Chemical inhibition of the contaminant Lactobacillus fermentum from distilleries producing fuel bioethanol
Document title: Chemical inhibition of the contaminant Lactobacillus fermentum from distilleries producing fuel bioethanol
Journal: Brazilian archives of biology and technology
Database: PERIÓDICA
System number: 000373474
ISSN: 1516-8913
Authors: 1
1
1
1
2
1
Institutions: 1Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Ciencias Biologicas, Assis, Sao Paulo. Brasil
2Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos, Campinas, Sao Paulo. Brasil
Year:
Season: May-Jun
Volumen: 57
Number: 3
Pages: 441-447
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Analítico, descriptivo
English abstract The purpose of this study was to determine the Minimum Inhibitory Concentration (MIC) of pure or mixed chemicals for Saccharomyces cerevisiae and Lactobacillus fermentum in the samples isolated from distilleries with serious bacterial contamination problems. The biocides, which showed the best results were: 3,4,4' trichlorocarbanilide (TCC), tested at pH 4.0 (MIC = 3.12 mg/l), TCC with benzethonium chloride (CBe) at pH 6.0 (MIC = 3.12 mg/l) and TCC mixed with benzalkonium chloride (CBa) at pH 6.0 (MIC = 1.53 mg /l). If CBa was used in sugar cane milling in 1:1 ratio with TCC, a 8 times reduction of CBa was possible. This formulation also should be tested in fermentation steps since it was more difficult for the bacterium to develop resistance to biocide. There was no inhibition of S. cerevisiae and there were only antibiotics as an option to bacterial control of fuel ethanol fermentation by S. cerevisiae
Disciplines: Biología,
Química
Keyword: Fermentación,
Biotecnología,
Bioproducción,
Etanol,
Contaminación bacteriana,
Lactobacillus fermentum,
Saccharomyces cerevisiae
Keyword: Biology,
Chemistry,
Fermentation,
Biotechnology,
Bioproduction,
Ethanol,
Bacterial pollution,
Lactobacillus fermentum,
Saccharomyces cerevisiae
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