the enzyme was active at alkaline pH of 8.0 to 13.0, with optimum pH
9.0 (12.2 U/ml/min) indicating broad pH range for enzyme activity. Maximum amylase activity from
Bacillus sp.GM8901 with optimum pH 11.0 to 12.0 was reported by Kimet al.
(1995).Similarly,Yanget al. (2011) reportedthat the recombinant alkaline α-amylase from Bacillus alcalophilus in Bacillus subtiliswas stable at pH from7.0 to 11.0 with an optimum pH of 9.5.