Apple PPO was extracted from an apple acetone powder according to Yoruk, Hogsette, Rolle, and Marshall (2003). Enzyme activity was determined spectrophotometrically using chlorogenicacid as the substrate
Apple PPO was extracted from an apple acetone powderaccording to Yoruk, Hogsette, Rolle, and Marshall (2003). Enzymeactivity was determined spectrophotometrically using chlorogenicacid as the substrate