title: Fermentative capabilities and volatile compounds produced by Kloeckera/Hanseniaspora and Saccharomyces yeast strains in pure and mixed cultures during Agave tequilana juice fermentation.
abstract: The fermentative and aromatic capabilities of Kloeckera africana/Hanseniaspora vineae K1, K. apiculata/H. uvarum K2, and Saccharomyces cerevisiae S1 and S2 were studied in pure and mixed culture fermentations using Agave tequila juice as the culture medium. In pure and mixed cultures, Kloeckera/Hanseniaspora strains showed limited growth and sugar consumption, as well as low ethanol yield and productivity, compared to S. cerevisiae, which yielded more biomass, ethanol and viable cell concentrations. In pure and mixed cultures, S. cerevisiae presented a similar behaviour reaching high biomass production, completely consuming the sugar, leading to high ethanol production. Furthermore, the presence of S. cerevisiae strains in the mixed cultures promoted the production of higher alcohols, acetaldehyde and ethyl esters, whereas Kloeckera/Hanseniaspora strains stimulated the production of ethyl acetate and 2-phenyl ethyl acetate compounds.
authors.affiliation: Unidad de Biotecnología Industrial, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C., Av. Normalistas 800, Col. Colinas de la Normal, 44270, Guadalajara, Jalisco, Mexico, stxig@nottingham.ac.uk.
authors.forename: Ivonne Wendolyne
authors.initials: IW
authors.lastname: González-Robles
authors.forename: Mirna
authors.initials: M
authors.lastname: Estarrón-Espinosa
authors.forename: Dulce María
authors.initials: DM
authors.lastname: Díaz-Montaño
mesh_terms: D027882:Agave / Q000378:metabolism*; D000434:Alcoholic Beverages / Q000382:microbiology*; D005285:Fermentation; D055322:Kloeckera / Q000254:growth & development / Q000378:metabolism*; D059013:Microbial Consortia; D012440:Saccharomyces / Q000254:growth & development / Q000378:metabolism*; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D055549:Volatile Organic Compounds