Alkaline extrusion of wheat straw for bioethanol production by co-fermentation of Zymomonas mobilis and Pichia stipitis

• Grant number: 13/23525-1
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: March 10, 2014
• End date: November 09, 2014
• Field of knowledge: Agronomical Sciences - Food Science and Technology
• Principal Investigator: Crispin Humberto Garcia Cruz
• Grantee: Michelle Cardoso Coimbra
• Supervisor: Mercedes Ballesteros
• Host Institution: Instituto de Biociências, Letras e Ciências Exatas (IBILCE). Universidade Estadual Paulista (UNESP). Campus de São José do Rio Preto. São José do Rio Preto , SP, Brazil
• Institution abroad: Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Spain
• Associated to the scholarship: 11/07147-1 - Bioethanol production using banana and orange peels by co-fermentation of Zymomonas mobilis and Pichia stipitis, BP.DR

Abstract

Among the alternative sources for energy production the use of biomass has become quite interesting, especially in the direction of end uses with higher technological content such as electricity generation, steam production and transportation fuels. The production of fuel ethanol from lignocellulosic residues, such as cereal straw, may be an alternative of renewable energy source. Within this context, the aim of this work is to study the effect of alkaline extrusion followed by enzymatic hydrolysis in wheat straw for ethanol production by co-cultures of Zymomonas mobilis and Pichia stipitis. The wheat straw will be subjected to alkaline extrusion with 10% NaOH and 70°C. After extrusion, the wheat straw will undergo an enzymatic hydrolysis with commercial enzymes, to determine the best temperature, time and pH to release fermentable sugars. The hydrolyzate will be subjected to batch fermentation at 30°C for 72 hours. The effect of pH and agitation for bioethanol production will be evaluated by monocultures of Z. mobilis, monoculture of P. stipitis and co-cultures of Z. mobilis and P. stipitis. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

COIMBRA, MICHELLE CARDOSO; DUQUE, ALETA; SAEZ, FELICIA; MANZANARES, PALOMA; GARCIA-CRUZ, CRISPIN HUMBERTO; BALLESTEROS, MERCEDES. Sugar production from wheat straw biomass by alkaline extrusion and enzymatic hydrolysis. RENEWABLE ENERGY, v. 86, p. 1060-1068, FEB 2016. (13/23525-1)