Green tea is unoxidized, preserving pure catechins like EGCG. While black tea is fully oxidised, converting those catechins ...

Fluoride absorbed by the leaves is transferred to the leaf tips and edges, chelates with metal ions, and the complexes are deposited in the leaves. Fluoride can be transferred from old leaves to new ...

For years, Zhu Xuelan, an ethnic Yao woman, born into a family of tea makers in the remote Dayao Mountains of eastern Guangxi ...