Renewable Energy
from Floral Biomass: The Potential of Rosa indica in Biofuel Production
Kiri Bhavya, Raol Gopalkumar, Wardah Zuhour, Gajjar Priyanka and Sagar Priya
Res. J. Chem. Environ.; Vol. 29(7); 111-116;
doi: https://doi.org/10.25303/297rjce1110116; (2025)
Abstract
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.
