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Digestive proteolytic activity in larvae and adults of Bactrocera oleae was studied using specific substrates and inhibitors. The optimal pH for general proteolytic activity was 4 and 10 for soluble and membrane-bound fractions of larvae, and 9 for the soluble fraction of adults. The highest activities of general proteases were revealed at temperatures of 25°C and 45°C for both the soluble and membrane-bound...