Without these
procedures, very low ethanol yields were obtained,
ranging from 40 to 60% for A1240 UFMG, UNICAMP V1
and COMERCIAL-yeast strains. Oliveira et al. (2004)
com-pared different yeast strains for the production of
cachaça spirit (distillate from sugarcane) obtained yields
that ranged from 48.9 to 90.5% using a synthetic medium
containing 150 gl-1 of glucose as substrate.