Browsing by Subject "Yeasts"
Now showing items 1-20 of 37
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Antifungal activity of native yeasts from different microenvironments against Colletotrichum gloeosporioides on ripe olive fruits
(2017-03)Anthracnose is a fungal disease caused by Colletotrichum species, which mainly affects olive fruits during ripening. The use of yeasts from related and unrelated microenvironments in the control of plant pathogens has ... -
Biocontrol of Botrytis cinerea in table grapes by non-pathogenic indigenous Saccharomyces cerevisiae yeasts isolated from viticultural environments in Argentina
(Elsevier, 2012-02)Botrytis cinerea, the causal agent of gray mold, is an important disease of grapes. Yeasts are members of the epiphytic microbial community on surfaces of fruits and vegetables and because some yeasts inhibit fungi they ... -
Biocontrol of fungi isolated from sour rot infected table grapes by Saccharomyces and other yeast species
(2013)Sour rot is an important disease of grapes caused by an etiologic complex of microorganisms in which filamentous fungi play a key role. Yeasts are used for biocontrol of pathogenic filamentous fungi on fruits. The major ... -
Biodiversity of Saccharomyces cerevisiae populations in Malbec vineyards from the “Zona Alta del Río Mendoza” region in Argentina
(Elsevier, 2011-12-15)The “Zona Alta del Río Mendoza” (ZARM) is the major Malbec grape viticulture region of Argentina. The aim of the present study was to explore Saccharomyces cerevisiae biodiversity in ZARM vineyards. Interdelta PCR and RFLP ... -
Brewer’s yeast, Saccharomyces cerevisiae, enhances attraction of two invasive yellowjackets (Hymenoptera: Vespidae) to dried fruit and fruit powder
(2017-09)The German yellowjacket, Vespula germanica F., and common yellowjacket, Vespula vulgaris L. (Hymenoptera: Vespidae), are pests of significant economic, environmental, and medical importance in many countries. There is a ... -
Caracterización de los reservorios y la biodiversidad de levaduras Saccharomyces cerevisiae en un viñedo comercial durante un ciclo fenológico completo de la vid
(Asociación Argentina de Microbiología, 2021-10-25)La vitivinicultura constituye una actividad de amplia tradición e impacto económico en Mendoza. La Zona Alta del Río Mendoza (ZARM) es la principal región donde se cultiva el Malbec, vino emblemático argentino. ... -
Construction of low-ethanol-wine yeasts through partial deletion of the Saccharomyces cerevisiae PDC2 gene
(2017)We propose an alternative GMO based strategy to obtain Saccharomyces cerevisiae mutant strains with a slight reduction in their ability to produce ethanol, but with a moderate impact on the yeast metabolism. Through ... -
Culture-dependent and independent techniques applied to monitor yeast species on cold soak at different temperatures in winemaking
(2016)Transformation of grape must into wine is a process that may vary according to the consumers' requirements. Application of cold soak prior to alcoholic fermentation is a common practice in cellars in order to enhance flavor ... -
Diseminación de cepas de Brettanomyces bruxellensis en bodega durante la conservación en barricas
(Asociación Latinoamericana de Microbiología, 2021-10-20)La alteración del vino por levaduras contaminantes representa un serio problema para la industria causando importantes pérdidas económicas. Brettanomyces bruxellensis ha sido descripta como la principal levadura contaminante ... -
Efecto combinado de cepa de levadura y Terroir en vinos Malbec de Mendoza = Combined effect of yeast strains and Terroir on Malbec wines from Mendoza
(E3S Web of Conferences, 2018-08)Las cepas de levaduras producen atributos distintivos en los vinos, como así también, la uva proveniente de diferentes zonas puede modificar el flavour del vino. El objetivo del presente trabajo fue evaluar el efecto ... -
Efecto de la inoculación de levaduras seleccionadas y de la concentración de nitrógeno fácilmente asimilable sobre las características de hidromieles
(Asociación Argentina de Microbiología, 2021-10-21)Argentina es el quinto productor y el segundo exportador mundial de miel a granel. Un producto atractivo para el agregado de valor en miel es la elaboración de hidromiel. Esta bebida se obtiene mediante la fermentación ... -
Effect of xantham gum, steviosides, clove, and cinnamon essential oils on the sensory and microbiological quality of a low sugar tomato jam
(2016)The partial or total decrease of sugar content in the formulation of jams affects their physical, chemical and microbiological stability. In order to minimize these technological problems, we studied the effect of xanthan ... -
Effects of pH and sugar concentration in Zygosaccharomyces rouxii growth and time for spoilage in concentrated grape juice at isothermal and non-isothermal conditions
(2014-04)The effect of pH (1.7–3.2) and sugar concentration (64–68 °Brix) on the growth of Zygosaccharomyces rouxii MC9 using response surface methodology was studied. Experiments were carried out in concentrated grape juice ... -
Enzymatic activities produced by mixed Saccharomyces and non-Saccharomyces cultures : relationship with wine volatile composition
(2015-11)During certain wine fermentation processes, yeasts, and mainly non-Saccharomyces strains, produce and secrete enzymes such as b-glucosidases, proteases, pectinases, xylanases and amylases. The effects of enzyme activity ... -
Evaluación de una levadura nativa como potencial agente de biocontrol sobre distintos patógenos de importancia agrícola
(Asociación Argentina de Microbiología, 2019-11-14)Las levaduras pueden desarrollarse rápidamente y establecerse en la superficie de hojas, frutos y flores, inhibiendo el desarrollo de microorganismos patógenos. Son genéticamente estables, efectivas a bajas concentraciones, ... -
Evaluation of different chemical preservatives to control Zygosaccharomyces rouxii growth in high sugar culture media
(2015-04)Zygosaccharomyces rouxii is an osmophilic yeast responsible for a large amount of economic loss in high sugar food production. Statistical modelling techniques were used in the present study to assess the individual effects ... -
Evaluation of the effectiveness of potential biocontrol yeasts against black sur rot and ochratoxin A occurring under greenhouse and field grape production conditions
(2016)The efficacy of two strains of Lanchancea thermotolerans in preventing the growth and ochratoxin A (OTA) accumulation of ochratoxigenic fungi under greenhouse and field conditions were evaluated during three consecutive ... -
Genome-wide gene expression of a natural hybrid between Saccharomyces cerevisiae and S. kudriavzevii under enological conditions
(Elsevier, 2012-07-16)The species Saccharomyces cerevisiae plays a predominant role in the wine making process. However, other species have been associated with must fermentation, such as Saccharomyces uvarum (Saccharomyces bayanus var. uvarum) ... -
Impact on Sensory and Aromatic Profile of Low Ethanol Malbec Wines Fermented by Sequential Culture of Hanseniaspora uvarum and Saccharomyces cerevisiae Native Yeasts
(MDPI, 2019-07)It is well known that high ethanol levels in wines adversely affect the perception of new wine consumers. Moreover, numerous issues, such as civil restrictions, health risk and trade barriers, are associated with high ... -
Incidence of osmophilic yeasts and Zygosaccharomyces rouxii during the production of concentrate grape juices
(2017)Zygosaccharomyces rouxii is the main spoilage yeast of grape juice concentrates. Detection and identification of Z. rouxii during the production of grape juice concentrate is critical to prevent spoilage in the final ...