TEMPERATURE AND pH EFFECTS ON THE TREATMENT OF SACCHARINE SORGHUM BROTH

  • Gustavo Henrique Gravatim Costa
  • Jorge Otávio Missima FCAV/UNESP - Jaboticabal-SP
  • Vitor Teixeira FCAV/UNESP - Jaboticabal-SP
  • Miguel Angelo Mutton FCAV/UNESP - Jaboticabal-SP
  • Márcia Justino Rossini Mutton FCAV/UNESP - Jaboticabal-SP
Keywords: Bioenergy, Simple liming, Sugar-energy sector, Sorghum bicolor.

Abstract

The effects of different temperatures and pH on the treatment of saccharine sorghum broth are analyzed. Experimental design comprised sub-sub-plots and the main treatments consisted of different sorghum genotypes (BRS509, CV568 and BRS511); different secondary treatments at different pH (6.0; 6.5; 7.0); tertiary treatments at different temperatures: 65˚C, 80˚C and 100˚C. The chemical and technological characteristics of extracted and clarified broth were assessed. Genotypes BRS 509 and BRS511 had higher amounts of sugar than CV568. Broth at pH 6.0 triggered a lower removal rate of sugars and non-sugars in the broth. The heating of the broth at temperatures lower than 100˚C caused flotation of slug and the removal of starch to the detriment of heating at 100˚C, when slug sedimentation and non-removal of starch occurred. This may be metabolized by yeast when previously hydrolyzed by amylolytic enzymes. Treatment of broth at pH 6.0 and at 100˚C is the most adequate treatment for saccharine sorghum.

Author Biographies

Gustavo Henrique Gravatim Costa
Doutor em Microbiologia Agropecuária pela FCAV/UNESP. Docente na Universidade do Estado de Minas Gerais, Unidade Frutal, Minas Gerais, Brasil.
Jorge Otávio Missima, FCAV/UNESP - Jaboticabal-SP
Egresso do curso de Tecnologia em Biocombustíveis da FATEC Jaboticabal (SP), Brasil.
Vitor Teixeira, FCAV/UNESP - Jaboticabal-SP
Programa de Microbiologia Agropecuária, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Tecnologia, Universidade Estadual Paulista/UNESP, Jaboticabal (SP), Brasil
Miguel Angelo Mutton, FCAV/UNESP - Jaboticabal-SP
Doutor em Solos e Nutrição de Plantas pela ESALQ/USP. Docente na Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual “Júlio de Mesquita Filho”, Jaboticabal (SP), Brasil.
Márcia Justino Rossini Mutton, FCAV/UNESP - Jaboticabal-SP
Programa de Microbiologia Agropecuária, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Tecnologia, Universidade Estadual Paulista/UNESP, Jaboticabal (SP), Brasil.
Published
2018-03-29
Section
Agrobusiness