title: [BIOCONVERSION OF CRUDE GLYCEROL AND MOLASSES MIXTURE IN BIOSURFACTANTS OF NOCARDIA VACCINII IMB B-7405].
abstract: The possibility of replacing glucose and pure glycerol in mixed substrates for surtace-active substances (SAS, biosurfactants) biosynthesis of Nocardia vaccinii IMB B-7405 on molasses (sugar production waste) and crude glycerol (by-product of biodiesel production) was established. It was established that the increasing concentration of crude glycerol to 6% in mixture with 1.0% molasses was accompanied by increase of amount of SAS synthesized more than twice, and the increasing content of molasses to 3.0% in mixture with 1.0% crude glycerol--by some decrease in the level of surfactant as compared to that in a medium containing 1.0% monosubstrates. It was shown that the increasing concentration of sodium nitrate to 2-fold in medium cultivation of N. vaccinii IMB B-7405 allowed to increase to 7.0% content of grude glycerol in mixture with 1.0% molasses. Under such conditions of cultivation concentration of exocellular SAS synthesized was 7,5 g/l, that to 1,3 fold higher than in basic medium with a lower content of nitrogen source.
authors.forename: T P
authors.initials: TP
authors.lastname: Pirog
authors.forename: N V
authors.initials: NV
authors.lastname: Kudrya
authors.forename: T A
authors.initials: TA
authors.lastname: Shevchuk
authors.forename: K A
authors.initials: KA
authors.lastname: Beregova
authors.forename: G O
authors.initials: GO
authors.lastname: Iutynska
mesh_terms: D001711:Biotransformation; D003470:Culture Media / Q000737:chemistry; D005285:Fermentation; D005947:Glucose / Q000378:metabolism*; D005990:Glycerol / Q000378:metabolism*; D007218:Industrial Microbiology; D007700:Kinetics; D008965:Molasses / Q000032:analysis*; D009566:Nitrates / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D009615:Nocardia / Q000378:metabolism*; D013501:Surface-Active Agents / Q000378:metabolism*
chemical_list: D003470:Culture Media; D009566:Nitrates; D013501:Surface-Active Agents; C031618:sodium nitrate; D005947:Glucose; D009584:Nitrogen; D005990:Glycerol