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G V Ivashchenko

Publications and source records attributed to G V Ivashchenko.

3 recordsLinked to original sources
PubMedDate not supplied

[Use of Pseudomonas and Achromobacter species bacteria--degraders of surface-active agents--for detection and destruction of polycyclic aromatic hydrocarbons].

The developed biosensor models were based on the use of immobilized Pseudomonas and Achromobacter cells for polycyclic aromatic hydrocarbons and surfactants detection. The responses of biosensors based on bacteria-degraders of anionic surfactants for organic substrates, which related to different classes of surfactants, aromatic and policyclic aromatic hydrocarbons (PAH) were investigated. The sensor showed the highest sensitivity to anionic surfactants and PAH. The lower limit of sodium dodecyl sulfate detection is within a range of 0.25-0.5 mg/l (0.86-1.73 microM). The sensors showed the highest sensitivity to naphthalene (1-6 mM) and anthracene, fluorene, phenanthrene. All strains that have been investigated may be used as a receptor element of biosensors for detection of PAH and surfactants.

Alcaligenes↗
PubMedDate not supplied

[Comamonas testosteroni strain TI as a potential base for a microbial sensor detecting surfactants].

Strain Comamonas testosteroni TI, capable of degrading the nonionic surfactant (NIS) nonylphenolethoxylate (OP-10), was used for constructing a pilot cellular biosensor. The lower NIS detection limit for the biosensor was 0.25 mg/l. We studied the substrate specificity of the biosensor with respect to a wide range of organic compounds: surfactants, polyaromatic compounds (PAC), carbohydrates, alcohols, etc. It was shown that the biosensor based on Comamonas testosteroni TI did not respond to glucose, which was an advantage over the formerly described biosensor based on Pseudomonas rathonis T. The amplitude of the sensor response remained stable for 10 days.

Biosensing Techniques↗