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Bioresources and Bioprocessing
Fig. 1 | Bioresources and Bioprocessing

Fig. 1

From: Characterization and overexpression of a novel keratinase from Bacillus polyfermenticus B4 in recombinant Bacillus subtilis

Fig. 1

a Effect of pH on KerP activity. b pH stability of KerP. Enzyme activity was preserved at various pH levels between 0 and 48 h before assaying enzyme activity. pH 5.0 (filled circle), pH 6.0 (open circle), pH 7.0 (filled inverted triangle), pH 8.0 (open triangle), pH 9.0 (filled square), pH 10.0 (open square), pH 11.0 (filled diamond), pH 12.0 (open diamond). The enzyme activity was assayed with feather powders as the substrate at 60 °C for 1 h

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