Consulta: creatorFacets:"Reis,Vanda Renata"
Registros recuperados: 3
Data/hora: 10/06/2024 04:50:40

Inhibition of bacteria contaminating alcoholic fermentations by killer yeasts
Provedor de dados: 52
Autores: Meneghin,Maria Cristina; Reis,Vanda Renata; Ceccato-Antonini,Sandra Regina.
The aim of this work was to study the in vitro antibacterial activity possessed by killer yeast strains against bacteria contaminating alcoholic fermentation (Bacillus subtilis, Lactobacillus plantarum, Lactobacillus fermentum and Leuconostoc mesenteroides), in cell X cell and cell X crude toxin preparations. The bacteria were not inhibited by any S. cerevisiae killer strains (5 out of 11). The inhibition caused by two crude toxin preparations (Trichosporon figueirae and Candida sp) against L. plantarum was surprisingly high but not in the same extent for B. subtilis, especially with three killer strains (Candida glabrata, Pichia anomala and Candida sp). L. mesenteroides and L. fermentum strains were neither inhibited in cell X cell nor crude toxin X cell...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteria; Killer yeasts; Alcohol; Fermentation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500006

Characteristics of Saccharomyces cerevisiae yeasts exhibiting rough colonies and pseudohyphal morphology with respect to alcoholic fermentation
Provedor de dados: 58
Autores: Reis,Vanda Renata; Bassi,Ana Paula Guarnieri; Silva,Jessica Carolina Gomes da; Ceccato-Antonini,Sandra Regina.
Among the native yeasts found in alcoholic fermentation, rough colonies associated with pseudohyphal morphology belonging to the species Saccharomyces cerevisiae are very common and undesirable during the process. The aim of this work was to perform morphological and physiological characterisations of S. cerevisiae strains that exhibited rough and smooth colonies in an attempt to identify alternatives that could contribute to the management of rough colony yeasts in alcoholic fermentation. Characterisation tests for invasiveness in Agar medium, killer activity, flocculation and fermentative capacity were performed on 22 strains (11 rough and 11 smooth colonies). The effects of acid treatment at different pH values on the growth of two strains ("52" -rough...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: S. cerevisiae; Ethanol; Fermentation; Indigenous yeasts.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400014

Bioethanol strains of Saccharomyces cerevisiae characterised by microsatellite and stress resistance
Provedor de dados: 58
Autores: Reis,Vanda Renata; Antonangelo,Ana Teresa Burlamaqui Faraco; Bassi,Ana Paula Guarnieri; Colombi,Débora; Ceccato-Antonini,Sandra Regina.
Abstract Strains of Saccharomyces cerevisiae may display characteristics that are typical of rough-type colonies, made up of cells clustered in pseudohyphal structures and comprised of daughter buds that do not separate from the mother cell post-mitosis. These strains are known to occur frequently in fermentation tanks with significant lower ethanol yield when compared to fermentations carried out by smooth strains of S. cerevisiae that are composed of dispersed cells. In an attempt to delineate genetic and phenotypic differences underlying the two phenotypes, this study analysed 10 microsatellite loci of 22 S. cerevisiae strains as well as stress resistance towards high concentrations of ethanol and glucose, low pH and cell sedimentation rates. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Stresses; Yeasts; Microsatellite; Contaminants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200268