Isolation and characterization of polyphenol oxidase from Sardinian poisonous and non-poisonous chemotypes of Ferula communis (L.)

► Ferula communis is a plant belonging to Apiaceae, widely present also in Sardinia. ► Two chemotypes, poisonous and non-poisonous of F. communis are present in the wild. ► Polyphenol oxidase was extracted, purified and characterized from both chemotypes. ► PPO from both chemotypes showed different behavior towards substrates and inhibitors.