Attention, foodies who love crayfish, there are many parasites in crayfish. Are you still eating it? You must understand how to eat cleanly!

Summer is here, the season for eating crayfish and drinking beer, but crayfish are full of bacteria and parasites.

So how can we eat them with confidence?

Generally speaking, parasites can be killed as long as they are cooked and steamed thoroughly. There will be no problem if the temperature is around 70℃. Ruan Guangfeng also explained that it is usually recommended to eat it before it is fully heated and cooked to kill parasites. As for the specific temperature required, it depends on the specific type of parasite, but whether it is 100 degrees or 70 degrees, home cooking is Very easy to reach.

On the contrary, the "drunken shrimp" and "drunken crab" eaten by Xiaoxia in this video are made by putting live shrimps and crabs into wine to "drunk them" and then dipping them in sauce to eat. If you eat raw food, you will inevitably get infected.

So foodies can eat crayfish with confidence!

The head of crayfish is the place that absorbs the most dirt, so it cannot be eaten. Crayfish that have been left overnight cannot be eaten.

Let me teach you a way to judge whether crayfish is fresh. Fresh crayfish will be slightly curved after being cooked, and the meat will be firm. Stale crayfish will have a straight body.

Almost all the organs in the crayfish's body are concentrated in the head, including the stomach, heart, digestive and excretory organs, etc., which is the place where the most toxins are absorbed and processed. Shrimp heads will be contaminated by heavy metals in the environment. They will also be contaminated by parasites in the water environment and become hosts for parasites such as schistosomiasis, liver flukes, and paragonimiasis.

Although parasitic diseases are scary, prevention is relatively simple. The most effective way is to fully steam and cook it before eating it. Generally, it needs to be heated and simmered for more than 20 minutes to kill the parasites in the crayfish.

Lobster heads tend to absorb heavy metals and bacteria, so it is best to remove the heads when eating. To cook crayfish by yourself, it is recommended to soak them in water for 2 to 3 hours, wash them clean, and then cook them at high temperature before eating.

In order to meet the customer flow, some informal shops process crayfish hastily and do not have enough heating time. Eating such crayfish is not good. The risk of parasitic infection is greatly increased. Therefore, when dining out to eat crayfish, it is best to choose a more formal place.

Do crayfish really have parasites that cannot be killed by high temperatures?

Any aquatic creature has parasites. For us, the most familiar parasites on crayfish are schistosomiasis, roundworms and nematodes. Theoretically speaking. There are no freshwater cultured fish and shrimps that cannot be killed. Killing these parasites depends on two conditions, the cooking temperature and the length of cooking time.

Between 70° and 100°, except for nematodes, other parasites can be killed within 1 minute. Only nematodes are special. To kill nematodes, the temperature must reach above 70°, and the cooking time must reach about 10 minutes. Therefore, when cooking crayfish, it is best to have a higher temperature and a longer cooking time, so that you can eat it with confidence.

Most parasitic infections are contracted through eating something (schistosomiasis is an exception). Therefore, friends should pay attention to eating as little raw or half-cooked food as possible. There is an obvious example. Japanese food likes to eat sashimi. Therefore, there are many Japanese people infected with parasites. For us, although drunken shrimp is It tastes good, but it has not been cooked and sterilized at high temperatures, so the chance of being infected with parasites is very high. Do you think there are many people eating drunken shrimp in our country?

Of course, there is no need to panic after being infected with parasites. There are special parasite-killing agents, such as Intestinal Chongqing. But if you can't change your habit of eating raw food, medication will be useless.

So you must watch your mouth, especially the parasitic snails in the body, which can only be said to be fearful.

Forgive me for being uninvited. I couldn’t help but want to answer this question when I saw crayfish. In my personal opinion, there are indeed parasites in crayfish, but they are not as common as rumors. Even high temperatures can’t kill them. As long as we pay attention to the following small details, we can say goodbye to these parasites completely; allowing us to enjoy all kinds of delicious crayfish in the hot summer and stay away from all kinds of appalling parasites.

Everyone thinks that crayfish are dirty because people have a big misunderstanding about their home. They think that crayfish live in wastewater and sewage and eat everything. No. Is it true that crayfish grown in such an environment are very dirty and contain a large number of parasites and bacteria in their bodies? When buying crayfish, we should buy them from regular channels and try to avoid eating crayfish from smelly ditches; As the status of crayfish on our dining tables increases year by year, the existing wild crayfish can no longer meet people's growing demand. Many crayfish on the market are now artificially cultivated on a large scale. Compared with the living environment in the wild, The quality of the water and the food of the crayfish are greatly guaranteed. After the living environment becomes better, the bacteria in the crayfish will naturally decrease. Therefore, when buying crayfish, we try to buy those that are artificially cultured. The dirt on the crayfish can tell the quality of the growth environment. Crayfish cultured in sewage must have a lot of dirt, which can be distinguished at a glance.

