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    • SCIENTIFIC PRODUCTION
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    • Dpto. Ingeniería Agrícola y Forestal
    • DEP42 - Artículos de revista
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    • DEP42 - Artículos de revista
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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/55877

    Título
    Assessment of the effect of nitrogen concentration on fermentation and selection of a highly competitive Saccharomyces cerevisiae strain for efficient ethanol production
    Autor
    Portero Barahona, Patricia
    Martín Gil, JesúsAutoridad UVA Orcid
    Martín Ramos, PabloAutoridad UVA Orcid
    Briones Pérez, Ana
    Carvajal Barriga, Enrique Javier
    Año del Documento
    2019
    Editorial
    MDPI
    Descripción
    Producción Científica
    Documento Fuente
    Energies, 2019, vol. 12, n. 13, 2614
    Abstract
    The optimum nitrogen concentration for media supplementation and strain dominance are aspects of key importance to the industrial production of ethanol with a view to reducing costs and increasing yields. In this work, these two factors were investigated for four ethanologenic Saccharomyces cerevisiae strains (CLQCA-INT-001, CLQCA-INT-005, CLQCA-10-099, and UCLM 325), selected from the screening of 150 isolates, mostly from Ecuadorian yeast biodiversity. The effect of nitrogen concentration was assessed in terms of cellular growth, glucose consumption and ethanol production, and the yeast strains’ dominance was evaluated in continuous co-fermentation with cellular recycling by mitochondrial DNA analyses. Among the four selected yeast strains under study, CLQCA-INT-005 presented the highest glucose consumption at a nitrogen supplement concentration as low as 0.4 g·L−1, attaining an ethanol yield of up to 96.72% in 24 h. The same yeast strain was found to be highly competitive, showing a dominance of 80% after four cycles of fermentation in co-culture. Thus, CLQCA-INT-005 may be deemed as a very promising candidate to be used both at pilot-plant scale and at industrial scale cellulosic ethanol production.
    Palabras Clave
    Ethanol
    Etanol
    Fermentation
    Fermentación
    Nitrogen
    Nitrógeno
    ISSN
    1996-1073
    Revisión por pares
    SI
    DOI
    10.3390/en12132614
    Version del Editor
    https://www.mdpi.com/1996-1073/12/13/2614
    Propietario de los Derechos
    © 2019 The Authors
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/55877
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
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    • DEP42 - Artículos de revista [291]
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    Universidad de Valladolid

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