Can you eat the head of a crayfish

The head of the crayfish is not to be eaten.

The circulatory and respiratory and reproductive systems of shrimp are concentrated in the cephalothorax, and the abdomen can be said to be just an organ of locomotion. There are not only many formed eggs in the shrimp head, but also many other crayfish garbage toxins, the head of the lobster is very easy to absorb heavy metals and toxins, because of these reasons, eating the head of the crayfish may cause allergies and acute gastroenteritis, and the head and neck of the lobster are at risk of causing lung flukes.

In addition to the shrimp yellow in the shrimp head can not be eaten, there is a line in the body of the shrimp that cannot be eaten, the black line on the back of the shrimp's abdomen is its intestines, and the inside is of course shrimp poop, which should be removed before cooking. In addition to these, can not eat drunk shrimp, shrimp sashimi and other food, some parasites can shrimp as an intermediate host, take liver fluke as an example, its larvae "cysts" parasitize in the muscles of shrimp, people eat shrimp containing cysts may be infected with liver flukes. People think that they can kill the parasites in the food during high-temperature cooking, but scientific studies have shown that some parasites cannot be killed during the cooking process.

Can you eat shrimp heads?

Many people are concerned about whether the shrimp head can be eaten. Some people say that shrimp heads should actually be analyzed specifically, and some parts can be eaten and some cannot.

The main internal organs of shrimp, such as the heart, gills, stomach, etc., will be in the head of shrimp, and in general, it is easy to enrich more heavy metals, so "it is not recommended to eat shrimp heads".

Here is a special mention of the "yellow" in the shrimp head, which is neither shrimp eggs nor shrimp feces, but the hepatopancreas of crayfish, that is, the liver and pancreas, which are easily contaminated, so it is best not to eat them.

Do shrimp lines have to be removed?

The shrimp line is the digestive tract of the shrimp, and it is theoretically not clean, and there will be more or less residual excrement and undigested food residues, so it is usually recommended to remove it when handling the shrimp.

But again, if you can get through the psychological hurdle, cooked food is worry-free.

Try not to eat crayfish heads.

Oh, and the crayfish head can be eaten and used to make soup.

Crayfish have a strong ability to survive, but if the living environment is very bad, some harmful heavy metal elements in the water are easy to be ingested by crayfish, and then enriched in the head of crayfish, and parasites also like to settle in the head of crayfish, if these parasites are not killed clean, if you can't tell whether the crayfish is clean, then the shrimp head is better to eat less.

First, let's talk about the environment in which crayfish grow. Crayfish is a species that is highly adaptable to the environment. They can survive even in heavily polluted waters.

Therefore, it is recommended that you do not eat crayfish heads. The head of the crayfish is difficult to clean, and most of its internal organs are concentrated on the head and chest, which may have parasites and have serious effects on human health.

Due to the living environment, crayfish heads may contain heavy metals, so even if the crayfish heads are very tasty, it is not recommended to eat them.

The head of crayfish cannot be eaten, what else should I pay attention to when eating crayfish?

1.When eating crayfish, the shrimp line inside the crayfish must be disposed of, because the main function of the shrimp line is to discharge the harmful substances formed during the digestion of the crayfish, so there are many harmful substances in the shrimp line. If not removed, it will cause great harm to human health.

2.When eating crayfish, be sure to cook it at a high temperature. During the growth of crayfish, it is easy to enter the body parasites.

The vitality of these parasites is very tenacious. If these parasites are not completely killed by the heat, people can easily become infected by these parasites after eating, which will have serious effects on human health and it will be very difficult**. Therefore, when eating crayfish, it is important to pay attention to cooking the crayfish through high temperatures.

3.After washing crayfish at home, you must pay attention to the disinfection of your hands. Crayfish is a creature that easily carries parasites.

Therefore, in the process of cleaning crayfish, you must pay attention to your own protection. After cleaning the crayfish, hands must be disinfected with hand sanitizer or sanitizer to prevent hands from coming into contact with the parasite and entering the body through the disinfection channel.

Crayfish tastes good. When eating, you must be careful not to eat crayfish heads, because there are many harmful substances in crayfish heads. When making crayfish, it must be cooked thoroughly over high heat. Only then will you be able to enjoy the crayfish with confidence and boldness.

Some people say that crayfish can't eat their heads, because the heavy metals in the crayfish's heads exceed the standard! We should look at this problem from two aspects, after all, the market popularity of crayfish is now catching up with hot pot and barbecue, and it has become a symbolic representative of China's summer culture, so Lao Zhang will briefly talk about the problem raised by the subject. 1. Can crayfish eat their heads?

