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Displacement of equilibrium in electroenzymatic reactor for acetaldehyde production using yeast alcohol dehydrogenase
Author(s) -
Lortie Robert,
Fassouane Aziz,
Laval JeanMarc,
Bourdillon Christian
Publication year - 1992
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260390206
Subject(s) - acetaldehyde , chemistry , alcohol dehydrogenase , electrochemistry , mass transfer , yeast , ethanol , redox , electrode , organic chemistry , chromatography , biochemistry
Electrochemical regeneration of NAD was performed in a bench scale reactor in which yeast alcohol dehydrogenase catalyzed the oxidation of ethanol. By recycling one of the products of the reaction, it was possible to displace the equilibrium and favor the production of acetaldehyde. The flow‐through electrode was made of graphite felt and had a specific area of 275 cm −1 . A mathematical model taking into account the enzymatic and electrochemical reaction rates as well as the mass transfer to the electrode was used to analyze the results. The limiting steps in the reactor are the electrochemical reaction for low potentials and the cofactor mass transfer for high potentials.