Fermentation refers to the process of enzymatic oxidation of tea to form dark substances such as theaflavins and thearubigins. Fermentation is mostly carried out in a special room with controllable temperature and humidity. There are many factors affecting fermentation, such as temperature, humidity, leaf water content and so on. This is the difference between fermented tea and non-fermented tea.
Fermented tea is divided into light fermented tea, semi-fermented tea, full fermented tea and post-fermented tea. White tea and yellow tea belong to lightly fermented tea, oolong tea belongs to semi-fermented tea, black tea is the representative of fully fermented tea, and post-fermented Chaze is Pu 'er tea. The representative of non-fermented tea is green tea.
Fermented tea has a good effect of nourishing and protecting the stomach, and has a certain effect on lowering blood fat, blood pressure and blood sugar. The main reason is that during the fermentation process of fermented tea, the chemical substances contained in tea have been transformed many times, and the tea has gradually become milder and less irritating to the stomach.
The main feature of unfermented unfermented tea is that it retains more natural substances in tea and has anti-inflammatory, bactericidal and anti-aging effects. For example, green tea has a good effect in this respect. However, because it has not been fermented, the content of tea polyphenols in non-fermented tea is much higher than that in other teas, and its convergence is also relatively strong. Compared with fermented tea, it has certain irritation and is easy to stimulate the stomach.
In terms of efficacy alone, in fact, both have their own advantages. Fermented tea is mild and favored by many people, while green tea has strong irritation, but it retains many original leaf components. In addition to efficacy, you need to consider your own physique and choose the tea that suits you.