An on-line system for glucose monitoring during fermentation was developed. The system employed flow-injection analysis coupled with a wall-jet electrode. Glucose was converted enzymatically in a tubular reactor packed with controlled pore glass beads containing immobilized glucose oxidase. The hydr
Development of a mass-producible glucose biosensor and flow-injection analysis system suitable for on-line monitoring during fermentations
โ Scribed by Stephen F. White; Ibtisam E. Tothill; Jeffrey D. Newman; Anthony P.F. Turner
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 610 KB
- Volume
- 321
- Category
- Article
- ISSN
- 0003-2670
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โฆ Synopsis
Screen printed ampemmetric glucose biosen~ors were constructed and optimised for use in a flow injection analysis (FIA) system. The sensors were fabricated using a catalytic metallised carbon based ink, allowing a working potential of + 350 mV (Ag/AgCI). Overall the sensors displayed a high degree of reliability and robustness. A linear response was obtained over the range 0.1 to 25 mM glucose with a slope of 1.35 + 0.20/tA/mM. The within electrode coefficient of variation at each concentration tested (n = 10) was less than 2% (or 0.1 mM for concentrations below 5 raM). In addition, it was demonstrated that a single sensor can be used in the HA system over a seven day period indicating a high level of operational staldlity, l'hese sensors fulfil the criteria necessary for a mass produced device, which would be suitable for the on-line monitoring of glucose consumption during microbial fermentation.
๐ SIMILAR VOLUMES
A flow injection analysis (FIA) biosensor system has been developed for on-line determination of glucose during mammalian cell cultivation. The culture sample was peristaltically withdrawn from the bioreactor and after cell separation by a steam sterilizable ceramic microfilter, the filtrate was con