Usually, yeasts like Saccharomyces cerevisiae carry out
alcoholic fermentations [8]. However, some works have
shown that the bacterium Zymomonas mobilis provides
many advantages over the yeast, such as: higher theoretical
yields, higher ethanol tolerance and ability to grow under
anaerobic conditions [3,4e9]. It is able to produce ethanol via
an anaerobic version of the Entner-Doudoroff pathway [10,11