Abstract
Thermostable alkaline α-amylase producing bacterium Bacillus firmus CAS 7 strain isolated from marine sediment of Parangipettai coast grew maximally in both shake flasks. Potato peel was found to be a superior substrate for the production of α-amylase at 35°C, pH 7.5 and 1.0% of substrate concentrations. Under optimal conditions, B. firmus produced 676 U/ml of α-amylase which was optimally active at 50°C and pH 9.0. Key words: α-Amylase, potato peel substrate, Bacillus firmus CAS 7, thermostable, marine.
Highlights
Amylase is one among such enzymes that are very much important in the field of biotechnology
Thermostable alkaline -amylase producing bacterium Bacillus firmus CAS 7 strain isolated from marine sediment of Parangipettai coast grew maximally in both shake flasks
This study reports the ability of the strain Bacillus firmus CAS 7 to produce -amylase on potato peel and the optimization of the various parameters for the enzyme production
Summary
Amylase is one among such enzymes that are very much important in the field of biotechnology. It constitutes a class of industrial enzymes having approximately 25% of the enzyme market (Rao et al, 1998). Potato peel does not pose serious disposal and environmental problems, meaningful utilization of this nutrient-rich waste has not drawn much attention. During the course of this study, potato peel on an average was found to contain adequate amounts of nutrients, such as carbohydrates and protein, to support microbial growth. This study reports the ability of the strain Bacillus firmus CAS 7 to produce -amylase on potato peel and the optimization of the various parameters for the enzyme production
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