You probably already know that all tea leaves naturally contain caffeine. However, depending on their oxidation level, there is more or less caffeine in them. Black teas, with the most oxidized tea leaves, have the highest level of caffeine. That level goes down in the less oxidized oolong, green and white teas.
Supercritical carbon dioxide is a fluid state of carbon dioxide where it is held at or above its critical temperature and critical pressure. Carbon dioxide behaves as a gas at ambient temperature and pressure conditions and behaves as a solid when frozen. If the temperature and pressure are increased from ambient...
Definitions differ, but decaffeination is generally taken to mean the removal of between 80% and 99% of caffeine from cocoa, coffee beans, and tea leaves. Ludwig Roselius, the chief of Kaffee...
