EC Number   |
pH Minimum |
pH Maximum |
Reference |
|---|
    1.14.18.1 | -999 |
- |
monophenolase activity pH profile |
674090 |
| 1.14.18.1 | -999 |
- |
the experiment is carried out only under the conditions of temperature (8 and 25°C) and pH (3.0 and 10.0 units) used in the PPO study, conditions at which the enzyme shows no activity or only a reduced proportion of it |
687240 |
| 1.14.18.1 | -999 |
- |
the reaction is carried out at various temperatures and pH values with the substrates catechol, dopamine and chorogenic acid |
688046 |
| 1.14.18.1 | 3 |
5.5 |
- |
675101 |
| 1.14.18.1 | 3 |
7 |
activity range, drastic decrease in activity at pH 7.5 and above |
745136 |
| 1.14.18.1 | 3 |
8 |
PPO activity increases with pH from pH 3.0 to pH 7.0 and decreases slightly as pH increases from pH 7.0 to pH 8.0, but this general pattern is affected by the substrate, pH optima for PPO activity depend on the phenolic substrates, detailed overview |
746276 |
| 1.14.18.1 | 3 |
9 |
- |
686844 |
| 1.14.18.1 | 3 |
9 |
enzyme activity decreases below pH 5.0 or above pH 8.0, however, the enzyme is still active at pH 3.0 and pH 9.0. PPO remains 77.96, 60.05 and 52.24% of its original activity between pH 5.0 and pH 7.0 using catechol, L-tyrosine and pyrogallol as substrates, respectively, and loses more than 57% of activity when using caffeic acid, gallic acid and chlorogenic acid as substrates at their optimum pH values |
712618 |
| 1.14.18.1 | 3.4 |
6.3 |
over 50% of maximal activity within this range |
744824 |
| 1.14.18.1 | 3.5 |
6 |
about 40% of maximal activity at pH 3.4 and pH 6.0, catechol oxidase in Na-acetate buffer |
636403 |
