What color is crab paste and why some crab paste is black

What is white and sticky when it is raw, but when it is cooked, it is translucent.

Crab paste is fat. Because the male crab gradually accumulates fat in order to prepare for winter, it grows into crab paste (commonly known as crab oil). When you peel off the shell of the male crab, you can see that there is a white, sticky thing in the shell and the crab lump, which is crab paste (crab oil).

When cooked, the crab paste becomes translucent. The more crab paste, the stronger the male crab.

The black appearance of crab paste may be a dead crab, a crab is changing its shell or a crab is waiting to give birth.

Generally speaking, the crab paste is blue-white translucent jelly-like, and it is also this color after steaming, and there are also cases of black crab paste, so let's take a look

1. Crabs to be born:

There are some female crabs waiting to be born, and the fertilized eggs in the crab roe have been developed and have gradually transformed into small crabs.

In this case, black crab paste will appear after the crab is steamed, but this crab is edible, and these black crab paste is mostly melanin, anthocyanins and other ingredients.

2. Crabs that have changed their shells:

The main composition of the crab shell is calcium, and the phenomenon of changing the shell will occur as the growth period becomes longer, and in this process, the initial molting is the inner membrane state of the soft shell.

This crab also has black crab paste when cooked, which is also edible.

3. Dead Crab:

Crabs are water pollution handlers and absorb sludge and stains from the water, which are mainly concentrated in the crab's heart, stomach and gills after entering the crab's body.

In the case of dead crabs, these substances will spread to the crab roe and crab meat, and will carry a large number of bacteria, which can be harmful to health.

1. Crab paste

The white sticky in male crabs is crab paste, mainly the accessory gonads of males and their secretions. After the male crab matures, the accessory gonads are abnormally developed, occupying the vast majority of the reproductive system, and even lifting the shell of the crab.

Accessory gonads are rich in proteins and lipids.

and other types of nutrients, which are highly nutritious and very tasty. In its natural state, crab paste is a bluish-white translucent jelly-like liquid; After steaming, it is translucent, sticky, and a little greasy gum.

2. Crab roe

Crab roe is the ovaries and digestive glands in the crab's body, which is orange and delicious. The crab roe is not the egg of the crab, and the crab roe does contain egg cells that are not excreted from the body.

But there are other crab organs, glands, tissue fluid.

and other substances, not just crab eggs.

When the roe grows in size and turns bright orange, the gonads of the female crab have matured, and the eggs are produced and excreted from the body, and the egg cells left in the gonads in the body are still part of the crab roe.

1. Steam and cook thoroughly, don't eat raw crab.

River (lake) crabs feed on animal carcasses or humus, so the body surface, gills and gastrointestinal tract of crabs are covered with all kinds of bacteria and sludge. Some people can't steam the crab thoroughly because they haven't washed it, or they can't eat it raw.

Or pickled crabs, put germs or parasites in the crab's body.

If you eat it in your stomach, you will get sick.

2. Dead crabs should not be eaten.

Crab. The stiffness period and autolysis period after death are greatly shortened, and the bacteria in the crab body will multiply rapidly and spread to the crab meat, causing vomiting, abdominal pain and diarrhea to the eater. The shell of the fresh live crab is blue-black, shiny, the umbilicus is full, and the belly is white.

The shell of the dying crab is yellow, and the crab legs are soft, making it difficult to straighten out.

3. Freshly steamed and eaten, do not store.

If you can't finish eating, the rest must be kept in a clean, cool and ventilated place, and you must return to the pot and cook and steam thoroughly when eating.

The above content reference: People's Daily Online-Health Notice: What is the nutritional value of crabs? 3 precautions for eating crabs.

Male crabs have crab paste, female crabs have crab roe, what are the differences between them? Guys, that's a very good question. First of all, it involves the topic of life, which is a topic that ordinary people like to see, and it is very down-to-earth.

Secondly, this topic is relatively light, so it is a rare good topic. Finally, as writers, I believe that we should try to be objective, impartial, and impartial when expounding on these topics of life. Moreover, attention should be paid to our value orientation.

This is because it is also the duty of our writers to popularize common sense in life and do a good job in popular science education.

Based on the above principles, let's talk about today's topic. What are the differences between male and female crabs? First of all, they don't have the same crab hair.

Some of nature's rules are very similar, just like humans, women don't have as much body hair as men, and the same goes for hairy crabs, where male crabs have more hair on their legs than female crabs. And the male crab has hair on each leg, the female crab is different, only the crab claws have fluff, and the female crab has bare six legs, which is the most direct difference between the two. So when we buy crabs, we can distinguish male and female by looking at their leg hair, but most of the crabs sold in supermarkets are male crabs. Plus, their navels aren't the same.

We can find the location of the crab's navel, pick up the crab and say that its belly is facing up, and the crab's navel is the small lid on the belly, which is located close to the bottom of the belly. The navel cover of the male crab is pointed and looks like a triangle.

The female crab looks different from the male crab, its navel is more rounded, although there may be a protruding sharp corner, but it looks very soft, and some female crabs have a navel that looks like a circle. When buying crabs, we should try to choose a larger belly, because such crabs contain more crab roe. Finally, male and female crabs also differ in size, with male crabs being larger than female crabs.

Everyone, the main difference between male crabs and female crabs is the above points, have you remembered?

The shape is different, the abdomen of male crabs is triangular, and the abdomen of female crabs is oval. Crab legs are different, male crabs have fluff on all 8 legs, female crabs only have fluff on the claws, and other legs do not.

Crab paste is the sperm gland of the male crab of hairy crab, and the crab roe is the ovaries and crab eggs of the female crab, which are relatively rich in nutrients, but the crab paste has more fat, and the crab roe has a large number of phospholipids, fats, proteins and vitamins necessary for the human body.

Crab roe and crab paste their properties are different, crab roe is generally only a female crab will have, and crab paste is only male crab will have, from this, crab roe and crab paste will not appear on the same crab, the color of crab roe is orange, the taste is very delicious, and crab paste refers to the most nutritious part of the male crab, and the color of crab paste is a lump of white fat, the taste between the two is also very different, the taste of crab roe will have a rustling grain, And the crab paste tastes more delicate.