According to popular science China report: cold jellyfish is refreshing and appetizing, and is a favorite of many people. However, although jellyfish are harmless, they are still a terrible creature for those living in coastal areas.
If you are stung by it, it will be uncomfortable for several days at a minimum, and it may be fatal in severe cases. Why are jellyfish so "poisonous"? So what about nutrition after being made into food?
01
What kind of creature is jellyfish?
jellyfish is an invertebrate mollusk , which belongs to jellyfish , feeds on plankton, small crustaceans, polychaetes and even small fish. It mainly lives in coastal areas of our country, and is distributed from Guangdong, , Hainan Island, , to Liaoning.
Image source: Chinese Food Ingredients Table 6 Edition Volume 2
Jellyfish has a round umbrella-shaped or bell-shaped body, with contactors and wrists. The outer umbrella has a smooth surface, a thick and hard layer of medium glue, and the large jellyfish umbrella can reach 25-60 cm in diameter; the contactor is a digestive organ and a weapon for hunting. It has many poisonous silks and can ejaculate venom.
Image source: Reference
02
What happens if you are stung by a jellyfish?
The appearance of jellyfish seems soft and cute, and harmless, but it is a "toxic killer".
From June to October every year, jellyfish will float to the water surface to mate and lay eggs. These months are also the hottest times. Many people will go to the beach to play, because jellyfish are transparent in the water and are not easily discovered, so they are easily stung.
In August 2015, a 4-year-old girl died of a jellyfish stung at the Xiajiahezi Beach Beach in Dalian City, Liaoning Province. The girl's mother was stung in the leg because she kicked a jellyfish.
jellyfish is very toxic. Its tentacles are covered with poisonous silk, which can ejaculate venom. The toxic ingredient is jellyfish toxin. When the human body contacts the tentacles of the jellyfish, the prickly silk sac will immediately release a large amount of jellyfish toxins, causing the body to experience symptoms of poisoning, such as contact dermatitis , itching and pain, skin congestion, and even local necrosis. The symptoms of itching and pain can last for 10-20 days, and in severe cases, they may not recover for several months.
is not just jellyfish, many jellyfish are not easy to mess with. The picture of the gallery copyright, without authorization to reproduce
If severely stung by a jellyfish, it will also cause systemic symptoms, such as cough, chest tightness , asthma , exercise disorders, heart failure , vomiting, diarrhea, liver and kidney function damage, and more serious symptoms will lead to allergic shock.
Statistics in my country show that in the past 20 years, there have been about 2,200 jellyfish stings in coastal tourist areas, of which 13 died, all of which were all anaphylactic shock after stings.
If the cardiovascular system is damaged, fainting and shock may occur in just a few minutes or even 1 minute. The skin changes from pale to cyanosis, which can lead to death in a short period of time.
03
What should I do if I get stung by a jellyfish?
jellyfish stung without special medicine can be treated. If you are unfortunately stung, measures should be taken to relieve it immediately.
You can use tweezers to remove the jellyfish prickly sac, and then rinse the stinging area with sea water. It is not allowed to rinse it with fresh water because the osmotic pressure of fresh water is low, which can cause the prickly sac to burst and release toxins, aggravate the symptoms. Do not use vinegar to clean it, otherwise it may aggravate the pain, and do not squeeze the sting with your hands.
After simple treatment, you must go to the hospital for corresponding treatment immediately.
04
What are the nutritional properties of jellyfish?
jellyfish are edible, and our country was the first country to eat and utilize jellyfish. The traditional processing method is to use lime, alum, to soak it, then squeeze out the moisture, wash and marinate it, so that it becomes a commonly eaten jellyfish product.
The umbrella cover of the jellyfish will turn into a round translucent skin after treatment, that is, jellyfish skin ; the shape of the mouth and wrist remains unchanged, and it is called jellyfish head .
The most common dishes are cold jellyfish shreds (shredded from jellyfish skin), cold jellyfish head, which has a crispy taste and is a favorite of many people.
picture gallery copyright pictures, unauthorized reprint
jellyfish skin and jellyfish head are both low-fat, low- cholesterol foods. Even people with obesity and dyslipidemia can eat with confidence.
and the mineral calcium content of jellyfish is relatively prominent. The calcium content of jellyfish skin and jellyfish head is 150 mg/100 grams and 120 mg/100 grams respectively, which is considered relatively excellent among aquatic products. If you eat 100 grams of cold jellyfish shreds, it can meet 19% of the daily calcium demand, which is still good.
jellyfish silk also has a low purine content. The total purine content is only 9 mg/100g. It is a low purine food for . People with high uric acid and gout can eat it with confidence.
In addition, it is necessary to remind you: Don’t think that jellyfish are rich in collagen and can beautify the skin after taking it.
So, don’t expect to take jellyfish to beautify, it can supplement calcium, and the taste is also good, very flexible.
Summary:
jellyfish tastes delicious, but if you encounter it on the beach, you have to stay away from it. Don’t catch it. Even if you are dead, don't touch the jellyfish, be careful to be stung by it.
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