exponential phase typical of the microbial kinetics, and the production
profile corresponding to a rapid fermentation caused by
adding a high concentration of initial inoculum in order to minimize
the production time, making the process more effective from
an economical point of view. The size of the inoculum, corresponding
to 2% dry matter, is the average number of yeasts recycled
by the process of Melle-Boinot applied industrially in the region. It
was observed 12% of alcohol production after 10 h of fermentation,
slightly higher to the value currently obtained in the local industry
at the same time (10%). Consequently, the scale up from lab scale
reactors to 10L bioreactors was successful both in biomass and
ethanol production using the yeast S. cerevisiae A2. Therefore, the
biomass production of yeast strains isolated naturally in sugary
environments is a key point in this sustainable circuit oriented to
achieve technological and industrial improvements.