African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 5832

Full Length Research Paper

Chemico-technological parameters and maturation curves of sweet sorghum genotypes for bioethanol production

Lidyane Aline de Freita
  • Lidyane Aline de Freita
  • Department of Technology, Faculty of Agricultural and Veterinary Sciences, UNESP ? São Paulo State University, Jaboticabal, São Paulo, Brazil.
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Gustavo Henrique Gravatim Costa
  • Gustavo Henrique Gravatim Costa
  • Department of Technology, Faculty of Agricultural and Veterinary Sciences, UNESP ? São Paulo State University, Jaboticabal, São Paulo, Brazil.
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Igor dos Santos Masson
  • Igor dos Santos Masson
  • Department of Technology, Faculty of Agricultural and Veterinary Sciences, UNESP ? São Paulo State University, Jaboticabal, São Paulo, Brazil.
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Osania Emerenciano Ferreira
  • Osania Emerenciano Ferreira
  • Department of Technology, Faculty of Agricultural and Veterinary Sciences, UNESP ? São Paulo State University, Jaboticabal, São Paulo, Brazil.
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Miguel Angelo Mutton
  • Miguel Angelo Mutton
  • Department of Plant Production, Faculty of Agricultural and Veterinary Sciences, UNESP ? São Paulo State University, Jaboticabal, São Paulo, Brazil.
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Márcia Justino Rossini Mutton
  • Márcia Justino Rossini Mutton
  • Department of Technology, Faculty of Agricultural and Veterinary Sciences, UNESP ? São Paulo State University, Jaboticabal, São Paulo, Brazil.
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  •  Received: 21 April 2013
  •  Accepted: 07 November 2014
  •  Published: 11 December 2014

Abstract

The sweet sorghum has high potential for bioethanol production, especially for using the same industrial production complex and for being processed during sugarcane off-season. The objective of this study was to evaluate the chemico-technological characteristics of the following sorghum genotypes: CVSW80007, CVWS80147, and BRS610, which were grown in Jaboticabal – São Paulo, State, Brasil. The experimental design used was a completely randomized block in a split-split-plot desing. The main treatments were three genotypes, two stalk management systems (stalks with and without leaves and panicles), and the tertiary treatment were six harvesting times (100, 105, 110, 118, 135, and 160 days after sowing) with three replications. The soluble solids content (Brix), total reducing sugars (TRS), pH, total acidity, total phenolic compounds, and starch content of the juice extracted were evaluated. The results indicated that given the chemico-technological characteristics of the genotypes CVWS80147 and CVSW80007, they can be used as raw material for bioethanol production, with useful-period-of-industrialization (UPI) about 40 days, starting at 110 days after sowing. The better results with chemical-technological parameters is find at 118 to135 days after sowing.

 

Key words: Sorghum bicolor, technological quality, productivity, biometrics, bioethanol.