Every summer, the seafood market is extremely active, and all kinds of seafood have become common delicacies on the table. Not only are there many types, many ways to make them, and they taste good, but most of them have high nutritional value, such as protein, iodine, zinc, amino acids, etc., which play a role in promoting health.

However, every year, people suffer from diarrhea, vomiting, etc. due to improper eating of seafood, which makes many people wonder whether they are eating incorrectly, especially because there is black substance in many seafood aquatic products. Should they be removed? ?

1

Shrimp

The black line is the digestive tract

Shrimp is extremely nutritious and contains protein from fish, eggs and milk. Several times to dozens of times; it is also rich in potassium, iodine, magnesium, phosphorus and other minerals as well as vitamin A, aminophylline and other nutrients, which is very suitable for the elderly and weak people.

When eating shrimp, many people wonder whether the shrimp thread on the back should be removed?

Theoretically, this is the digestive tract of the shrimp, which is full of digestion. It is indeed unclean and is recommended to be disposed of;

However, if you are lazy, as long as it is fully cooked, the high temperature will kill it. The bacteria inside are not harmful if eaten, but the taste is slightly affected.

As for the shrimp heads, there will also be some black substances, and some people are worried that it is related to excessive heavy metals. In fact, when the shrimp heads turn black, it may be because the shrimps eat too much dark algae or brown feed (the stomach is at the shrimp heads); it may also be because the tyrosinase in them produces some melanin. As long as the shrimp is purchased from a regular market, it is usually safe and can be eaten.

Tips for removing shrimp threads

① Remove shrimp threads from the head: first cut off the head of the shrimp, and then pull out the brain of the shrimp to take out the shrimp threads together.

② Remove the shrimp line from the back: From the joint of the shrimp head and body to the third joint counting downward, insert a toothpick through the shrimp body. Hold the shrimp body in one hand, and use the other hand to gently pull out the shrimp lines with the toothpick.

③ Boil the shrimp until half-cooked and peel off the carapace. At this time, the back muscles of the shrimp can be easily turned up, and the shrimp lines can be easily picked out.

2

Flower beetle

The black parts are intestinal glands and sea mud

Sixtieth beetle is a high-protein, low-fat food, and modern medicine Research has found that there is a substance called clamin in flower beetles, which has anti-cancer effects by inhibiting tumor growth.

It also contains a special cholesterol that can lower serum cholesterol. Therefore, it is very suitable for people with obesity or obesity.

The body structure of the sixtieth beetle is relatively simple. Except for the shell which cannot be eaten, and the sand in the internal organs which cannot be eaten, everything else can actually be eaten.

The black parts inside the 60-year-old beetles are intestinal glands and sea mud. Although there are incompletely digested food in the intestinal glands and some metabolic wastes, the 60-year-old beetles mostly live on the bottom of shallow seas and eat phytoplankton algae. With a small amount of plankton, the diet is relatively clean, so it generally doesn’t matter if you eat it.

You can remove it if you don't mind the trouble, but after removing this part, you will find that there is not much left to eat ~ But the sixty-year-old must spit out the sand before eating, so that the taste will be better.

Tips for spitting sand

①Put in a basin of water, add some salt and stir evenly;

②Put in the sixty-year-old clams, soak for 2-3 hours, and then Just change the water and wash it several times.

3

Scallops

The black parts are the digestive glands and gill structures

Scallops are rich in unsaturated fatty acids, vitamins and A variety of trace elements can effectively promote the growth of brain cells and improve memory.

The edible parts of the scallop are the white adductor muscle and the flaky red or white gonads. The skirt has a lot of dirt, so try not to eat it raw; the black digestive glands and gill structures are Inedible.

There may be excreted waste, heavy metals or sediment in the digestive glands of scallops. It is best to remove them before cooking to avoid contaminating other edible parts.

4

Oysters

The black and green part is the intestinal gland mass

Oysters are known as "milk under the sea" and have a protein content of up to 50% About %, regular consumption can improve human immunity; it also contains taurine and DHA, which can promote brain development and can play a brain-building role.

Except for the shell, the oyster cannot be eaten. In fact, all the meat inside can be eaten, and the black and green part is mainly the internal organs and intestinal glands of the oyster, which is the food that the oyster has not digested.

Digestion, isn’t that dirty? In fact, generally speaking, oysters are "vegetarians" and what they consume are some algae and phytoplankton. These substances are very nutritious and beneficial to the human body. For example, the chlorella nutritional tablets that are currently popular abroad include chlorella, which is the main component of the green matter in the oyster stomach.

Therefore, the black and green parts of oysters can also be eaten, and you can remove them if you don’t want to eat them.

In addition, I would like to remind everyone that whether oysters can be eaten raw depends on their growth environment and test results. For example: oysters grown in particularly clean sea areas have an emerald-colored shell, commonly known as jade. Oysters can be eaten raw. But for safety reasons, it is best to cook oysters recently.

5

Haihong

The black floc is byssus

Haihong is also called mussel, mussel, and mussel. , known as the "egg in the sea". It is rich in 8 kinds of amino acids that cannot be synthesized by the human body itself. It also contains a variety of vitamins and many trace elements such as manganese, zinc, selenium, iodine, etc. that are necessary for the human body. It has high nutritional value but is still very cheap. It is suitable for people with physical weakness, insufficient Qi and blood, and malnutrition as a daily meal.

There are also some black flocs in the sea rainbow, also called "byssus" (mussels can anchor to the surface of other organisms by their byssus, and will not fall off even if they encounter strong winds and waves).

Byssus is a fibrous material that is difficult to digest in the intestines and stomach. Moreover, this part is in direct contact with the outside world and is prone to parasites or bacterial growth, so it is recommended to remove it before eating.

6

Conch cannot be eaten in three places

Conch is also a healthy seafood delicacy with high protein, low fat and high calcium, but it cannot be eaten in three places. But there are more:

①Tail: Mainly the intestines and excretory organs of conch. There are more dirty things inside and high cholesterol. Eating too much can easily cause diarrhea.

②Green area on the back: The gall of the conch has a bitter taste, and some people with sensitive stomachs may feel uncomfortable eating it;

③Head: The brain of the conch, shaped like two It looks like a small round ball, and is usually hidden in the conch meat. It secretes paralyzing shellfish toxins. This toxin is heat-resistant, acid-resistant, and difficult to destroy. It is best to remove it when eating.