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Electronic Journal of Biotechnology
Universidad Católica de Valparaíso
ISSN: 0717-3458
Vol. 13, No. 5, 2010
Bioline Code: ej10056
Full paper language: English
Document type: Research Article
Document available free of charge

Electronic Journal of Biotechnology, Vol. 13, No. 5, 2010

 en Production of ethanol from mesquite ( Prosopis juliflora check for this species in other resources (SW) D.C.) pods mash by Zymomonas mobilis check for this species in other resources and Saccharomyces cerevisiae check for this species in other resources
da Silva, Celiane Gomes Maia; Stamford, Tânia Lúcia Montenegro; de Andrade, Samara Alvachian Cardoso; de Souza, Evandro Leite & de Araújo, Janete Magali

Abstract

This study aimed to assess the use of mesquite pods hydrated mash as biomass for the growth of Saccharomyces cerevisiae check for this species in other resources UFEPEDA-1012 and Zymomonas mobilis check for this species in other resources UFEPEDA-205 and for ethanol production using a submerged fermentation. A 23 factorial design was used to analyze the effects of the type of microorganism, time of fermentation and condition of cultivation on the ethanol production in mesquite pods mash (30 g 100 mL-1). From the obtained results the hydrated mesquite pods mash presented as a good substrate for the growth of S. cerevisiae and Z. mobilis in comparison to the standard media. The effect that most affected the ethanol production was the type of microorganism. The highest ethanol concentration (141.1 gL-1) was found when Z. mobilis was cultivated in mesquite pods mash under static condition for 36 hrs. Ethanol production by S. cerevisiae was higher (44.32 gL-1) after 18 hrs of fermentation under static condition. According to these results, the mesquite pods could be known as an alternative substrate to be used for biotechnological purposes, mainly for ethanol production.

Keywords
ethanol, mesquite, Saccharomyces cerevisiae, Zymomonas mobilis.

 
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