Take our carefully selected crayfish home and place them in a basin of clear water and let them sit for 2-3 hours. If necessary, change the water before soaking if necessary. After soaking, use a brush to brush off the dirt on the crayfish, mainly concentrating on the abdomen and claws. At the same time, do not miss the important part of the shrimp back; after scrubbing, use scissors to cut off the head of the crayfish and remove it. To remove the dirt in the shrimp shell, be careful not to cut off the entire head, but to keep the shrimp shell, because there are still delicious shrimps inside that can be eaten. After removing the shrimp head, remove the shrimp tail and pull out the shrimp thread. After the first treatment, many harmful substances in the crayfish body have been removed by us.

After washing the processed crayfish with clean water, you can blanch it or fry it in an oil pan. As for the parasites in the crayfish, they will not survive the high-temperature cooking process. The parasites will all die. The appropriate time is 40 minutes. Cook for as long as possible. After the parasites are completely dead, you can start enjoying the food.

Speaking of crayfish, I believe everyone is familiar with it. Now crayfish has been put on the dining table and has become a favorite dish. There are many online articles saying that crayfish Growing in smelly ditches, the environment is very dirty. Eating too much can easily cause Harvest disease, which is life-threatening. I was so scared that my face turned green. So do crayfish really have parasites that cannot be killed by high temperatures?

I bought three live crayfish experimental samples from three different locations. After cleaning, they were heated in water at 40°C, 50°C, and 60°C for ten minutes respectively. The samples were taken out and made into glass. The slice was placed under a microscope for observation. The experimental results showed that under 40°C conditions, active oval eggs could still be observed under the microscope, but the number was significantly reduced compared to before heating. In the sample liquid heated at 50°C and 60°C, mobile eggs were found uniformly.

Currently, most of the crayfish eaten by citizens come from artificial breeding. Compared with wild crayfish, the environment is cleaner. However, the artificial breeding environment will also cause differences in crayfish. , for example, water bodies with a lot of algae or water bodies that are farmed with feed may lead to more crayfish crops. It is not recommended for everyone to eat wild crayfish.

If you are cooking by yourself, wash the crayfish first and raise them in clean water. Keep changing the water until the water is clean and clear. When cooking, the temperature of the crayfish needs to reach Above 100°C and continued for a period of time to achieve the effect of high temperature disinfection.

The head of crayfish is the place that absorbs the most dirt, so it cannot be eaten. Crayfish that have been left overnight cannot be eaten.

Let me teach you a way to judge whether the crayfish is fresh. Fresh crayfish will be slightly curved after being cooked, and the meat will be firm. Stale crayfish will have a straight body.

So crayfish do have parasites, but cooking them thoroughly can kill the parasites. There is no necessary connection between eating crayfish and Harvest disease, but you can’t eat too much at one time.

I just want to know, what is absolutely safe to eat in China?

If you eat fish, aren’t you afraid of feeding it with medicine?

Pork, and clenbuterol.

Which animal is fed neither feed nor medicine?

What vegetables do not use any pesticides?

We ourselves are in the agricultural supplies business.

You said your vegetables are purely natural and non-GMO?

Do you believe it? Whether you believe it or not, I don’t believe it anyway.

Well, it should be safe if you grow your own vegetables and eat them yourself.

As for oil, can you guarantee that the oil you buy does not have any additives? Are they made from pure natural melon seeds?

So, nothing needs to be taken seriously.

Crayfish are not as scary as everyone thinks.

There are parasites in crayfish, but they are usually almost killed after cooking.

You can eat them with confidence.

Some people say that crayfish are very dirty,

Yes, they are indeed dirty before being washed, but raising crayfish requires very high requirements,

The first is water quality. If the water is too dirty, crayfish will not survive at all.

So, crayfish are much cleaner than we think?

Have you ever seen eating crayfish? Someone who died?

At best, it’s just an allergy.

So, everything should be done in moderation, and the same goes for eating.

If you are really greedy, it is perfectly fine to eat some occasionally.

Of course, we cannot and cannot eat this every day.

There is no need to embarrass yourself too much when you live your whole life. Eat whatever you want.

