title: [Characteristics of Aspergillus sp. 55 alpha-amylase].
abstract: The influence of different factors on biosynthesis of extracellular alpha-amylase of Aspergillus sp. 55 grown at submerged cultivation has been studied. The optimal composition of nutrient medium (1 g of starch and 0.5 g of NaNO3 per 1 l) was chosen. The enzyme preparation has a wide pH optimum of activity (4.5-9.0), thermooptimum at pH 6.5 was 60 degrees C, at pH 4.5 and 9.0--50 degrees C. The inhibitory effect of coordinative germanium compounds on amylolytic activity of the preparation was shown. The paper is presented in Ukrainian.
authors: L D
authors: LD
authors: Varbanets'
authors: K V
authors: KV
authors: Avdiiuk
authors: N V
authors: NV
authors: Borzova
authors: O S
authors: OS
authors: Kharkevych
authors: N M
authors: NM
authors: Zhdanova
authors: I I
authors: II
authors: Seĭfullina
authors: O E
authors: OE
authors: Martsynko
authors: O H
authors: OH
authors: Piesarohlo
mesh_terms: D001230:Aspergillus / Q000187:drug effects / Q000201:enzymology* / Q000254:growth & development; D001431:Bacteriological Techniques; D018533:Biomass; D003470:Culture Media; D005857:Germanium / Q000737:chemistry / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry / Q000494:pharmacology; D013213:Starch / Q000378:metabolism; D013696:Temperature; D000516:alpha-Amylases / Q000096:biosynthesis* / Q000378:metabolism
chemical_list: D003470:Culture Media; D009942:Organometallic Compounds; D005857:Germanium; D013213:Starch; D000516:alpha-Amylases