On the Optimization of Fermentation Conditions for Enhanced Bioethanol Yields from Starchy Biowaste via Yeast Co-Cultures

The present study aims to assess the impact of type yeast consortium used during bioethanol production from starchy biowastes and determine optimal fermentation conditions for enhanced production. Three different strains, Saccharomyces cerevisiae, Pichia barkeri, Candida intermedia were in mono- co-cultures with pretreated waste-rice as substrate. optimization i.e., time, temperature, pH, inoculum size, was investigated small-scale batch cultures subsequently, applied scaling-up validation process a 7-L fermenter. It shown that co-culturing yeasts either couples or triples significantly efficiency process, ethanol yield reaching 167.80 ± 0.49 g/kg biowaste experiments