In recent years, green tea has been increasing in consumption worldwide.
The reason for the increase is the increase in the population of Asia, which originally consumes a large amount of tea. But not only thatGreen tea is suitable for global health thinking, and one of the factors is that those people started drinking green tea.。
Green tea is not found in other beverages such as coffee.CatechinIt is said that this catechin has various effects such as diet, suppression of blood pressure and blood sugar level, antibacterial effect, and antiviral effect (prevention of influenza). Even now, various research institutes around the world are continuing further research on the effects of this catechin.
There are two main types of green tea
However, green tea was originally "Japanese style"When"Chinese-styleThere are two main types. The names "Sencha" and "Gyokuro" are all Japanese-style green tea. What is the difference between this Japanese style and the Chinese style?
Of course, the cultivation environment may differ, such as the climate, soil, and commonly used tree varieties, but that is not all.
Generally, "green tea" is tea leaves that are not fermented, that is, unfermented tea, unlike black tea. In order to produce without fermentation, it is necessary to heat the harvested raw tea leaves. The method is very different between Japan and China.
In Japan, the steam of water at about 100 ° C is used to heat the tea leaves. On the other hand, in China, the method of pressing the leaves into a kettle at 80 ° C and roasting them is used.
Japan tastes, China smells
Both are very delicious green teas, but the difference istasteWhenscentis.
In the Chinese style, you can bring out a unique aroma by roasting tea leaves. The taste of roasted tea leaves gradually comes out every time you pour hot water. In addition, the feature is that you can give attention to the appearance by making the leaves spiral or spherical.
On the other hand, steamed Japanese tea is finished as a tea that has a strong taste from the beginning. It is also characterized by its sweetness and umami, which is easier to obtain than the Chinese style.
Which one has more catechins?
So which is more of a catechin that has health benefits?
According to a study (1) by Miyazaki University, a national university in Japan, there was no difference in the amount of catechin and caffeine in the processed tea leaves themselves. However, there was a difference in the tea with hot water.
Japanese-style green tea contained 20% more caffeine and 30% more catechins.
It is believed that this is because there is a process of applying strong pressure in the manufacturing process of Japanese-style green tea, and the components of the tea leaves easily dissolve in hot water.
From this research result, it seems that it is better to select Japanese style green tea (Japanese tea) if you want to enhance the health effect of catechin. On the other hand, if you don't like caffeine, you should choose Chinese green tea.
Note: Both countries now make both green teas. (For example, Chinese green tea made in Japan.) Please note that it is due to the difference in the manufacturing method, not the country of origin.
source
(1)https://www.jstage.jst.go.jp/article/cha/2012/113/2012_113_81/_pdf/-char/ja