Fig. 4From: Electrode-assisted acetoin production in a metabolically engineered Escherichia coli strainAcetoin production from glucose with nitrate as the terminal electron acceptor. The quadruple mutant carrying the vector for the acetoin production showed a strong increase in acetoin formation with nitrate as the terminal electron acceptor compared to a DH5αZ1 strain with the same vector. The acetoin yield reached a value of 0.9 mol/mol glucose consumedBack to article page