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In this work, it is investigated the kinetic properties of polyphenol oxidase (PPO) obtained from Lamium purpureum (red deadnettle).  4-methylcatechol was used as substrate in the characterization studies. Michaelis-Menten constant (KM) and maximum reaction velocity (Vmax) were calculated. Enzyme’s optimum pH value was found 7,5; optimum temperature value was found 10 ℃ . KM and Vmax values were calculated 2,9977 mM and 0,0087 EU/min respectively. PPO activity substantially was inhibited from sodium azide, thiourea, L-cysteine, ascorbic acid, benzoic acid, citric acid, 2-mercaptoethanol and I50 values were calculated each inhibitor.

Eflatun çiçekli ballıbaba (lamium purpureum) polifenol oksidaz enziminin karakterizasyonu ve inhibisyonu