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Background:Amylases play a vital role in biotechnological studies and rank an important position in the world enzyme market (25% to 33%). Bioprocess method of amylase production is more effective than the other sources, since the technique is easy, cost effective, fast, and the enzymes of required properties can be procured.Objectives:The current study aimed to report the characteristics of novel amylase producing bacterial strains isolated from Taptapani hot spring, Odisha, India.Materials and Methods:Bacterial strains were isolated by dilution plating method from the water samples collected from Taptapani Hot Spring, Odisha and screened for amylase production through starch hydrolysis. The bacterial isolates were identified morphologically, biochemically, and finally by 16S rDNA profiling.Results:Based on the morphological, physiological, biochemical characteristics and the molecular characterization, the isolates SS1, SS2, and SS3 were identified as Bacillus barbaricus, Aeromonas veroni, and Stenotrophomonas maltophilia, respectively. The approximate molecular weight of enzymes from SS1, SS2, and SS3 strains were 19 kDa, 56 kDa and 49 kDa, respectively.Conclusions:The current report isolates, characterizes, and demonstrates the novel heat-adapted amylase-producing bacteria SS1, SS2 and SS3 from Taptapani hot spring, indicating its potentiality and stability under acidic conditions.

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A preliminary investigation was performed about the presence of industrially important thermophilic bacteria in the hot springs and in its vicinity near Beramhapur, Orissa state, India. Out of 20 to 30 clones, the randomly picked up two clones of bacterium samples, one each from a soil and water, had been taken for the laboratory experiments. The cells isolated from soil and water samples stained gram negative, is rod shaped and non acid-fast organism, and positive for endospore staining. The temperature range for growth at a pH of 7.5 was between 37.5°C and 60°C with optimum growth at 50°C. Growth was inhibited by ampicillin, ciprofloxacin, cefadroxil and doxicycline, and cells showed positive protease, catalase and DNase activity, and lipase and oxidase activity was absent in them. The staining, morphological, biochemical, growth parameters, antibiotic studies proved that the bacteria are of gram negative and rod shaped nearer to the Escheritia coli cell type.

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