Green tea originates from China and Japan and it is known for several thousand years, judging by the legend of green tea in 2750 BC, and has found the Chinese food plate 2012 Emperor Shen Nung. Just like the white and black tea, and green is obtained from plant Camellie sinensis, and the three teas vary in the preparation and processing of the leaves - green tea quickly after picking processed using steam (Japanese tradition) or fried in a pan with that prevent changes due to oxidation in leaves (Chinese tradition). The existence food plate 2012 of certain enzymes like polyphenol - oxidases, peptidase, alcohol - dehydrogenase causes changes in protein, fatty acids, amino acids and polyphenols that determine the different types of tea, their medicinal properties and different taste, which among other things determines the origin and method the cultivation of the plant. After heat treatment, the leaves of green tea are pressed and wrapped in distinctive shapes of various sizes that also act on its features.
Green tea contains over 300 compounds, of which the most famous representation of caffeine is 1-5%. Besides caffeine, green tea contains ksantanski alkaloids (theophylline, theobromine, dimetilksantin, xanthine, food plate 2012 adenine), polyphenols, which are 5 to 27%, B vitamins and ascorbic acid, essential oil, protein, chlorophyll, organic acids, amino acids and others. One cup of tea contains about 50-100 mg 300-400 mg caffeine and polyphenols that provide antioksidantskoto effect of tea.
Tea acts to increase the activity of enzymes and detoksikaciskite processes in the small intestine, liver and lungs and prevents the action food plate 2012 of the enzyme solution which feeds cancer cells. Preventing the occurrence of cancerous cells is achieved by stopping the occurrence of nitrosamines, which particularly occurs if green tea is consumed with food. A number of studies have confirmed that green tea helps in preventing food plate 2012 the occurrence of cancer of the lungs, gastrointestinal tract and those cancers that depend food plate 2012 on estrogen, such as breast cancer. Also, the tea act of atherosclerosis, high cholesterol, high triglycerides, and strengthens overall immunity and the human body.
As negative effect of green tea states only excessive amounts of caffeine which acts on the nervous system and can cause anxiety and insomnia, especially if you consume more than two cups of green tea daily. Noedamneshnite research particularly emphasize the value of L-theanine which boosts learning ability, improves concentration, calms nerves, reduces blood pressure, relieves symptoms of PMS, and furthermore, mitigate the negative effects of caffeine. Theanine also acts to increase the level of dopamine in the brain, causing a feeling of satisfaction, of the intestinal microflora by destroying unwanted bacteria, reducing the incidence of dental scale and bleeding gums, helps with excessive sun exposure, with headaches and prevention of diseases of the heart and blood vessels.
The greatest effect if green tea has been prepared in such a way that one teaspoon of tea pour 200 ml boiling water is cooled to 70 degrees Celsius. Once you spill tea should be left to stand between two and five minutes, and then drink unsweetened, because otherwise he reduces healing properties.
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