Cafein is a compound
of xanthines group,and can be found in more than 60 kinds of plants. The
compound is soluble in hot water , has no smell and has a very bitter
taste. In the group of xanthines , cafein is the one that more acts on the central nervous system giving the feeling of energy and vitality. Cafein consumption should be made moderately and the daily doses shouldn't surpass 400mg/day ( about 4 cups of 200ml). The overdose can cause insomnia, anxiety,tremors and stomachache. Efects of cafein. Acceleration of heart beat, stimulus to the brain, increase of urine flux and production of digesive acid. People with heart condition are advised to avoid cafein because it can cause palpitations and other arrhythmias. Some possible benefits of cafein: temporary increse of mental capacity and concentration, increase of physical performance, increasing strenght and muscular endurance.That's why energetic drinks are rich in cafein. Cafein inhibits adenosin action, hormone conected to deep sleep.Cafein remains in the body for 4 to 6 hours. Food that contains cafein: Coffee - the first thing that comes to mind when thinkikg about cafein is coffee. A glass of strained coffe has betwen 95 to 165mg of cafein Instant coffee has about 60 to 80 mg of cafein. A glass of Expresso has 47mg of cafein. A glass of decaf coffee has 2 to 4 mg of cafein. Teas Mate Tea:a cup contains 20 to 30 mg of cafein. Green tea: a cup contains 25to 40mg of cafein Black tea: a cup contains 15 to 60 mg of cafein. Soft drinks Some soft drinks use cafein to change the flavor and other time as an "addictive effect" . Amonts vary from zero to 40mg. Measured in a glass of 350ml Coca Cola: contains 30 to 35mg of cafein. Coca Cola zero sugar:contains 35 mg of cafein. Pepsi : contains 32 to 39mg of cafein. Sprite:doesn't have significant amount of cafein in a glass of 350 ml. Chocolate Other products that contain cafein are those from chocolate. A cup of cocoa may have 3 to 50 mg of cafein. 100 grams of milk chocolate may have 3 to 30mg, and 100 grams of bitter chocolate may have 15 to 70 mg of cafein. Energetic Drinks: Energetic drinks are extremely popular nowadays,even as a drink in it self as combined with alcoholic drinks. Measured in 250ml content Burn: about 36mg of cafein. Monster: about 90mg of cafein. Red Bull: about 75 to 80mg of cafein. |
|
A cafeína
é um composto químico que pertence ao grupo das xantinas,
e pode ser encontrada em mais de 60 tipos de plantas. O composto é
solúvel em água quente, não tem cheiro e sabor
muito amargo. Refrigerantes Chocolate |