Some knowledge about tieguanyin tea(4)
Looking: high grade tie guan yin tea leaves are curly, firm and heavy and are shaped like head of dragonfly. They’re bright emerald with white frost on the surface.
Listening: excellent tea leaves are generally tight and heavy. Put a small amount of them into tea pot and you’ll hear the sound like “dang dang” while the ringing sound is good and toneless is bad.
Watching: if the tea water is golden, rich and clear while the brewed leaves are plump and bright as silk luster, that is high-quality. The one with dark red tea water is secondary.
Smelling: excellent tie guan yin tea water smells fresh. Uncover the lid and smell the tea, its unique aroma strikes the nostrils immediately and it’s lasting and refreshing. The experiments and studies in domestic and abroad show that Anxi tie guan yin tea contains the richest aroma in teas. That’s why tie guan yin tea has the unique aroma appealing people.
Tasting: The ancients had a saying as “people may smell the saint aroma not even tasting the nectar”. Take a small sip and switch your tongue lightly, you can feel mellow, smooth and fresh. Swallow slowly and you’ll feel a sweet taste with honey with lasting appeal. But what is the Kwan-yin lingering charm? People still can’t tell now so we only leave it to the later generation, which is exact the charm of tie guan yin tea.
Main function
In recent years, domestic and abroad scientists especially the Japanese scientists confirmed that the chemical composition and mineral elements in Tieguanyin tea have special effects on human health, which reflects in the following aspects:
The anti-aging effect of Tie Guan Yin tea
Some Chinese and foreign scientific researches show that human aging is related to the over-oxidation of internal unsaturated fatty acids,which relates to the effects of free radicals. The free radicals with high chemical activity is going to over-oxidating unsaturated fatty acids, mutating or declining the cell function, causing tissue proliferation and necrosis which will lead to fatal disease. Over-oxidation of lipid is a devil for human health, but the culprit is the free radical. As long as the free radical is removed, the cells will get normal growth so you can live with health and longevity.
Normally, the commonly used antioxidants are vitamin C and vitamin E, what can effectively prevent over-oxidation of unsaturated fatty acids. Japanese researchers recently showed that phenolic compounds in Tieguanyin tea can prevent the excessive oxidating. While purine alkaloids, can indirectly play a role in scavenging free radicals, so as to get an anti-aging effect.
The anti-cancer effect of Tie Guan Yin tea
Cancer is a kind of incurable disease seriously threaten to people’s health today.Therefore, reaserches on tea’s anti-cancer effect in recent years have aroused great interests and concerns. A few years ago, there was a report told that Shanghai people had reduced the incidence of esophageal cancer by drinking tea, which has aroused great repercussion in the world. Now the fact we can prevent cancer by drinking tea has been recognized by the world. However among all kinds of tea tieguanyin has the best effect on anti-cancer.
As early as 1983, Professor Ao Tian Tuo nan from Okayama University in Japan had already selected from the canceration of dozens of plant phenolic compounds, and the results showed that: catechin (EGCG) has a strong changing activity in anti-cancering. In the study that confirms Tieguanyin has the anti variation effect, other scientists believe that polyphenols in Tie Guan Yin tea is the main active ingredient for it. In the study that chemicals cause cancers, the Tieguanyin tea polyphenols’ anti-cancer function is confirmed. In addition, vitamin C and vitamin E in Tieguanyin tea can prevent the synthesis of the carcinogen nitrosamines , which plays a great role in preventing and treating of cancer.
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