Renewable Energy from Floral Biomass: The Potential of Rosa indica in Biofuel Production

The present study explores the potential of Rosa indica flower waste as a renewable feedstock for bioethanol production. The bioethanol fermentation process was carried out using Saccharomyces cerevisiae. Both chemically pretreated and untreated rose flower waste hydrolysates were employed as primary carbon sources under submerged fermentation conditions. Process optimization was conducted using the One-Variable-at-a-Time (OVAT) approach to enhance bioethanol yield. The maximum bioethanol concentration of 28.2 g/L was achieved under optimal conditions: 6 g% substrate concentration, 1.5 g% of fructose supplementation, 0.5 mL % corn steep liquor as a nitrogen source, 4 mL % inoculum size, pH 5.5, temperature of 30 °C and an incubation period of 3 days. These results indicate that the optimized fermentation process significantly improves bioethanol production from rose flower waste, highlighting its potential as a sustainable biofuel source.