Polyphenol oxidase （PPO） is one of the most important oxidation-reduction enzyme in the tea tree physiology and tea processing,especially as the key enzyme during the enzymatic oxidation of theaflavins and its components.The current progress of enzymatic characteristic of polyphenol oxidase,tea quality relation with PPO, separation and purification of PPO enzymic synthesis of theaflavins and PPO isozyme were reviewed. To provide scientific basic for tea tree cultivar suitable evaluation system, efficient preparation of theaflavins and it...
