Enzyme characterisation, isolation and cDNA cloning of polyphenol oxidase in the hearts of palm of three commercially important species

► Pupunha palmito has very low level of enzymatic oxidation. ► Pupunha palmito has very low PPO activity and PPO gene expression. ► Pupunha palmito has low phenol content with distinct HPLC phenol profile. ► Low oxidation in Pupunha is a combination of PPO activity and phenol content.