|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 70 van 143 gevonden artikelen
| Titel: |
MICROBIAL BIOSENSOR FOR ETHANOL DETERMINATION IN ALCOHOLIC BEVERAGES |
| Auteur: |
L. Rotariu Camelia Bala V. Magearu |
| Verschenen in: |
Analele Universitatii Bucuresti. Chimie |
| Paginering: | Jaargang XII (2003) nr. I-II pagina's 69-76 |
| Jaar: |
2003 |
| Inhoud: |
A new microbial biosensor based on an immobilized yeast cells (Saccharomycesellipsoideus) and Clark type oxygen electrode is described. Analytical determination is based onthe respiratory activity of the microorganism in presence of the analyte. Response time ofapproximately 2 min. for steady-state method and 30 s. for initial slope method was registered.The calibration curve for ethanol was linear in the 3 to 50 mM range. This biosensor was usedfor selective determination of ethanol in the presence of glucose using a second Teflonmembrane. The biosensor is practically specific to ethanol while the interference of glucose indetermination of ethanol for a biosensor with dialysis membrane is about 30%. Selectivebiosensor was used to determine ethanol concentration in alcoholic beverages. A goodcorrelation of the results between biosensor and spectrometric method with alcoholdehygrogenase was observed. |
| Uitgever: |
Ars Docendi Publishing House (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 70 van 143 gevonden artikelen
| << vorige | volgende >> |