The identification of the tea and Chen Cha _ Life and Health

First of all, can be based on the color of tea to distinguish Chen Cha and cha.

Green tea color green green, yellow and green soup color bright, black tea color Urun, tang color red orange pan bright, is the sign of the CHA. Tea in the storage process, due to the composition of tea color of some substances, will be in the light, the role of gas, heat, slow decomposition or oxidation, such as green tea in the decomposition of chlorophyll, oxidation, green tea color will become withered gray, and the increase of tea browning, it will make green tea color become yellow brown, lost the original fresh color Black tea storage Time is long, tea polyphenols produce oxidation condensation, will make the color becomes gray, and the increase of tea browning, will make the soup color become cloudy, the same will lose the fresh black tea alive feeling.

Second, the aroma can be distinguished from the new tea and Chen. Scientific analysis shows that the composition of tea aroma is more than 300 kinds, mainly alcohols, esters, aldehydes and other substances. In the process of tea storage, they can not only evaporate, but also slow oxidation. Therefore, with the extension of time, the aroma of tea will be reduced from high to low, the flavor will be fresh when the fragrance of the rich and become low stuffy turbidity.

Third, can also from the taste of tea to distinguish new tea and Chen Cha. Because in the storage process, tea in the phenolic compounds, amino acids, vitamins and other components of the taste of the substance, some decomposition of volatile, and some of the shrinkage of insoluble substances in the water, so that soluble in the tea in the effective taste of the material reduced. Therefore, no matter what kind of tea, the taste of all the fresh teas are mellow and refreshing, and Chen Cha is pale and unpleasant.