title: Thermophilic amylase-producing bacteria from Vietnamese soils.
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.
authors.affiliation: Food Industries Research Institute, Km 8 Nguyen Trai Road, Thanh xuan, Dong da, Hanoi, Vietnam.
authors.forename: N T
authors.initials: NT
authors.lastname: Mai
authors.forename: D T
authors.initials: DT
authors.lastname: Giang
authors.forename: N T
authors.initials: NT
authors.lastname: Minh
authors.forename: V T
authors.initials: VT
authors.lastname: Thao