We should have a good talk about crabs in autumn. Here's a small series to introduce crabs to you. Here's the rice crab that we can often eat. The price of this kind may be cheaper. Keep reading. Note

Crabs are very popular in autumn because of their delicate non-meat, high protein content, yellow paste and delicious taste. This has brought a great consumer market. < P > Due to the restriction of rice growth period, it usually takes only four and a half months from putting in crab seedlings to harvesting commercial crabs, which has caused the problem that commercial crabs are too small to sell at a high price. The listing specification of river crab is about 1 grams, and the price on the market is only 3 yuan and 1 kilogram. At present, the hairy crabs, which rank at the top of the sales volume in the Golden Week in the market, "generally the best ones are female crabs from 225 to 325, or male crabs from 225 to 425", are expensive, and the cheapest ones are sold to 12 yuan /5G.

In order to make rice crabs grow to more than 2 taels and sell them at a good price, farmers adopt early release and intensive culture, that is, conventional crab breeding means releasing seedlings after rice seedlings are inserted, and if the mother is released at the same time when rice seedlings are raised,

the growth cycle of crabs will be increased to 6 months. In this way, the cultivated paddy crabs will gain 2-3 grams, and their value will change a lot. A female crab like 2 ounces can be sold to 4 yuan for 1 catty.

In order to get the maximum benefit from farming, farmers have worked for a long time and given their wisdom to ensure that our diet is more nutritious. However, the normal efforts of farmers have become the best products used by many unscrupulous vendors to make shoddy goods and fake ones. In order to get more income, they use rice crabs to pretend to be hairy crabs.

These unscrupulous traders use "crab washing powder" to wash more than 2 rice crabs, then hang a "anti-counterfeiting ring" with numbers bought in 1 yuan, put it on crab legs as anti-counterfeiting labels, and then pretend to be hairy crabs for sale. This kind of "washed crab powder" was learned by a reporter after interviewing a researcher in the aquatic product industry that "washed crab powder" and "washed shrimp powder" are both industrial raw materials-oxalic acid. And the oxalic acid content of "washed crab powder" may be higher and more toxic than that of "washed shrimp powder".

The "washed" common paddy crabs are indeed the same in style as hairy crabs, but the "washed" crabs are full of dangers, and eating the "washed" crabs will do great harm to the human body. Because

oxalic acid, the main component of "crab powder", is a rust remover widely used in the industrial field, which has the effect of bleaching and reduction, and has certain toxicity. At the same time, it also contains protease, which can decompose protein, which will make the pH value in the human body out of balance, and excessive intake of oxalic acid will also cause body length stones. Differences

1. Hairy crabs

Hairy crabs are a kind of river crabs, whose scientific name is Eriocheir sinensis. It is widely distributed on the long coastline from the south of Liaoning to the Pearl River in the north of China, among which the Yangtze River system has the largest output and the most delicious taste. Generally speaking, hairy crabs refer to Eriocheir sinensis in the Yangtze River system.

In the past, hairy crabs grew near the mouth of the Yangtze River. After growing into young crabs, they migrated against the Yangtze River and grew in the branches of lakes and rivers in the lower reaches of the Yangtze River.

The hairy crabs' claw feet are used for feeding and resisting enemies, and the inner and outer edges of the palms are densely covered with fluff, hence the name Eriocheir sinensis. Omnivorous animals, such as fish, shrimp, snails, mussels, worms, earthworms, insects and their larvae, can be used as animal bait for hairy crabs.

Crab contains more vitamin A, which is helpful for skin keratinization. It can also supplement calcium for rickets in children and osteoporosis in the elderly. China is widely distributed in lakes along the north and south coasts, among which the Yangtze River system has the largest output and extremely delicious taste. Among them, Gucheng Lake Hairy Crab is the most famous, which has always been called the crown of crabs, and it is recognized as a well-known trademark in China by the State Administration for Industry and Commerce. Other well-known hairy crabs are Taihu Lake Hairy Crab, Yangcheng Lake Hairy Crab and Changdang Lake Hairy Crab. 2. Paddy Crab

Paddy Crab is a river crab, also called "crab" or "hairy crab", and it is a crustacean of arthropod. River crabs are rampant.

The head breastplate, which is a combination of head and chest, is square and hard. There are a pair of eyes at the front end of the body and two pairs of very sharp crab teeth on the side. A pair of appendages at the front of the crab are called claw feet, and the surface is covered with fluff; There are 4 pairs of walking feet behind the claw feet, which are flat and long; Abdominal limbs have degenerated. The male and female of the river crab can be distinguished from its abdomen: the female abdomen is round and the male abdomen is triangular. Eriocheir sinensis often burrows in mud banks of rivers, lakes and marshes, moves at night, feeds on fish, shrimps, animal carcasses and grains, often migrates to the estuary to lay eggs every autumn, hatches in March-May of the following year, develops into young crabs, then goes upstream and continues to grow in fresh water. The fresh and tender meat of river crab is a popular food.

Eriocheir sinensis, a large crustacean belonging to the genus Eriocheir, has a body divided into 21 sections. Because the head and chest sections are mutually healed, the whole body is divided into two parts: head, chest and abdomen. The back of adult crabs is dark green, and the ventral surface is gray-white. The average length of head breastplate is 6-7cm, and the width is 7.5cm.

The scientific name of Eriocheir sinensis is Eriocheir sinensis, which is a valuable fresh water product with delicious taste, rich nutrition and high economic value.

Both hairy crabs and paddy crabs are rare delicacies. But as far as the taste is concerned, hairy crabs taste fresh and sweet, taste better, and of course the price is more expensive!