
Keywords: 3,4-DHPEA-EA; aldehydic form of oleuropein aglycon; DL; dried leaves; FL; fresh leaves; p-NPG; p-nitrophenyl-β-d-glucopyronoside; p-NP; p-nitrophenol; PPO; polyphenoloxidase; RPE-FL; raw protein extract from fresh leaves; RPE-DL; raw protein extract from