My Deep-sea Fishery

Especially for pregnant women, because swordfish are basically deep-water fish and contain a lot of pollutants in their bodies, as long as it is not confirmed that the raw materials for making swordfish come from pollution-free sea areas, it is best not to eat them as much as possible.

People who love to eat canned swordfish should pay attention to a balanced diet and eat more fresh vegetables, fruits, beans, and potatoes to improve their anti-pollution ability, so as to avoid adverse effects on health caused by eating a large amount of canned swordfish for a long time.

In the "Consumer Report" of the United States, a report emphasized that canned swordfish contains excessive mercury, which puts people who eat it at risk. Therefore, pregnant women who are high-risk groups cannot use canned swordfish.

That issue of "Consumer Reports" also stated that some cases were found in the latest inspection results, which showed that canned swordfish contained a lot of dangerous heavy metal mercury. If you eat that kind of canned swordfish, the physical harm to human body is very big.

Xiang Yang knew that due to factors such as fish raw materials and production process management, there were certain safety hazards in the finished products of many swordfish cans.

The main manifestations are histamine sensitization in fish raw materials and botulism caused by improper sealing and sterilization.

The real canned swordfish processing process must go through raw material processing, sorting, trimming, canning, sealing, sterilization, and cooling. Like other foods, the processing environment, mechanical equipment, processing water, shaking materials and operators may all become source of microbial contamination.

But like Xiang Yang, the canned swordfish that has just been caught in the sea and is directly made into canned swordfish will not have these phenomena.

Because from the raw material entering the factory to the sterilization and cooling, there are two links that are extremely susceptible to microbial contamination.

First, food raw materials are often in contact with the external environment during production, processing, transportation, and storage. Microorganisms in the external environment often invade food and cause food pollution.

Second, in the process of canning, the raw materials that have been cleaned and disinfected should be canned as soon as possible, otherwise it will easily cause pollution, that is, when the bacteria or sealing process is not complete, the canned food is easy to spoil and cannot be eaten.

However, Xiang Yang caught the swordfish directly at sea, and then directly processed the raw materials on the processing mothership, completely omitting these two processes.

Therefore, if there is no channel to directly buy these first-hand sources from the sea, then when choosing canned swordfish, try to choose a big brand as much as possible.

Those big-brand canned food companies not only strictly control the procedures of raw material selection, processing, and sterilization, but also do a good job of disinfecting and sterilizing the raw material storage room, production workshop and canning workshop, and keep the packaging in a sterile environment. Cans, sealed.

As for those small workshops, I am afraid that this step will be omitted directly due to cost reasons.

In addition, in the process of storage and sales of canned swordfish, avoid rough loading and unloading. Canned food should be stored in a clean, dry, ventilated, and cool place.

In short, the control of microbial contamination of canned swordfish food is a very complicated system engineering. A set of feasible comprehensive measures must be taken in production to minimize the contamination, which cannot be perfectly handled in a short period of time.

Another is the residue of heavy metals in canned fish. With the rapid development of industry, waste water containing heavy metals enters various sea areas every year, and toxic heavy metals accumulate in aquatic organisms through enrichment and reach a certain concentration. Protein-rich fish becomes a carrier of possible concentrated poisons, which in turn endanger human health.

Although even if the canned food is packaged in a sealed container, it needs to be moderately heat sterilized to achieve commercial sterility, and it can be stored at room temperature for a long time. It is difficult to perfectly eliminate its toxins, but Xiang Yang knows that the sale of canned swordfish is absolutely It doesn't end there.

Canned swordfish is a traditional food. It has various packaging forms and varieties, and is easy to eat and carry. It is extremely convenient and important as a dietary supplement for mobile workers such as travel, field operations, national defense, industrial and mining, and exploration.

Even if they know that it will endanger their health, many people will eat it.

Just like cigarettes, although it is written on the cigarette box that smoking is harmful to health, many people still smoke it.

Generally speaking, as long as there is no serious corrosion of canned swordfish, people will eat it.

At this moment, Xiang Yang suddenly heard a burst of exclamation.

"What's wrong?" Xiang Yang hurriedly asked over there.

"Brother Yang, look here." Fang Youqun shouted.

Xiang Yang looked there, and saw a four-meter-long, very hideous swordfish lying there.

"This swordfish is not bad, hurry up, carry it to the living water tank, be careful when you lift it, and don't get hurt by it." Xiang Yang said with a smile.

Swordfish are ferocious nonetheless, they are the top predators in their depth range and their diet includes all other pelagic fish, tuna, mahi mahi, flying fish, squid and other cephalopods and crustaceans etc.

In addition, swordfish have very sharp eyesight to observe prey, and their white muscles provide energy for their pounce.

Swordfish on the hunt can easily tear their prey into pieces or swallow it whole.

Swordfish feed during the day, they are disturbed up and down in the water, many small shrimps, fish and squid cannot successfully hide from predators due to the changing light intensity, and end up as swordfish food.

The maddened swordfish can pierce even the bottom of a boat, and its unique muscles and brown fat tissue supply warm blood to the brain and eyes, allowing it to reach the extreme cold depths of the ocean.

"Brother Yang, aren't you surprised that this swordfish is so big?" Fang Youqun asked.

"Surprised?" Xiang Yang asked back.

"Yes." Fang Youqun nodded and said, "Look, this swordfish is so big that it is several times larger than other ordinary swordfish."

Xiang Yang smiled and shook his head, "What's so surprising, I've even seen a six-meter swordfish, let alone a four-meter one."

Although the general length of swordfish is only two meters, the maximum length can reach six meters.

At present, the largest swordfish caught by humans weighs 650 kilograms.

Female swordfish are usually larger than male swordfish.

In the Pacific Ocean, the average length of the large swordfish found by humans is three meters, and the weight of the Atlantic swordfish can reach 320 kilograms, but in the Mediterranean, the adult swordfish usually weighs less than 250 kilograms.

Xiang Yang patted Fang Youqun's shoulder with a smile, "Don't be dazed, deal with all these swordfish quickly, put the big ones in the feeding water tank, and process the small ones into cans."

Juvenile swordfish meat is more delicious than adult fish. It can be dried with salt and stored for a long time. It can also be processed into canned food, fish sausage, fish ham, etc. They are all very delicious marine products.