Abstract

ARGOTE V, FRANCISCO EMILIO et al. EVALUATION OF ETHANOL PRODUCTION FROM MOLASSES WITH NATIVE STRAINS Saccharomyces cerevisiae. Rev.Bio.Agro [online]. 2015, vol.13, n.2, pp.40-48. ISSN 1692-3561.  https://doi.org/10.18684/BSAA(13)40-48.

This paper's main objective was to evaluate the production of ethanol from nine yeasts isolated and characterized in the Valley with a witness to a Brazilian ingenuity. The evaluation of variables such as temperature, oxygen, carbon dioxide and ethanol during the fermenting process was performed with the aid of HPLC Ecochamber equipment and technique to test the values found. The experimental design was the factor model, and the observation time was transverse in 48 hours, the sample unit was 600 mL of molasses solution with a concentration of 16°Brix whose pH was adjusted to 4,5 by addition of citric acid. The results were analyzed with the statistical program STATGRAPHICS 5.1 by ANOVA with a significance level of 0,05 and the differences with Tukey test. As a notable result was that the temperature and oxygen variables not statistically different values between 24 to 32°C and 6,7 to 20% of respective manner, while IC1, IP3, IP4, IP5 strains showed higher values in carbon dioxide production. With regard to ethanol varies, with higher production strains were T, IC1, IP3, IP4, IP6, IP5.

Keywords : Native yeasts; Fermentation; Witness; Efficiency.

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