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Crabs can live for about 3-5 days if they are delivered.
Fresh live crabs are transported by express delivery, and their survival rate is closely related to packaging, transportation environment, crab freshness, etc., generally good express companies, when delivering fresh seafood like crabs, will take similar packaging to the refrigerator cold room environment for transportation, and the whole journey is almost still cold chain preparation, so that most of the express crabs can live for 3-5 days during transportation, but because there is no food given during the express delivery, the crabs will be hungry and thin during transportation, and should be eaten as soon as possible.
Live crab delivery by courier.
1. Find a reputable courier company.
2. Give the crab to the courier, and after confirming the cost, the courier will take the following methods to pack the crab.
3. Tie the crab claws and crab legs with cotton thread or thin cotton rope.
4. Then put it into the foam box, put the ice bag inside, and the soft filler is fixed, which can also be used as a heat insulation to prevent the ice from melting.
5. Put it into a carton and pack it for express delivery, pay attention to leave a good ventilation hole to ensure the breathing and freshness of the crab.
6. In the case of short distances, the crab express is generally a special line for the distribution of fresh cold chain vehicles, and the long-distance is an air and air route to ensure that the crabs arrive at their destinations as soon as possible and the consignee can eat the fresh crabs as soon as possible.
When choosing a courier company, you should confirm the kind of express delivery point that has a fresh line, a special foam fuse box and ice pack packaging equipment, so that the express crabs will be effectively distributed and preserved, so as to ensure the fresh food rate of the crabs.
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1. Open the air transport box, put the bundled hairy crabs neatly into the bottom of the packing box (neatly put it just to put more), and add dry ice in the middle.
2 Layer by layer, each layer with dry ice.
3 Close the lid of the box and tie it with tape and paper.
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For long-distance transportation, it is advisable to store in a tight basket, first spread a layer of mud at the bottom of the basket, put some sesame seeds and beaten eggs, and then lay the live crabs flat one by one, and then cover them to protect the shade. If you put some absorbent sponge and styrofoam in the crab school, the effect is better, and the crab can generally survive for 4-5 days.
For the transportation of crab seeds, people are accustomed to use nylon silk bags to put them in bamboo baskets or plastic foam boxes, and lack the necessary preparation for excreting crab seed feces in advance, thus reducing the survival rate. The scientific method is: first, to be transported in 5 10 days, the temperature difference should not exceed 2, but also need to be ventilated, keep moist and prevent crab activities;
The second is to put the crab seeds to be transported in the crab cage or the cage that can be sealed before shipment, and then put the crab pot or cage into the river or micro-flowing water for more than 4 hours of hoisting, and then ship after the feces in the intestine are emptied, so that the survival rate of transportation within 24 hours can reach more than 95 (high up to 98 or more).
When transporting adult crabs, try to maintain the original temperature, and the temperature difference should not exceed 5 (if necessary, use ice to cool down). Soak the bag for short-distance transportation, and be careful to avoid squeezing on the way; Long-distance transportation should be carried in as short a time as possible and stored in well-ventilated bamboo baskets.
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It can't be said that you can't eat it when you die, but it should be noted that after death, crabs are easy to deteriorate due to high protein content, generally more than 8 hours, and soon after death, crabs will release glands and digestive enzymes in the intestines.
Loosening will decompose the crab meat. It leads to poor taste and is easy to breed bacteria, which can quickly decompose crab protein and cadaverine.
and histamine increase rapidly, cadaverine and histamine have certain toxic and sensitizing effects, and can cause poisoning or allergies after consumption. or prone to diarrhea, vomiting, abdominal pain, etc.
If the time of death is not known, it is generally decided whether it is suitable for consumption according to whether there is a more obvious ammonia smell. Glad to this question, swimming crabs can make many kinds of delicious dishes, swimming crabs belong to sea crabs.
Because the growing environment is different from that of freshwater crabs, swimming crabs and all sea crabs can be eaten even if they die, as long as they are not long, they are not bad or smelly. Freshwater crabs are like hairy crabs, hairy crabs cannot be eaten when they die, and can cause food poisoning.
Crab meat is high in protein.
River crabs eat rotten food, there are many bacteria, and the protein changes produced by crabs after death are easily affected by bacteria, which can easily cause food poisoning! The sea water is salty, and there are relatively few bacteria that can live, so the crab is dead, and it can be eaten as long as it does not spoil!
It is best not to eat swimming crabs after they die, because decaying substances such as crabs like to eat animal carcasses, so they often have bacteria or other harmful substances in their stomachs, and once they die, these bacteria will multiply in large numbers, and crabs contain more histidine in their bodies.
