Avaliação do potencial de sorgo sacarino para a produção de etanol em comparação com a cana-de-açúcar.

Abstract

The demand for ethanol in Brazil has grown significantly after the creation of the PROALCOOL program, whose objective was to encourage ethanol production, thus reducing dependence on fossil fuels.Saccharin sorghum stands out because it has long sugar-rich stalks that can be the production of ethanol production. The IPC 467-4-2 - selection 2000; And IPA 8602600 - The main objective of the present work was to evaluate sorghum sorghum for ethanol production, evaluating its yield, productivity and fermentative efficiency for two sorghum sorghum varieties (IPA 467-4-2 - Ararapina 2010). Results obtained with a variety of sugarcane (RB 92579). Fermentation of the broth extracted to the companies as raw materials were carried out in 250 mL Erlenmeyer flasks with 150 mL of must as follows: 16 ° Brix, pH 5.0, 30 ° C, 100 rpm in shaker incubator (LUCA-223), 1.5 g of yeast Saccharomyces cerevisae is used (UFLA CA-11).The yields (Yp / s) obtained were 0.35 and 0.41 gethanol / gsugars for the sorghum varied, and 0.34 gethanol / gsugar for the sugar cane. For an efficiency of sorghum varieties were found values of 67.73%, 80.66%, and 66.02% for a variety of sugarcane. In terms of productivity, the sorghum obtained values of 1.57 and 1.41 g / L / h, and the cane 1.96 g / L / h. Sorghum is a promising raw material for the production of ethanol in the sugar cane crop.