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Electronic Journal of Biotechnology
Universidad Católica de Valparaíso
ISSN: 0717-3458
Vol. 18, No. 1, 2015, pp. 10-15
Bioline Code: ej15003
Full paper language: English
Document type: Research Article
Document available free of charge

Electronic Journal of Biotechnology, Vol. 18, No. 1, 2015, pp. 10-15

 en Potential of giant reed ( Arundo donax check for this species in other resources L.) for second generation ethanol production
e Silva, Claudia Fernanda Lemons; Schirmer, Manoel Artigas; Maeda, Roberto Nobuyuki; Barcelos, Carolina Araújo & Pereira Jr., Nei

Abstract

Background: The production of second generation ethanol fromlignocellulosic biomasses that have not had their potential fully explored as feedstock is of great importance. Arundo donax check for this species in other resources is one these biomasses. It is a promising grassy plant to be used as a renewable resource for the production of fuels and chemicals, because of its fast growth rate, ability to grow in different soil types and climatic conditions. The present study evaluated its use as feedstock for the production of second generation ethanol.
Results: Initially its chemical characterization was carried out, and a protocol for fractioning the biomass through diluted acid pretreatment followed by alkaline pretreatmentwas developed, providing a solid fractionwhich was undergone to enzymatic hydrolysis reaching 42 g/L of glucose, obtained in 30 h of enzymatic hydrolysis. This partially delignified material was subjected to a simultaneous saccharification and fermentation (SSF) process, resulting in an ethanol concentration of 39 g/L at 70 h.
Conclusions: The fermentability of the pretreated biomasswas performed successfully through the conception of simultaneous saccharification and fermentation resulting in approximately 75 L of ethanol per ton of cellulose.

Keywords
Acid and alkaline pretreatments; Alcohol fermentation; Cellulase; Enzymatic hydrolysis; Lignocellulose

 
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