Figure 5From: A new acidophilic thermostable endo-1,4-β-mannanase from Penicillium oxalicum GZ-2: cloning, characterization and functional expression in Pichia pastorisOptimal pH and pH stability of purified rPoMan5A. The influence of pH on enzyme activity was determined in different 50 mM buffers using 0.5% locust bean gum as the substrate. The pH stability was shown as the remaining activity after incubation for 30 min at 60°C in buffers at various pH without the substrate. Data are the mean of three replicates, and bars indicate standard deviation of three replicates.Back to article page