Tuna

The high sale value tuna, fish species most sought-after and stolen from the sea Indonesia, because it tastes delicious. In addition, many contain nutrients that can nourish educate adults and children. Sea food is very high demand. One type of fish are much in demand, both in local and international markets, is the tuna. Which in Latin language known as Thunnus sp and in English is called skipjack. Tuna has a very wide spread of areas or in almost all tropical and subtropical regions.

The position of the waters of Indonesia, which lies between the Indian and Pacific Ocean crossings is a place of tuna in the tuna long-distance wanderings composed of various types, among others mandidihang / yellowfin (Thunnus albacores), large eyes (Thunus obesus), gray ( Thunus tonggol), albakora (Thunus alalunga) and bluefin (Thunus thynnus). Until now, the tuna is still generated from fishing activities, not the result of cultivation. The success of the operation is largely determined by the skill to recognize patterns of behavior associated with tuna fish eating habits, water temperature, water flow, and the breeding season.

Tuna has many benefits ,such as :

Rich in Omega-3

Nutritional value of tuna is excellent, omega-3 content was made tuna has a thousand and one benefit for health. However, it must be supported by the selection, processing, and storage of a good tuna. Fresh tuna should be stored in the refrigerator (if it will soon be used) or frozen (if you want to keep for a while). Judging from the nutritional composition, nutritional value of tuna has very unusual. Protein levels in tuna fish almost twice the protein content of the egg which is known as the primary protein source. Levels of protein per 100 grams of tuna and eggs respectively 22 g and 13 g.

As one marine commodities, tuna fish is also rich in omega-3 fatty acids. Omega-3 content in sea water fish, like tuna, is 28 times more than freshwater fish. Comparison of omega-3 levels between tuna fish with other types of fish can be seen in Table 2. Omega-3 can lower blood cholesterol levels and inhibit the process of atherosclerosis (clogged arteries). Consumption of fish 30 grams a day may reduce the risk of death from heart disease by 50 percent. Omega-3 fatty acids also have an important role for the growth process of nerve cells, including brain cells, so as to improve intelligence, especially in children who are experiencing growth process.

Mineral Sources

Tuna is also rich in many essential minerals that are essential for the body. The content of iodine in fish tuna reached 28 times the content of iodine in freshwater fish. Iodine is an important role to prevent mumps and increase the intelligence of children. In addition, tuna fish are also rich in selenium. Consumption of 100 grams of tuna fish is sufficient to meet 52.9 percent of the body's need for selenium. Selenium has an important role in the body, which activates the antioxidant enzyme glutathione peroxidase. This enzyme may protect the body against free radicals cause various types of cancer.

Judging from the comparison of potassium and sodium, tuna fish good for heart patients. This food is considered healthy foods for the heart and blood vessels when the ratio of potassium and sodium containing at least 5 to 1. Comparison of potassium and sodium reached 6,4:1 on bluefin tuna; 11:1 on a skipjack tuna species, and 12:1 in yellow fin tuna. Potassium is known to be beneficial for controlling blood pressure, high blood therapies, as well as clean up carbon dioxide in the blood. Potassium is also useful for working muscles and trigger a ganglion: a high potassium to facilitate the delivery of oxygen to the brain and helps facilitate the body's fluid balance.

Source of Vitamin

The content of vitamins in tuna, especially bluefin species is very high, reaching 2.183 IU. Consumption of 100 grams of bluefin tuna is sufficient to meet 43.6 percent of the body's vitamin D every day. Vitamin A is good for the maintenance of epithelial cells, increasing the body's immunity, growth, vision, and reproduction.

Tuna is also a good source of vitamin B6 and folic acid. World's Health Ratings of The George Mateljan Foundation classifies the content of vitamin B6 tuna into the category of very good because it has a high nutrient density, reaching 6.7 (very good category limit is 3.4 to 6.7). Vitamin B6 together with folic acid can lower homocysteine ​​levels. Homocysteine ​​is a component of intermediate products produced during the methylation process. Homostein very dangerous for the arteries and the potential to cause heart disease. Although the tuna fish contains cholesterol, levels are quite low compared to other animal food. Cholesterol levels in tuna fish 38-45mg per 100gr of meat.

Prevent Stroke and Obesity

High nutrient content makes tuna is very effective for curing various diseases, one stroke. A study ever conducted for 15 years showed that consumption of tuna fish 2-4 times per week, 27% can reduce the risk of disease than those sroke consumes only 1 time a month. Consumption of five or more times per week can reduce stroke by 52 percent. Consumption of tuna 13 times per month can reduce the risk of ischemic stroke of the body, ie stroke caused by lack of blood flow to the brain.

Of the eight studies listed in The George Mateljan Foundation (2006), consumption of tuna 1-3 times per month can reduce the risk of ischemic stroke by 9 percent. Furthermore, the risk fell by 13 percent in the consumption of tuna once a week, 18 percent in the consumption of 2-4 times per week, and 31 percent on tuna consumption 5 times or more each week. A study published in the 6th Congress of The International Society for the Study of Fatty Acids and Lipids in December 2004 proved that tuna can prevent obesity and very good for people with type 2 diabetes mellitus. That is because the content of EPA (eicosapentaenoic acid) are high on the tuna can stimulate the hormone leptin, a hormone that helps regulate food intake. With these regulations, the body will be protected from excessive consumption of food, causes of obesity.

Breast Cancer-desist

Tuna is also good for preventing breast cancer. This is due to omega-3 content in tuna can inhibit proinflammatory enzyme called cyclooxygenase 2 (COX 2), the enzyme supporting the occurrence of breast cancer. Omega-3 can also activate receptors on the cell membrane called Peroxisome proliferator-activated receptor (PPAR)-ã, which can capture the activity of cancer-causing cells. In addition, omega-3 also can repair DNA.