Registration of BOD using Paracoccus yeei bacteria isolated from activated sludge
| Autor: | Anatoly N. Reshetilov, S. V. Alferov, A. V. Machulin, O. A. Kamanina, L. D. Asulyan, V. A. Alferov, V. A. Arlyapov, N.Yu. Yudina, A N Shumsky |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Biochemical oxygen demand
Vinyl alcohol Chromatography biology Chemical structure N-Vinylpyrrolidone Environmental Science (miscellaneous) biology.organism_classification Agricultural and Biological Sciences (miscellaneous) Matrix (chemical analysis) chemistry.chemical_compound Activated sludge chemistry Original Article Biosensor Bacteria Biotechnology |
| Zdroj: | 3 Biotech |
| Popis: | This work investigated the properties of Paracoccus yeei VKM B-3302 bacteria isolated from activated sludge and immobilized in an N-vinylpyrrolidone-modified poly(vinyl alcohol) matrix. The developed hydrogel formed a network structure to enable the entrapment of microbial cells with their viability and biocatalytic properties preserved, which ensured the technological possibility of replicating expendable biosensor receptor elements. A new ratio of the components for the synthesis selected in this work enabled producing a copolymer of an earlier undescribed chemical structure, which can be efficiently used for immobilization of highly sensitive P. yeei bacteria. A biological oxygen demand (BOD) biosensor with these bacteria and matrix was shown to possess a long-time stability exceeding that described earlier, to have a broad substrate specificity and to exceed approximately tenfold the nearest analogues by its sensitivity and the lower boundary value of 0.05 mg/dm(3). The biosensor enabled assays of water samples initially attributed to pure samples (the BOD range, 0.05–5.0 mg/dm(3)). BOD assays of water samples from various sources showed the use of the receptor element of this composition to enable the data that closely correlated with the standard method (R(2) = 0.9990). |
| Databáze: | OpenAIRE |
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