Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/5427

TitleA bioareactor based on optical measurements for Baker's yeast fermentation
Author(s)Soares, Filomena
Gomes, Pedro
Correia, J. H.
KeywordsBioreactor
Yeast fermentation
Issue date15-Sep-2002
PublisherCzech Technical University (CTU)
CitationEUROPEAN CONFERENCE ON SOLID-STATE TRANSDUCERS, 16, Prague, 2002– “Eurosensors XVI : book of abstracts”. Prague : Czech Technical University, 2002. ISBN 80-01-02576-4.
Abstract(s)This paper presents a bioreactor for baker’s yeast fermentation. Small volumes are used in the bioreactor (< 100 ml) comparing with the macro setup (5 l). Biomass, ethanol and pH measurements are carried out by optical spectral analysis: the first two by optical absorption method and the last one is determined by fluorescence. HPTS (8 Hydroxypyrene-1,3,6-trisulfonic acid Trisodium salt) is chosen for pH measurement due to be the most suitable for precise and stable pH analysis (aqueous acid/base, biomass, ethanol and glucose solutions). A resolution of 0.2 in pH scale was achieved. Known biomass concentrations are measured with a stable pH=4 (no interference between the two measurements). Design and implementation of a bioreactor-on-a-chip for baker’s yeast fermentation is the final goal of this study.
TypeBook part
URIhttp://hdl.handle.net/1822/5427
ISBN80-01-02576-4
Peer-Reviewedyes
AccessOpen access
Appears in Collections:DEI - Artigos em atas de congressos internacionais

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