Abstract
The objective of this study was to evaluate the performance of three stumps of Saccharomyces cerevisiae in the ethanol bioconversion of the diluted stems of sweet sorghum (Sorghum saccharatum L.) and to monitor the kinetic parameters of fermentation. Therefore, different initial concentrations of three stems from S. cerevisiae are used to ferment the juice. The juice obtained was formulated from one kilogram (1 kg) of stems of S. saccharatum and 0.5 L of distilled water. The monitoring of the kinetic fermentation parameters of the musts revealed that the best production yields (28.31±0.07 and 24.23±0.07 mL/kg) from bioethanol are obtained with the fermented mashes in the presence of the Angel brand super alcohol (3 and 5 g/L). This study showed that the stem of S. saccharatum L. constitutes a good fermentable biomass that could be valorized through the production of first-generation biofuel. Key words: Sorghum, Saccharomyces cerevisiae, fermentation, bioethanol.  
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