Table 1. Microbial sources for alpha amylase production .

Source	Microbial type	Feature of alpha-amylase
Bacillus stearothermophilu s	Bacteria	Thermophile alpha-amylase
Geobacillus bacterium	Bacteria	Thermophile alpha-amylase
Nesterenkonia sp. strain F	Bacteria	Halophilic enzyme
Bacterium Pseudoalteromonas sp. M175	Bacteria	Cold-active alpha-amylase
Nocardiopsis aegypt ia	Actinomycetes	Cold-active alpha-amylase
Streptomyces fragil is	Actinomycetes	Cold-active alpha-amylase
Aspergillus nige r	Fungi	Commercial production
Aspergillus awamo ri	Fungi	Commercial production
Aspergillus oryzae	Fungi	Commercial production
Aspergillus flavu s	Fungi	Thermophile alpha-amylase