including the following steps: (1) Purifying Portunus trituberculatus in seawat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00C01B13/02
CPCY02A40/81
Inventor 张小军龙举李佩佩严忠雍
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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