Anyone who has made crayfish or raised crayfish knows what is the head structure of crayfish? The head of the crayfish is a sand bladder! The gizzard is the digestive organ of crayfish!

Its function is to grind the organisms or food that come in through the sand into pieces, and then carry out the next step of digestion and absorption, so the crayfish sash sac is not inedible, but it cannot be eaten at all! The position of the crayfish sac is the head of the crayfish, so the head of the crayfish should be cut off, and then the sash sac should be removed, leaving only the shrimp yellow inside. So the answer to question 1 was born:

Crayfish have a gizzard on their head, so the head of the crayfish is inedible! In addition, when everyone cuts the head of the crayfish, there is obviously a particularly strong fishy smell in the gizzard, and I am afraid that many people will not be able to swallow this smell.

2. Is the head of the crayfish really heavy metals exceeding the standard?

We know that the vast majority of organisms in the process of growth, will inevitably ingest a part of heavy metals, these heavy metals can not be absorbed by the organism itself, and often can not be smoothly discharged from the body, so these heavy metals will be precipitated in the body of the organism, and the priority precipitation of heavy metals is the head, which is why some people will say that the crayfish head heavy metals exceed the important reason. But let's think about it carefully, the crayfish we use now are artificially fed, the water of the crayfish shrimp pond has been disinfected by multiple layers, and lime is to be sprinkled for disinfection, and many heavy metals will precipitate when they meet lime, so in fact, the heavy metal content that can be ingested by farmed crayfish is negligible. Besides, the current crayfish breeding cycle is very short, generally in April the first seedling month can be **, even in the winter crayfish is only a winter, so the crayfish body can precipitate the center of the old Zhang dare not say that there is no at all, but it is really not too much, completely negligible.

To sum up, I personally think that the head of crayfish can not be eaten, mainly due to its taste and nutritional value of the trade-off, not because of the crayfish head heavy metals exceed the standard, especially now artificially fed crayfish, the feed is strictly controlled, basically the possibility of exceeding the standard is not large, unless the water source head is polluted by heavy metals.

Eating shrimp heads is equivalent to eating shrimp excrement, semi-digested shrimp food, and more importantly, shrimp heads will enrich heavy metals in the environment.

The heavy metal content varied according to the size and location of the sample, and the trend was that the heavy metal content of the large sample was relatively high, and the increase of heavy metal content in tilapia and vannamei shrimp was positively correlated with their body weight. The content of heavy metals in the viscera of tilapia was significantly higher than that in muscle tissue, and the shrimp head was the main part of the heavy metal enrichment of shrimp.

But there is indeed a very delicious ingredient in the shrimp head, that is, the shrimp eggs, commonly known as "yellow".

When the female shrimp reaches maturity, the head and neck will contain shrimp yellow, so the shrimp with shrimp yellow must be the female shrimp, but without the shrimp yellow, it is not necessarily a male shrimp, and the female shrimp is not mature and the shrimp yellow cannot be seen. Crab roe is common to most people but little knows shrimp roe, and the female shrimp contains shrimp roe on the head and neck of the shrimp before conceiving eggs, commonly known as "red head".

If you want to eat shrimp yellow, you don't want to eat anything else, you have to take your time when you eat, in fact, to remove the factors of heavy metals, the harm of its excrement to the human body is very weak.

In some places, there is a habit of eating shrimp head sauce, and after checking the method, it is true that the whole shrimp head will be used.

The "shrimp head" we often say is the cephalothorax of the shrimp, and the demarcation between the head and the thorax of the shrimp is not obvious, which is collectively called the cephalothorax. The cephalothorax has structures called pericardiac sinuses, including the stomach, liver, heart, excretory organs, antennal glands (also called green glands because they are green), and bladder and excretory holes.

1. The head of the crayfish is not edible, the circulatory and respiratory systems and reproductive systems of the shrimp are concentrated in the cephalothorax, and the abdomen can be said to be just a motor organ. There are not only many formed eggs in the shrimp head, but also many other crayfish garbage toxins, the head of the lobster is very easy to absorb heavy metals and toxins, because of these reasons, eating the head of the crayfish may cause allergies and acute gastroenteritis, and the head and neck of the lobster are at risk of causing lung flukes.

2. When eating crayfish, the shrimp line in the crayfish must be disposed of, because the main function of the shrimp line is to discharge the harmful substances formed in the digestion process of the crayfish, so there are a lot of harmful substances in the shrimp line, if not removed, it is very harmful to human health.

3. When eating crayfish, be sure to cook the crayfish at high temperature. In the process of crayfish growth, it is easy to enter the parasites in its body, the vitality of these parasites is very tenacious, if it is not completely killed by high temperature, people are easily infected by these parasites after eating, which will have a serious impact on human health, and it is particularly difficult to get up. Therefore, when eating crayfish, you must pay attention to the fact that the crayfish must be cooked at high temperatures.

