Fig. 4From: Development of a whole-cell biocatalyst for diisobutyl phthalate degradation by functional display of a carboxylesterase on the surface of Escherichia colia The optimum temperature, b pH, and c Long-term stability of the whole cell biocatalyst. Residual activities were determined periodically for over a month. Values are the means of three replicates ± the standard deviationBack to article page