Polyphenol oxidases (PPOs; EC 1.10. 3.2 or EC 1.14. 18.1) catalyzing the oxygen-
dependent oxidation of phenols to quinones are ubiquitous among angiosperms and …

Abstract Polyphenol oxidases (PPOs; EC 1.14. 18.1 or EC 1.10. 3.2) catalyze the oxidation
of phenolics to quinones, highly reactive intermediates whose secondary reactions are …

Polyphenol oxidases (PPOs) catalyze the oxidation of phenolics to quinones, the secondary
reactions of which lead to oxidative browning and postharvest losses of many fruits and …

Abstract Tomato (Lycopersicon esculentum Mill.) polyphenol oxidases (PPOs) are encoded
by a seven-member gene family that exhibits complex patterns of differential expression …

Polyphenol oxidases (PPO) catalyze the one-and two-electron oxidation of phenols to
quinones at the expense of O 2. PPOs are copper metalloproteins catalyzing the o …

A new polyphenol oxidase (PPO) named PPO II was purified from tobacco (Nicotiana
tobacum) by using acetone powder, ammonium sulfate precipitation, and column …

Plant polyphenol oxidases (PPOs) are ubiquitous copper metalloenzymes with a
biochemistry that has been known for more than a century. By the 1990s, biologists began to …

Polyphenol oxidases (PPOs), which catalyze the oxidation of phenolics to quinones, have
been reported to confer resistance to Pseudomonas syringae and are thought to be involved …

Plant polyphenol oxidases (PPOs) are widely distributed and well-studied oxidative
enzymes, and their effects on discoloration in damaged and diseased plant tissues have …

Polyphenol oxidases (PPOs) of plants are copper metalloproteins which catalyze the
oxidation of mono-and o-diphenols to o-diquinones. Although PPOs are believed to be …