When will the crabs be on the market? What are the varieties that can't be eaten?

In a few days, crabs will be on the market in large quantities, and you can also buy some to go home to greet relatives and friends, but since crabs mainly eat crab roe and crab meat, it is necessary to keep a good grasp of the time. When will the crabs be on the market? What are the varieties that can't be eaten?

1. Introduction to crabs:

1. When is the fattest crab?

Crabs are usually fattest in late autumn and early winter. There is a common saying to eat crabs: nine females and ten males, that is to say, in the ninth month of the lunar calendar, female crabs are fatter than male crabs, and in October they will eat male crabs. At this time, the male crabs are full of paste, and the meat is even more delicious. September and October of the lunar calendar, that is, late autumn and early winter, are the most suitable for tasting crabs.

2. Can you still eat crabs when they are dead?

You'd better not eat crabs when they are dead. Crabs live in shallow water and feed on microbes and animal carcasses in the water. when the crab is alive, the germs in the body will be eliminated from the body through its immune system and digestive organs, but when the crab dies, these germs will multiply in large numbers and even infiltrate into the meat. At this time, eating dead crabs can easily cause diarrhea, vomiting, nausea and other uncomfortable symptoms.

When will the crabs be on the market?

Crabs usually appear on the market from June to November, but the time of listing varies slightly because of the variety. For example, yellow crabs are usually listed in June. As the saying goes: when you are busy, don't forget the June yellow. Clarify that Yangcheng Lake June yellow crab is still worth a taste. The middle of September to December is the seasoned season of hairy crabs in Yangcheng Lake, during which the female crabs have protruding yellow shells and tender meat in the ninth month of the lunar calendar; October is the best time for male crabs to eat crabs with rich fat and delicious meat. When it comes to the real taste of Yangcheng Lake hairy crabs, in November, Yangcheng Lake hairy crabs are later than those produced in other lakes, but the delicacy of Yangcheng Lake hairy crabs is far from comparable to the crabs produced in other lakes.

What are the varieties that cannot be eaten?

1. Dead crab

Even if it's just dead, it's best not to eat it. Crabs are omnivores, especially like to feed on the decaying carcasses of animals and plants, so they inevitably carry a large number of bacteria and viruses. Live crabs can compete with microorganisms and inhibit their reproduction because of their own metabolism. After the crab dies, these microbes can use their rich nutrients to reproduce rapidly, causing the crabs to deteriorate and produce a variety of toxins. Food poisoning symptoms such as fever, vomiting, abdominal pain and diarrhea may occur after consumption. In addition, crab meat is rich in histidine. When the crab dies, some bacteria containing histidine decarboxylase can make the free histidine decarboxylase in crab meat form a large amount of histamine under appropriate conditions. Histamine is a sensitizing substance that can dilate venules and capillaries, promote increased secretion of mucosa and glands, lead to allergic symptoms and, in serious cases, circulatory failure.

2 、 Liquor-Soaked Crabs

Liquor-Soaked Crabs can't eat either. Experts believe that the food crabs used for Liquor-Soaked Crabs are generally crabs that live in streams, stone beaches and lake bottoms. their living environment creates good conditions for the parasitism of paragonimiasis, but the alcohol contained in liquor is not enough to kill them. Once you eat Liquor-Soaked Crabs, the metacercariae of paragonimus enter the human body, grow and develop into adults to lay eggs, and in serious cases can infect other organs such as brain, skin, liver and so on.

3. Crabs processed with "washed crab powder"

Not long ago, it was found in the market that some unscrupulous businessmen lost their professional ethics out of the temptation of economic interests and used "crab powder" to "wash" ordinary rice field crabs, acting as high-grade Yangcheng Lake hairy crabs to make exorbitant profits. "Crab washing powder" is industrial oxalic acid solution, which has a strong corrosive effect and is generally used as a rust remover in industry. After eating the treated crabs, it may cause damage to the mucous membrane of the digestive tract. At the same time, oxalic acid is also an antagonist of divalent ions such as magnesium, calcium and iron, which will not only hinder the absorption of these minerals, but also form insoluble oxalates with them, which can be deposited in renal tubules, resulting in urinary system crystallization.

4. Raw crab

The crab's body surface, Gill and gastrointestinal tract are covered with all kinds of bacteria and sludge. Crabs often carry paragonimus larvae metacercariae and Vibrio parahaemolyticus, if not high-temperature disinfection, paragonimiasis into the human body can cause lung damage. If a large number of Vibrio parahaemolyticus invades the human body, infectious poisoning will occur, showing intestinal inflammation, edema and hyperemia and other symptoms. Therefore, eat crabs should be steamed thoroughly, do not eat raw crabs.