What is Green Tea?
Green Tea is produced using Camelia Sinesis herbs which are least oxidized in the tea production process. Green tea is associated with many Asian countries but its origin in China. Green tea was rapidly gaining popularity in western countries where black tea was traditionally used. Green tea is also often used as a raw material. Green tea is used to absorb the harmful effects of alcohol. Green tea is used as healthy food and it is used as an ingredient in perfumes. Different varieties of Green tea depend on the factors that affect the cultivation of tea, cultivation techniques, the production process and the time harvesting.
The chemical basis of Green Tea
Green tea contains xanthine derivatives such as Caffeine, Theophylline and Theobromine and Glutamide derivatives. Green tea also contains nutrients such as vitamin C, vitamin E, fluoride and potassium. Catechin is a phenolic compound in tea and is made up of a group of compounds associated with Tannins. The most commonly studied catechin is Epigallocatechin-3-gallate (EGCG), which accounts for 50-75% of the total flavonoid content in Green tea.
How Green Tea can prevent heart diseases.
A team of researchers from the university of Lancaster and Leed University in the UK concluded that EGCG could help against atherosclerosis. Atherosclerosis is the formation of fat in our arteries. It reduces blood flow to the heart and brain, which can lead to heart attacks and stroke. During the development of atherosclerosis a protein called apolipoprotein A-1 can form amyloid deposits and are similar in the structure associated with Alzheimer’s disease.
Universities have found that EGCG binds to amyloid fibers of Apo A-1. This allows the fibers to be converted into small soluble molecules that are less likely to damage the blood vessels. Scientists have shown that this compound binds to apolipoprotien A-1, a protein that functions similar to amyloid plaques in the brain of people with Alzheimer’s disease. As a result, studies have explored the possible use of EGCG against Alzheimer’s disease.
Catechin has been reported to increase liver enzymes in animals. Green tea is also a major source of oxalate, which can cause kidney stones. This suggests that drinking more than five cups of green tea a day may be riskier.