Ethanolic fermentation of must mixed with molasses and corn mash

• Grant number: 16/23122-2
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: May 01, 2017
• End date: April 30, 2018
• Field of knowledge: Agronomical Sciences - Agricultural Engineering - Process Engineering of Agricultural Products
• Principal Investigator: Gustavo Henrique Gravatim Costa
• Grantee: Giovanni Uema Alcantara
• Host Institution: Pró-Reitoria de Pesquisa e Pós-Graduação. Universidade do Sagrado Coração (USC). Bauru , SP, Brazil

Abstract

As a result of the increased demand for ethanol in Brazil, new raw materials have been studied to complement the current production of this biofuel, which is carried out from the ethanol fermentation of the sugarcane juice. In this context, corn stands out, which presents a 120 day vegetative cycle, can be cultivated in sugarcane renovation areas, stored and processed in the off-season. However, between the end of the sugarcane harvest and the beginning of the corn harvest, it may occur in the fermentation dorns of musts prepared from residual molasses from the manufacture of sugar and corn paste. In this way, the goal of the work will be to evaluate the effects of mixed cane molasses and corn paste, in different concentrations, on the metabolic development of fermenting yeast. The experiment will be conducted at the Biomass and Bioenergy Laboratory/USC. The experimental design will be completely randomized, with 5 treatments and 8 replicates, composed by: 100% Must Molasses; 75% Must Molasses + 25% Must Maize; 50% Must Molasses + 50% Must Maize; 25% Must Molasses + 75% Must Maize; 100% Must Maize. The musts will be inoculated with selected industrial yeast CAT-1, being evaluated its physiology during fermentation process, as well as the chemical-technological characteristics of musts and wines. From these tests, it is expected to determine the effects of the processing of these raw materials on the production of ethanol, providing the producer with the adoption of technologies that can generate high industrial yields, contributing to the increase of the production of this biofuel in Brazil. (AU)