Use of sorghum straw (Sorghum bicolor) for second generation ethanol production: pretreatment and enzymatic hydrolysis

Agronomic biomass yields of forage sorghum BRS 655 presented similar results to other energy crops, producing 9 to 12.6 tons/ha (dry mass) of sorghum straw. The objective of this study was to evaluate the lignocellulosic part of this cultivar in terms of its potential in the different unit processes...

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Bibliographic Details
Published in:Química Nova 2013, Vol.36 (5), p.623-627
Main Authors: Cardoso, Wilton Soares, Tardin, Flávio Dessaune, Tavares, Gabriella Peterlini, Queiroz, Paula Viana, Mota, Samuel Sampaio, Kasuya, Maria Catarina Megumi, Queiroz, José Humberto de
Format: Article
Language:English
Subjects:
biomass
CHEMISTRY, MULTIDISCIPLINARY
energy crops
lignocellulosic
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Summary:Agronomic biomass yields of forage sorghum BRS 655 presented similar results to other energy crops, producing 9 to 12.6 tons/ha (dry mass) of sorghum straw. The objective of this study was to evaluate the lignocellulosic part of this cultivar in terms of its potential in the different unit processes in the production of cellulosic ethanol, measuring the effects of pretreatment and enzymatic hydrolysis. Three types of pre-treatments for two reaction times were conducted to evaluate the characteristics of the pulp for subsequent saccharification. The pulp pretreated by alkali, and by acid followed by delignification, attained hydrolysis rates of over 90%.
ISSN:0100-4042
1678-7064
DOI:10.1590/S0100-40422013000500002