title: [Effect of nitrogen sources on biosynthesis, chemical composition, and structure of exopolysaccharides from Aureobasidium pullulans (de Bary) Arnaud].
abstract: The effect of the nitrogen source and the C/N ratio of the growth medium on the biosynthesis, composition, and structure of the exopolysaccharides (EPSs) of Aurebasidium pullulans (de Bary) Arnaud var. aubasidani Yurlova var. nov. and A. pullulans var. pullulans was studied. A. pullulans var. pullulans and A. pullulans var. aubasidani strains synthesized the maximum amounts of EPSs in the presence of, respectively, a reduced nitrogen source ((NH4)2SO4) and an oxidized nitrogen source (NaNO3) in the medium. The data presented confirm the validity of using the chemical composition and structure of the major cetavlon-precipitated fraction of A. pullulans EPSs for the characterization of intraspecies taxa.
authors.affiliation: St. Petersburg State Chemical Pharmaceutical Academy, Russia.
authors.forename: O A
authors.initials: OA
authors.lastname: Kudriashova
authors.forename: N A
authors.initials: NA
authors.lastname: Iurlova
mesh_terms: D003470:Culture Media; D003904:Mitosporic Fungi / Q000737:chemistry / Q000187:drug effects* / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*; D011134:Polysaccharides / Q000096:biosynthesis* / Q000737:chemistry; D013045:Species Specificity
chemical_list: D003470:Culture Media; D011134:Polysaccharides; D009584:Nitrogen