Trends in Applied Sciences Research1819-35792151-7908Science International10.3923/tasr.2008.45.52PoornimaR. SahuMaloy Kumar SivakumarK. PushpavalliV. 1200831Actinomycetes were isolated from the sediment samples collected from the shrimp pond and examined for their α-amylase activity. Among many strains, the strain AE-19 which was tentatively identified as Streptomyces aureofasciculus showed higher α-amylase activity and it was taken for further study. Impact of various physical and chemical factors such as pH, temperatures, sodium chloride concentrations, carbon and nitrogen compounds on the α-amylase activity of S. aureofasciculus was studied. It was found that the enzyme activity was maximum at pH 9, temperature 45°C, 0.05% NaCl concentration, carbon compound mannose and nitrogen compound L-histidine. These findings suggest that the strain can effectively be used in large scale production of α-amylase enzyme for commercial purposes, after testing and ascertaining the strain`s capability in large scale fermentations.]]>Buchanan, R.E., N.E. Gibbons, S.T. Cowan, T.G. Holt and J. Liston et al.,19748th Edn.,Crueger, W. and A. Crueger, 1989Fogarty, W.M. and C.T. Kelly, 19805115170Hamilton, L.M., C.T. Kelly and W.M. Fogarty, 1999Bacillus sp. IMD 435.]]>352731Kathiresan, K., R. Balagurunathan and M.M. Selvam,20054271276Kundu, S.,20062006Lechevalier, M.P. and H. Lechevalier,197020435443Nipkow, A., G.J. Shen and J.G. Zeikus, 1989Clostridium thermosulfurogenes.]]>55689694Nonomura, H.,1974Streptomyces included in ISP.]]>527892Patel, A.K., K.M. Nampoothiri, S. Ramachandran, G. Szakacs and A. Pandey, 2005Aspergillus oryzae using spent-brewing grains.]]>4336341Sahu, M.K., K. Sivakumar, E. Poorani, T. Thangaradjou and L. Kannan,200728465474Saramma, A.V., B. Philip and P.G.V. Nair, 1994Vibrio Species.]]>1994pp: 31-43pp: 31-43Shirling, E.B. and D. Gottlieb,1966Streptomyces species.]]>16313340Sivakumar, K., M.K. Sahu and K. Kathiresan, 2005Streptomycetes, producing antibiotic, from a mangrove environment.]]>7457464Sivakumar, K., M.K. Sahu, P.R. Manivel and L. Kannan, 2006Chanos chanos (Forskal, 1775).]]>44256258Sodhi, H.K., K. Sharma, J.K. Gupta and S.K. Soni,2005Bacillus sp. PS-7 by solid state fermentation and its synergistic use in the hydrolysis of malt starch for alcohol production.]]>40525534Stamford, T.L.M., N.P. Stamford, L.C.B.B. Coelho and J.M. Arauja, 2001Nocardiapsis sp. endophyte of yam bean.]]>76137141Umamaheswary, K., M.K. Sahu, K. Sivakumar, T. Thangaradjou, D. Sumitha and L. Kannan,2005Mugil cephalus (Linnaeus, 1758).]]>23942947