Research Article

Streptomyces flavogriseus HS1: Isolation and Characterization of Extracellular Proteases and Their Compatibility with Laundry Detergents

Figure 4

Effect of pH on activity (a) and stability (b) of the crude protease from Streptomyces flavogriseus HS1. The protease activity was assayed in the pH range of 5.0–12.0 using buffers of different pH values at 50°C. The maximum activity obtained from pH 7.0 was considered as 100% activity. The pH stability of the Streptomyces flavogriseus HS1 crude enzyme was assayed in the rage of 5.0–12.0 and determined by incubating the crude protease in different buffers for 1 h at 25°C and the residual activity was determined at pH 7.0 and 50°C. The proteolytic activity before incubation was taken as 100%.
345980.fig.004a
(a)
345980.fig.004b
(b)