The activities of
recombinant enzyme at higher pH indicate its alkaline nature. The
pH stability of the recombinant cellulase was higher than that of
cellulases produced by B. licheniformis AU 01 (Annamalai et al.,
2013), B. amyloliquefaciens DL-3 (Lee et al., 2008) and B. subtilis
subsp. subtilis A-53 (Kim et al., 2003) which were stable between
pH 7.0 and 9.0. The alkaline nature of enzyme might be due to alkaline
conditions prevailing in the soil.