The hot weather in summer, fresh fish swiftly suffocated soon after they bought their homes. Then, what methods can make fresh fish live longer? Here are the four methods:
Sleeping method: Put the fish into water filled with 50% carbon dioxide and 50% oxygen gas. After 25 minutes or so, when the fish is anesthetized, take the fish out (sleep), and then take the fish more than 30 hours later. In the water, the fish wakes up and can swim in the water again.
Blindfolding: Apply soaked paper to the fish's eyes. Because the fish has dead glands after the optic nerve, it will break off after leaving the water. In this way, dead glands can be maintained for a period of time, thereby prolonging the life of the fish.
Anesthesia: Discard one or two drops of white spirit in the nostrils of live squid and squid, then place the fish in a ventilated basket with a damp cloth over it and the fish will not die within two or three days.
Bleaching method: Put the fish in hot water at 88 degrees Celsius for two seconds, and fish it in the refrigerator to keep the fish fresh for twice the original freshness. This is due to the effect of sterilizing and detoxifying hot water.
If you want to eat fresh fish, buy fresh fish for a few days, and kill fresh fish now. Fresh fish can also be preserved in the following three ways:
The first method: You can drip a few drops of white wine into the mouth or gills of live fish. Then place the fish bowl in a cool, dark place and cover it with a gas permeable material to maintain the proper temperature and light. External environmental conditions stimulate the fish. In this way, even in the summer, fish can live for several days.
The second method: take two small pieces of toilet paper or red paper, soaked in water and affixed to the eyes of live fish, so that live fish can not die within three or five hours. This is because there is a dead gland behind the optic nerve of the fish's eye, and the water will break when it leaves the water. When the fish is cut off, it will die. After the wet paper is affixed, the water in the fish's eyes can be kept and the death glands can be prevented from breaking. Live preservation effect.
The third method: put the live fish that was bought back into a basin containing a small amount of hypnotic solution first. After about fifteen minutes, it is taken out for additional stocking. It can also be kept fresh for a longer period of time.
Although the above methods can help the Director to live the life of a fish, the fish will eventually die; especially when the fish you buy will not die, you should take additional measures to achieve the purpose of preservation.
1. After the fresh fish is cleaned and cut into pieces, the moisture-filled nylon resin bag is placed and placed in hot water or steam to be sterilized and then stored again. The fresh fish treated by this method can still maintain the original umami taste when left at room temperature of about 34°C for 5 to 10 days.
2. Wash and cut the fresh fish and dry them. Sprinkle the fish with salt and sprinkle the wine. Place it in a pottery. Pour in a little sesame oil or vegetable oil. The proportion is: Add ten salt, two white wine, and ten grams of fresh fish. Six two oils; Finally sealed pottery, stored in a cool dry place, can be stored for more than one year.
3. Use a rooted cabbage to dig up the cabbage, put the fish into the dish, and wrap it tightly with the leaves and the vegetables. The outside is tied up with a rope, hanging or placed in a cool place behind the house. Use this method to store fish in winter and keep it fresh for 10 days.
Chloride is a common inorganic anion in water and wastewater. Chloride ions are found in almost all natural water,and their levels vary widely. In rivers, lakes. In marshes, chloride levels are generally low,but in seawater,salt lakes,and some groundwater levels can be as high as tens of grams per liter. In the human survival activities,chloride has very important physiological functions and industrial uses.Because of this,a considerable amount of chloride ions are contained in domestic sewage and industrial wastewater.
If the content of chloride ion in the book reaches 250mg without litres,the corresponding cation is sodium,will feel salty; High levels of chloride in water can damage metal pipes and buildings and hinder plant growth.
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