Effect of Acetaldehyde on Growth, Substrates, and Products by Leuconostoc mesenteroides ssp cremoris

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Abstract
Addition of 5.6 mmol/L of acetaldehyde to glucose broth led to an increase in the specific growth rate, a decrease in the specific glucose consumption rate, and an increase in the specific lactate production rate of Leuconostoc mesenteroides ssp cremoris. The amount of acetate produced was enhanced. For cells growing in broth containing glucose plus citrate, addition of acetaldehyde did not stimulate growth and did not significantly change the maxima of specific consumption rate of citrate and glucose; however, a change in kinetics was observed: the maxima appeared earlier in the presence of acetaldehyde than in its absence. In the absence of acetaldehyde, the specific citrate utilization rate was higher than the specific glucose consumption rate.