Abstract
Of 25 bacterial isolates from Vietnamese soils, two were identified asBacillus stearothermophilus and one asThermoactinomyces thalpophilus, both thermophilic, amylase-producing bacteria. Amylase activity was highest in the presence of cassava starch as carbon source and (NH4)2HPO4 as nitrogen source. The strains exhibit a high amylase productivity within the first 5 to 7 h of cultivation at 55°C. The crude enzyme had optima of pH 6.5 and 70°C.
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Mai, N.T., Giang, D.T., Minh, N.T.N. et al. Thermophilic amylase-producing bacteria from Vietnamese soils. World J Microbiol Biotechnol 8, 505–508 (1992). https://doi.org/10.1007/BF01201949
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DOI: https://doi.org/10.1007/BF01201949