Summer is here in a blink of an eye

What to eat in this beautiful season?

Of course it’s crayfish!

Sitting in a food stall

Eating crayfish

Drinking beer

Talking about ideals and Isn't life infinitely beautiful?

Recently, an article titled

"Don't buy any more, it's all bugs, tell your family!"

The video went viral

The video showed

“A woman ate unclean crayfish

and developed fever, coughing up blood and other symptoms,

Finally diagnosed as paragonimiasis"

Put the crayfish

into the ultrasonic cleaning machine for cleaning

Then we found small bugs in the water

In addition, through the microscope lens

it was also found that there are many active parasites

also attached to the body of the crayfish

As soon as the news came out

it aroused many people’s attention and questions

What kind of disease is paragonimiasis?

Are there really paragonimiasis in crayfish bodies?

Let’s talk with you in depth today

Paragonimiasis is a disease mainly caused by paragonimiasis infection. When a human body is infected with paragonimiasis, the paragonimiasis will shuttle through the body and cause damage to organs, leading to fever, inflammation and related symptoms of organ damage. If the condition is severe, when paragonimiasis parasitizes in the lungs, symptoms related to lung damage will also occur, such as chest tightness and coughing up rust-colored sputum.

To confirm that you are infected with Paragonimus, you need to find Paragonimus eggs in the sputum picture, or do a pathological biopsy to find the worms or eggs.

People are infected with paragonimiasis after eating it. Paragonimiasis does not directly spread from person to person. The main reason is that paragonimiasis needs to develop in snails and crustaceans (level 2 intermediate hosts) before it can become infective. You will not be infected with paragonimiasis by eating snails. Shrimp and crabs are more susceptible to infection.

The bugs found in the video are definitely not paragonimiasis and are probably bugs in the water.

Paragonimiasis mainly appears as metacercariae in the bodies of shrimps and crabs (after the larvae of Paragonimus invade the bodies of shrimps and crabs, the worms will be gradually wrapped in secretions to form a closed sac, in which the larvae reside) It exists and will not swim in the water at all. It will not be easily cleaned by a microwave cleaning machine, and it will not be visible to your naked eyes.

At the same time, so far there is no conclusive evidence that paragonimiasis exists in crayfish.

How to prevent paragonimiasis in life?

It is worth noting that the human body does not have immunity to paragonimiasis, and it is possible to be infected as long as it eats metacercariae containing paragonimiasis. And even if you have recovered, you may be infected the next time you eat metacercariae. The more you ingest, the greater the damage to your organs.

The prevention methods are as follows:

01

Refuse to eat raw shrimp, crab and other seafood. Pay attention to the source of seafood, avoid eating any food of unknown origin, and refuse to eat unreliable foods such as drunken shrimp, drunken crab, and bad crab.

02

When eating aquatic products, be sure to heat them thoroughly.

03

Kitchen knives, chopping boards and other kitchen utensils must be separated from raw and cooked to avoid cross-infection of eggs or larvae.

04

Pay attention to personal hygiene and wash your hands before meals and after using the toilet. Some insect eggs may be attached to clothes or door handles and other items.

Although crayfish do not transmit paragonimiasis under normal circumstances, some experiments have shown that some parasites or eggs do exist in some crayfish, so you need to pay attention to the following:

Be careful when buying crayfish: Choose crayfish sold in artificial and legal farms. Do not buy crayfish from unknown sources for cheap. Be careful of potential harm.

Safe handling of crayfish: It is recommended to keep the crayfish in clean water for 1-2 days to allow it to spit out the sediment and other impurities in its body. To clean crayfish, please first cut off the gills and thin claws, then remove the black gut on the back of the shrimp body, and use a small brush to scrub the shrimp shell clean.

Must be completely heated: When cooking crayfish, the cooking temperature must reach 100°C, and the heating must be continued for more than 20 minutes to make it completely cooked. If the crayfish is stored in the refrigerator, the heating time should be appropriately extended. The shrimp shell will harden after being refrigerated, and it will take longer to mature.

Choose the right restaurant: It is recommended to choose medium and large restaurants with good reputation to ensure food safety.

In addition, the "Dietary Guidelines for Chinese Residents" recommends a daily intake of 40g-75g of aquatic products, and it is recommended to eat crayfish no more than twice a week.

In summary

The bugs seen in the video

are not "paragonimus" at all

It is likely to be bugs in the water

And

So far there is no conclusive evidence

that there is paragonimiasis in crayfish

So

Don’t panic too much!

