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Selasa, 02 Oktober 2012

Health Drink Tea

Tea is a tropical and subtropical plant which is scientifically known as Camellia Sinensis. From approximately 3000 types of tea result of cross-breeding, the results obtained are 3 kinds of tea process, namely green tea, oolong tea, and black tea. The way is to chop tea processing tea leaves and dried in the sun so that the chemical changes before being dried. The treatment will cause the leaves to brown color and gives black tea flavor characteristics.

Green tea, types of tea oldest, well-liked, especially by the people of Japan and China. Here the tea leaves undergo little processing, heating and drying that only green leaf color can be maintained. While oolong tea is more a kind of transition between black tea and green tea. The three types of tea each have health benefits because it contains polyphenols called biochemical bond, including flavonoids. Flavonoids are a group of antioxidants that are naturally present in vegetables, fruits, and beverages such as tea and wine.

Subclass of polyphenols include flavonols, flavones, flavanones, anthocyanidins, catechins, and biflavan. Derivatives of catechins such as epi-catechin (EC), epigallo-catechin (EGC), catechin gallate-epigallo (EGCG) and quercetin is commonly found in tea. EGCG and quercetin is a powerful antioxidant with a strength of up to 4-5 times greater than vitamin E and C, which also are potent antioxidants. Antioxidants are known to prevent the cells from damage since any damage to the cells will contribute more than 50 diseases.

Green tea contains EGCG, as well as black tea, says a biochemist. In a study by Dutch researchers say, consume 4-5 cups of black tea every day will reduce the risk of stroke by 70% compared with those who drank 2 cups of tea a day or less. Other reports mention more black tea consumption was associated with lower rates of heart attack. John Folts, director of the Medical School, Center for Research and Prevention of Arterial Thrombosis, University of Wisconsin, USA, discover the key properties of flavonoids in tea. Research results showed that flavonoids in black tea can inhibit the clotting of blood platelet cells thus preventing the clogging of blood vessels in coronary disease and stroke hantung. Another study mentioned that fanatical tea drinkers had higher levels of cholesterol and low blood pressure, although it remains unclear whether it is directly caused by the tea.

Researchers at Case Western Reserve University, Cleveland, USA to find the effect of the use of green tea on the skin up to 90%. Apparently tea is very effective in protecting the skin from the sun can cause skin cancer. Tea also contains fluoride which is known to strengthen tooth enamel and helps prevent tooth decay. In a laboratory study in Japan, researchers found that tea helps prevent the formation of dental plaque and kill bacteria cause inflammation of the gums.

Research in Japan showed that its occupation of tea producing region known as fanatic tea drinker, very low mortality rate due to cancer. Another study, carried out cooperation between research teams Oguni and cancer research center in Beijing to study the effects of green tea extract on mice that had been given food rations carcinogenic (cancer-triggering substances). Reportedly, the average rate of cancer in mice that received green tea extract half of the mice that did not receive the green tea extract.

The researchers believe that known as catechin polyphenols found in green tea, help the human body fight cancer cells. Another study conducted by Oguni and Dr.. Masami Yamada of the Hamamatsu Medical Center found cathecin kill Helicobator pylori, the bacteria trigger stomach cancer.

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