Some Biochemical properties of polyphenoloxidase from spearmint (Mentha arvensis)

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Some Biochemical Properties of Polyphenoloxidase from Spearmint (Mentha arvensis)

Polyphenoloxidase (PPO; EC 1.14.18.1) extracted from Mentha arvensis leaves was isolated by (NH4)2SO4 precipitation and extensive dialysis. Its optimum pH and temperature varied with the substrate. The PPO showed activity with various diphenols. Km values were found 0.825, 0.928 and 7.41mM for caffeic acid, 4-methylcatechol and catechol, respectively. On heat-inactivation, half of the activity ...

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ژورنال

عنوان ژورنال: Brazilian Archives of Biology and Technology

سال: 2009

ISSN: 1516-8913

DOI: 10.1590/s1516-89132009000400025