This is called wanting to eat but fearing death, and then just follow what others say. So many people on the Internet say that crayfish are poisonous in various ways. I have been eating crayfish for 17 years. Crayfish are not worth eating until now. It feels so good to still be alive and happy and healthy. Many people refuse to eat sour crayfish because they are expensive, can’t afford it, can’t cook it, and are sour. At the most expensive time, you can buy it for 45 kilograms and burn it yourself. Once you burn it, it will cost you at least a dozen kilograms. I used to catch a lot of crayfish in Zhejiang. To be honest, wild crayfish are not as delicious as artificially raised crayfish. This is true, cultured ones are difficult to wash and are thin, while artificial ones are easy to clean and handle.

Speaking of crayfish, I believe everyone is familiar with it. Nowadays, crayfish has been put on the dining table and has become a favorite dish. There are many online articles saying that crayfish grow in smelly ditches. The environment is very dirty. Eating too much can easily cause Harvest disease, which is life-threatening. I was so scared that my face turned green. So do crayfish really have parasites that cannot be killed by high temperatures?

A university laboratory once conducted an experiment.

Three live crayfish experimental samples were purchased from three different locations. After cleaning, they were heated at 40°C and 50°C respectively. .Heat in water at 60°C for ten minutes, take out the sample, make it into a glass slide, and observe it under a microscope. The experimental results show that under the conditions of 40°C, active oval-shaped eggs can still be observed under the microscope, but the Compared with before heating, it is significantly reduced. In the sample liquid heated at 50°C and 60°C, mobile eggs were found uniformly.

Currently, most of the crayfish eaten by citizens come from artificial breeding. Compared with wild crayfish, the environment is cleaner. However, the artificial breeding environment will also cause differences in crayfish, such as more algae or The use of feed-cultured water bodies may result in more crayfish attached crops. It is not recommended for everyone to eat wild crayfish.

How to make eating crayfish safer?

If you cook by yourself, wash the crayfish first and culture them in clean water. Keep changing the water until the water is clean and clear. When cooking, the temperature of the crayfish needs to reach above 100°C and continue to cook. After a period of time, the effect of high-temperature disinfection is achieved.

The head of crayfish is the place that absorbs the most dirt, so it cannot be eaten. Crayfish that have been left overnight cannot be eaten.

Let me teach you a way to judge whether the crayfish is fresh. Fresh crayfish will be slightly curved after being cooked, and the meat will be firm. Stale crayfish will have a straight body.

So crayfish do have parasites, but they can be killed by cooking them thoroughly. There is no necessary connection between eating crayfish and Harvest disease, but you can’t eat too much at one time.

Speaking of crayfish, I believe everyone is familiar with it. Nowadays, crayfish has been put on the dining table and has become a favorite dish. There are many online articles saying that crayfish grow in smelly ditches. The environment is very dirty. Eating too much can easily cause Harvest disease, which is life-threatening. I was so scared that my face turned green. So do crayfish really have parasites that cannot be killed by high temperatures?

A university laboratory once conducted an experiment

Three live crayfish experimental samples were purchased from three different locations. After cleaning, they were Heat water at 40°C, 50°C, and 60°C for ten minutes, take out the sample, make it into a glass slide, and observe it under a microscope. The experimental results show that under the conditions of 40°C, the sample can still be observed under the microscope. The oval-shaped eggs are significantly reduced compared to before heating. In the sample liquid heated at 50°C and 60°C, mobile eggs were found uniformly.

Currently, most of the crayfish eaten by citizens come from artificial breeding. Compared with wild crayfish, the environment is cleaner. However, the artificial breeding environment will also cause differences in crayfish, such as more algae or The use of feed-cultured water bodies may result in more crayfish attached crops. It is not recommended for everyone to eat wild crayfish.

How to make eating crayfish safer?

If you cook by yourself, wash the crayfish first and culture them in clean water. Keep changing the water until the water is clean and clear. When cooking, the temperature of the crayfish needs to reach above 100°C and continue to cook. After a period of time, the effect of high-temperature disinfection is achieved.

The head of crayfish is the place that absorbs the most dirt, so it cannot be eaten. Crayfish that have been left overnight cannot be eaten.

Let me teach you a way to judge whether crayfish is fresh. Fresh crayfish will be slightly curved after being cooked, and the meat will be firm. Stale crayfish will have a straight body.

So crayfish do have parasites, but cooking them thoroughly can kill the parasites. There is no inevitable connection between eating crayfish and Harvest disease, but you can’t eat too much at one time.