4. After cleaning crayfish at home, you must pay attention to disinfecting your hands. Crayfish is a creature that can easily carry parasites, so in the process of cleaning crayfish, you must pay attention to your own protection, and after cleaning crayfish, you must disinfect your hands with hand sanitizer or disinfectant, so as not to contact your hands with parasites and enter the human body through the digestive tract.

Can you eat the head of a lobster? Many people love to eat lobsters, but because the natural environment for lobster growth and development is filthy, there are some environmental health and safety hazards in eating lobster. Traditional Chinese medicine emphasizes that it is best to eat lobster without having to eat the head.

Although lobster has many physical and mental health safety hazards, many people still can't give up on this delicious taste. The nutrition of the little tiger shrimp is still very worthy of no doubt. Its most critical nutrient is egg white, which is higher than most river shrimp; The fat percentage is very low.

Lobsters also contain minerals such as calcium, sodium, etc.

Therefore, whether it is at home or in a restaurant, you must pay extra attention to hygiene when eating lobster. Eat lobster at home, and after buying it, you should first wash it with cold water, preferably in the water for a day or two. Before cooking, remove the head.

Then use a soft-bristled brush to clean the shrimp heads. In addition, lobsters must be boiled, generally boiled over low heat for 30 minutes, and it is best not to eat more than 10 lobsters each time.

When dining in a restaurant, if you see a lobster that is very bright but has fewer shrimp claws, it is more likely to use "washing shrimp powder", so you should be cautious about eating. Before eating lobster, also look at the body of the lobster, such as the tail curled up, indicating that it is alive before it is put into the pot. If the tail is very straight, it means that it has died long before it is cooked, and the pathogenic bacteria in the body of the dead lobster are easy to exceed the standard, so it is best not to eat it.

The head of the crayfish cannot be eaten, but the head of the large lobster that lives in the sea can be eaten when it is cleaned. Because the water quality of crayfish is poor, the head is the place where toxins are absorbed and processed the most, and it is also the most likely to accumulate pathogenic bacteria and parasites, so they cannot be eaten. The lobster lives in the sea or in artificially cultivated water with better water quality, and the food and head are polluted.

The head of the crayfish cannot be eaten.

The head of the crayfish we usually eat is basically not eaten, and there are 5 reasons for the following:

1. The water quality environment for crayfish to survive is not good.

Whether it is artificially farmed crayfish or wild crayfish, most of them live in some environments where the water quality is not very good, in addition to silt, there may be heavy metals and other pollution, and this kind of lobster is also easy to become a host for parasites such as schistosomiasis and liver flukes. The head of the crayfish is the place where the most toxins are absorbed and processed, and it is also the part where pathogenic bacteria and parasites are most likely to accumulate, so it cannot be eaten.

2. There is dirty excrement on the head of the crayfish.

In addition, the body structure of crayfish is also one of the reasons why we do not eat the head, the body of the crayfish has almost no other organs except for one intestine, and all the organs are concentrated on the head. These include the stomach, liver, heart, a pair of seminal nests and ovaries, excretory organs, antennal glands, and bladder and excretory orifices. In other words, if we eat shrimp heads, we will also eat shrimp excrement, semi-digested shrimp food, shrimp urine and other dirt.

3. The head of the crayfish is difficult to clean.

The head of the crayfish is not good due to the poor growth environment, the inside will be dirty, and it is difficult to brush the inside of the crayfish after feeding it with water for 24 hours in a timely manner, and the head of the crayfish is the dirtiest part of its body, because the place that cannot be washed is still not eaten.

4. There is no meat on the head of the crayfish.

The key thing to eat is shrimp meat, and the crayfish itself is small, and the meat of the whole body is concentrated in the shrimp body, and even if the shrimp head can be eaten, it is also a slag taste, basically no meat, and it is not worth the effort to clean and make food. However, because the shrimp head part is also high in amino acids, and amino acids are good ingredients for freshness after cooking, it is recommended that the shrimp head can be made together when cooking, but the shrimp head should be discarded when eating.

5. Eating the head of a crayfish may cause physical discomfort.

First, crayfish have gills on their heads, which will exchange with water from the outside world, which may be contaminated with a lot of bacteria and other substances, and eating them is easy to cause gastrointestinal discomfort; Second, there may be parasites or parasite eggs in the crayfish head, and parasite infections are likely to occur if not handled properly; The third is that there is a liver in the head of the crayfish, and the liver may contain more heavy metal ions, if you accidentally eat too much, it will lead to the accumulation of more heavy metal ions in the human body, which is not good for your health.