Fig. 5From: Utilization of acid pre-treated coconut dregs as a substrate for production of detergent compatible lipase by Bacillus stratosphericus Effect of surfactants on lipase activity. Residual activity of B. stratosphericus lipase incubated with various concentrations of a non-ionic surfactants (Tween-20, Tween-40, Tween-80 and Triton X-100); b anionic surfactant (SDS); and c cationic surfactant (CTAB) for 1 h at 50 °C was determined. Error bar represents one standard deviation about the mean (n = 3)Back to article page