title: Bioethanol production from Gracilaria verrucosa, a red alga, in a biorefinery approach.
abstract: In this study, Gracilaria verrucosa, red seaweed has been used for production of agar and bioethanol. The algae harvested at various time durations resulted in extraction of ~27-33% agar. The leftover pulp was found to contain ~62-68% holocellulose, which on enzymatic hydrolysis yielded 0.87 g sugars/g cellulose. The enzymatic hydrolysate on fermentation with Saccharomyces cerevisiae produced ethanol with an ethanol yield of 0.43 g/g sugars. The mass balance evaluation of the complete process demonstrates that developing biorefinery approach for exploiting Gracilaria verrucosa, a red alga, could be commercially viable.
authors: Marine Biotechnology Laboratory, Department of Botany, University of Delhi, Delhi 110007, India.
authors: Savindra
authors: S
authors: Kumar
authors: Rishi
authors: R
authors: Gupta
authors: Gaurav
authors: G
authors: Kumar
authors: Dinabandhu
authors: D
authors: Sahoo
authors: Ramesh Chander
authors: RC
authors: Kuhad
mesh_terms: D000362:Agar / Q000378:metabolism; D056804:Biofuels; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002241:Carbohydrates / Q000032:analysis; D002480:Cellulase / Q000378:metabolism; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D044724:Gracilaria / Q000378:metabolism*; D006868:Hydrolysis; D012621:Seasons
chemical_list: D056804:Biofuels; D002241:Carbohydrates; D000431:Ethanol; D000362:Agar; D002480:Cellulase