Publications by authors named "Billy M dos Santos"
The consequences of Lactobacillus vini and Dekkera bruxellensis as contaminants of the sugarcane-based ethanol fermentation.
Rafael Barros de Souza Billy Manoel dos Santos Raquel de Fátima Rodrigues de Souza Paula Katharina Nogueira da Silva Brígida Thais Luckwu Lucena
J Ind Microbiol Biotechnol
November 2012
This work describes the effects of the presence of the yeast Dekkera bruxellensis and the bacterium Lactobacillus vini on the industrial production of ethanol from sugarcane fermentation. Both contaminants were quantified in industrial samples, and their presence was correlated to a decrease in ethanol concentration and accumulation of sugar. Then, laboratory mixed-cell fermentations were carried out to evaluate the effects of these presumed contaminants on the viability of Saccharomyces cerevisiae and the overall ethanol yield.
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- This study is the first to quantify and identify Lactic Acid Bacteria (LAB) in Brazilian bioethanol production, highlighting their potential to compete with yeast for nutrients.
- A total of 489 LAB isolates were collected from four distilleries, with LAB concentrations ranging significantly in fermentation tanks and crude sugar cane juice.
- The research found high diversity among LAB species, primarily Lactobacillus, with some strains exhibiting tolerance to high ethanol levels, indicating their possible role in affecting bioethanol efficiency.