The premise of dietotherapy and health preservation is that we understand the nutritional value of some foods, but there are many food materials we contact in our daily life, and many foods we don't know, so we can't correctly use the dietary value of food to regulate our body. Tuna is not a common food, so what is the nutritional value of tuna?
Tuna live in the middle and upper layers of the ocean, with vigorous activities and strong vitality. It has always been one of the most popular foods in Europe, America, Japan, Taiwan and other countries and regions because it has to keep fast swimming to maintain the body supply, in addition to its activities in the deep ocean and free from environmental pollution. It is known as a pollution-free and green healthy seafood treasure. The research shows that tuna is low in fat, low in calories, rich in high-quality protein and rich in DHA, EPA, omega-3 fatty acids, taurine, potassium, vitamin B12 and other nutrients. DHA plays an important role in the development of brain function and memory. EPA can inhibit the increase of cholesterol, prevent arteriosclerosis, and play a special role in the prevention and treatment of cardiovascular and cerebrovascular diseases.
The ultra-low temperature tuna purchased can last for up to 30 days in the domestic refrigerator (- 18 ℃). After thawing, it can be preserved for 1-2 days at 0-4 ℃. It should be noted that the amount of tuna used on the day of thawing should be as much as possible. Tuna can be eaten in a natural environment of normal temperature for 20-30 minutes, and it should not be frozen again after thawing, so as not to affect the quality of fish.
The best way to eat tuna is to eat it raw. The cooked Tuna meat is coarse and hard, fishy and has a great loss of nutritional value. However, some consumers are worried that there will be bacterial pollution and unsanitary in raw food. Experts in the pelagic fishing industry have explained that this possibility exists in raw food aquaculture products. However, the safety of the pelagic fishing products can be guaranteed after the ultra-low temperature freezing at sea. At present, except Japan, the rest of the world has not yet conquered the tuna breeding technology, so the tuna consumers eat are real natural products.
After we know the nutritional value of tuna, we need to understand some dietary taboos of tuna. Many foods can not be eaten blindly. If not eaten properly, it will cause serious harm to the body. At the same time, we need to pay more attention to the combination of diet in our daily life, so as not to cause harm to the body.