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Stability of pig and fish pepsins at 50 °C and pH 5.3. Aliquots were removed at appropriate times and the residual activity was measured at pH 2.0 and 37 °C using hemoglobin as substrate.
| Enzyme | Half-life time (min) |
|---|---|
| Pig pepsin | 310±1.55 |
| Fish pepsin A1 | 270±1.35 |
| Fish pepsin A2 | 72±0.46 |
