Interaction of Saccharomyces cerevisiae-Lactobacillus fermentum-Dekkera bruxellensis and feedstock on fuel ethanol fermentation.

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  • Additional Information
    • Source:
      Publisher: Springer Country of Publication: Netherlands NLM ID: 0372625 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1572-9699 (Electronic) Linking ISSN: 00036072 NLM ISO Abbreviation: Antonie Van Leeuwenhoek Subsets: MEDLINE
    • Publication Information:
      Publication: 2004- : Berlin : Springer
      Original Publication: Wageningen, Netherland [etc.] Veenman [etc.]
    • Subject Terms:
      Ethanol* ; Fermentation* ; Industrial Microbiology*; Biofuels/*microbiology ; Dekkera/*metabolism ; Limosilactobacillus fermentum/*metabolism ; Saccharomyces cerevisiae/*metabolism; Acetic Acid ; Brazil ; Cell Count ; Coculture Techniques ; Dekkera/growth & development ; Glycerol ; Hydrogen-Ion Concentration ; Limosilactobacillus fermentum/growth & development ; Microbial Interactions ; Molasses ; Saccharomyces cerevisiae/growth & development ; Saccharum/metabolism ; Saccharum/microbiology ; Sucrose
    • Abstract:
      The alcoholic fermentation for fuel ethanol production in Brazil occurs in the presence of several microorganisms present with the starter strain of Saccharomyces cerevisiae in sugarcane musts. It is expected that a multitude of microbial interactions may exist and impact on the fermentation yield. The yeast Dekkera bruxellensis and the bacterium Lactobacillus fermentum are important and frequent contaminants of industrial processes, although reports on the effects of both microorganisms simultaneously in ethanolic fermentation are scarce. The aim of this work was to determine the effects and interactions of both contaminants on the ethanolic fermentation carried out by the industrial yeast S. cerevisiae PE-2 in two different feedstocks (sugarcane juice and molasses) by running multiple batch fermentations with the starter yeast in pure or co-cultures with D. bruxellensis and/or L. fermentum. The fermentations contaminated with D. bruxellensis or L. fermentum or both together resulted in a lower average yield of ethanol, but it was higher in molasses than that of sugarcane juice. The decrease in the CFU number of S. cerevisiae was verified only in co-cultures with both D. bruxellensis and L. fermentum concomitant with higher residual sucrose concentration, lower glycerol and organic acid production in spite of a high reduction in the medium pH in both feedstocks. The growth of D. bruxellensis was stimulated in the presence of L. fermentum resulting in a more pronounced effect on the fermentation parameters than the effects of contamination by each microorganism individually.
    • Grant Information:
      2011/17928-0 Fundação de Amparo à Pesquisa do Estado de São Paulo; 2012/16258-4 Fundação de Amparo à Pesquisa do Estado de São Paulo; 301701/2012-1 Conselho Nacional de Desenvolvimento Científico e Tecnológico
    • Contributed Indexing:
      Keywords: Bacteria; Ethanol; Molasses; Starter yeast; Sugarcane juice; Yeast contamination
    • Accession Number:
      0 (Biofuels)
      3K9958V90M (Ethanol)
      57-50-1 (Sucrose)
      PDC6A3C0OX (Glycerol)
      Q40Q9N063P (Acetic Acid)
    • Publication Date:
      Date Created: 20180301 Date Completed: 20180926 Latest Revision: 20221207
    • Publication Date:
      20240829
    • Accession Number:
      10.1007/s10482-018-1056-2
    • Accession Number:
      29488182