Histidine will be broken down quickly, and as the crab dies after death, the longer the time, the ammonium group will also accumulate in the body, and histamine will also cause poisoning when it accumulates to a certain extent. Can You Eat Dead Swimming Crabs How to Handle Swimming Crabs Crabs are a common seafood ingredient.
There are many types of crabs, and we are familiar with flower crabs.
Blue crabs and swimming crabs and so on. For many people living in coastal areas, it is easy to eat relatively fresh crabs, but after being transported inland, many crabs start to die. Can you eat dead swimming crabs?
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1. Since the river crab relies on its gills to breathe oxygen in the water, it is necessary to keep the body of the river crab moist during transportation. Bi imitated the loading tools with clean river water before shipment, so that the net bag inland river crabs were in a humid environment. Attention should be paid to gentle handling during shipment, and throwing and squeezing are prohibited.
Foam box, around the killing of a few holes, so that the river crab has enough oxygen to breathe, generally in the temperature of about 20, the river crab can maintain 1 week of not dead or rarely die.
2. Whether it is long-distance or short-distance transportation, after the commercial crab is transported to the sales area, it is necessary to open the packaging bag immediately**, if it is true that the lease can not be sold in time, the crab should be scattered in the cement pool or large barrel, it is best to pour water to keep the crab body moist, and do not concentrate a large number of river crabs in the water container to prevent a large number of river crabs from suffocating due to high density and lack of oxygen in the water. According to the provisions of the Fish Food Sanitation Law, river crabs should be fresh**, and those who have died are not allowed to be sold and processed. Operators should comply with this provision.
Consumers should learn to identify the quality of river crabs, and do not buy dead, rotten and inferior crabs.
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About 3-5 days, the chain bends thickly.
Now is the time to eat hairy crabs, hairy crabs can be expressed, generally if they are preserved when transporting hairy crabs, then they can survive for about 3-5 days. Noisy.
However, if the hairy crab is crushed during transportation, it may cause the hairy crab to die during transportation.
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What happens when a hairy crab dies in transit? If the hairy crab is suspected to be dead during transportation, it may be caused by lack of oxygen, so it is necessary to increase oxygen.
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Hairy crabs. Now that Ming Yin will die during transportation, what is the situation? As some constraints are long-distance transportation. Therefore, there will be a lack of oxygen. Some estimates also cause the temperature to be too high. So the hairy crabs will die.
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It should be caused by lack of oxygen, or maybe it was too tired and sleepy after a long journey, or maybe it was scared to death.
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The freezer is cold, so it's bound to die. Do not freeze the crab, can be placed in the refrigerator room, and the temperature should not be too low, it is best to cover the surface of the crab with moist gauze, which can prolong the crab life.
Crabs can be frozen for a short time, because the freezing process will cause crabs to deteriorate due to dehydration for too long, crab meat and crab paste have a high protein content, so after deterioration, mold and yeast, bacillus, Pseudomonas and other bacteria will breed, and release a certain amount of hydrogen sulfide, too much practical will affect health.
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Express hairy crabs, if properly packaged, can survive on the way for about 3-5 days. However, there are various uncertainties on the way to the delivery, and there is also the possibility of receiving dead hairy crabs.
Express hairy crab how to pack and live for a long time:
1. Two-layer packaging: express hairy crabs, there must be a relatively stable packaging to avoid hairy crabs being crushed, it is generally recommended to put the tied hairy crabs into the foam box first, and then put a cardboard box of appropriate size outside.
2. Reserve ventilation holes: hairy crabs still have to breathe after coming out of the water, so if you want the hairy crabs of express delivery to live longer, you should put a few ventilation holes on the foam box and carton.
3. Use ice bags: In order to avoid the death of hairy crabs due to high temperature during the express delivery process, pay attention to placing ice bags in the foam box, and fix the ice bags with tape to avoid the ice bags crushing the hairy crabs during transportation. Be careful not to use unpackaged ice cubes or put water in the box.
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BAI transportation method of live crabs: DU1) Short-distance transportation: It can be transported in a soaked pu pack. DAO in transit, to avoid.
back to pressure and sun exposure. 2) Long distances.
Answer: Transportation: It should be packed in a tight basket. Spread a layer of mud on the bottom of the basket, put some sesame seeds and beaten eggs, and then lay the live crabs flat one by one, and then cover them to protect the shade.
If you put some absorbent sponge or styrofoam in the crab school, the effect is better, and it can generally make the crab survive for 4 to 5 days. (Reference.)
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