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Mostrando ítems 1-20 de 22
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Biocontrol of postharvest Alternaria decay in table grapes from Argentina
Stocco, Antonella Fabia; Diaz, Mariano Emanuel; Rodriguez Romera, Mariela Carmen; Mercado, Laura Analia; Rivero, Maria Laura; Ponsone, María Lorena (Elsevier, 2019-03-29)Postharvest diseases cause considerable losses of fruit during transportation and storage. Synthetic fungicides are primarily used to control them; however, the recent trend is to shif toward safer and more eco-friendly ... -
Biodiversity of Saccharomyces cerevisiae populations in Malbec vineyards from the “Zona Alta del Río Mendoza” region in Argentina
Mercado, Laura Analia; Sturm, Maria Elena; Rojo, Maria Cecilia; Ciklic, Ivan Francisco; Martínez, Claudio; Combina, Mariana (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 ... -
Construction of low-ethanol-wine yeasts through partial deletion of the Saccharomyces cerevisiae PDC2 gene
Cuello, Raúl Andrés; Flores Montero, Karina Johana; Mercado, Laura Analia; Combina, Mariana; Ciklic, Ivan Francisco (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 ... -
Effect of different closure types and storage temperatures on the color and sensory characteristics development of Argentinian Torrontes Riojano white wines aged in bottles
Castellanos, Erika Romina; Jofre, Viviana Patricia; Fanzone, Martín Leandro; Assof, Mariela Vanesa; Catania, Anibal Alejandro; Diaz Sambueza, Alejandra Mariela; Heredia, Francisco José; Mercado, Laura Analia (Elsevier, 2021-06)During aging, most bottled white wines lose their distinctive organoleptic characteristics according to their storage conditions (closure, temperature, time). However, the effect of these factors on organoleptic characteristics ... -
Effect of low temperature fermentation on the yeast-derived volatile aroma composition and sensory profile in Merlot wines
Massera, Ariel Fernando; Assof, Mariela Vanesa; Sari, Santiago Eduardo; Ciklic, Ivan Francisco; Mercado, Laura Analia; Jofre, Viviana Patricia; Combina, Mariana (Elsevier, 2021-02)Different winemaking practices have been tried to improve wine quality and differentiate wine styles. Low temperature fermentation has been proposed to enhance the aroma profile in young red wines. The aim of this work was ... -
Effect of transient thermal shocks on alcoholic fermentation performance
Vargas Trinidad, Andrea Susana; Lerena, María Cecilia; Alonso Del Real, Javier; Esteve Zarzoso, Braulio; Mercado, Laura Analia; Mas, A.; Querol, Amparo; Combina, Mariana (Elsevier, 2019-10)Stuck and sluggish fermentations are among the main problems in winemaking industry leading to important economic losses. Several factors have been described as causes of stuck and sluggish fermentations, being exposure ... -
Effects of pH and sugar concentration in Zygosaccharomyces rouxii growth and time for spoilage in concentrated grape juice at isothermal and non-isothermal conditions
Rojo, Cecilia; Arroyo López, Francisco Noe; Lerena, María Cecilia; Mercado, Laura Analia; Torres, Adriana Mabel; Combina, Mariana (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 ... -
Evaluation of different chemical preservatives to control Zygosaccharomyces rouxii growth in high sugar culture media
Rojo, María Cecilia; Arroyo Lopez, Francisco Noe; Lerena, María Cecilia; Mercado, Laura Analia; Torres, Adriana Mabel; Combina, Mariana (Elsevier, 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 ... -
Growth response of Saccharomyces cerevisiae strains to stressors associated to the vine cycle
Gonzalez, Magali Lucia Rosa; Valero, Eva; Chimeno, Selva Valeria; Garrido Fernandez, Antonio; Rodriguez Gomez, Francisco; Rojo, Cecilia; Paolinelli, Marcos; Arroyo Lopez, Francisco Noe; Combina, Mariana; Mercado, Laura Analia (Elsevier, 2022-03-07)Saccharomyces cerevisiae isolates from grapes, soil, vine bark and buds collected at seven phenological stages of an annual growth cycle, were molecular typed by Microsatellite Multiplex PCR. Subsequently 30 S. cerevisiae ... -
Hybridization and spore dissection of native wine yeasts for improvement of ethanol resistance and osmotolerance
Sanchez, Maria Laura; Chimeno, Selva Valeria; Mercado, Laura Analia; Ciklic, Ivan Francisco (Springer, 2022-09)Global warming has a significant impact on different viticultural parameters, including grape maturation. An increment of photosynthetic activity generates a rapid accumulation of sugars in the berry, followed by a dehydration ... -
Impact on Sensory and Aromatic Profile of Low Ethanol Malbec Wines Fermented by Sequential Culture of Hanseniaspora uvarum and Saccharomyces cerevisiae Native Yeasts
Mestre Furlani, Maria Victoria; Maturano, Yolanda Paola; Gallardo, Candelaria; Combina, Mariana; Mercado, Laura Analia; Toro, Maria Eugenia; Carrau, Francisco; Vazquez, Fabio; Dellacassa, Eduardo (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
Torres Palazzolo, C.; Cuello, Raúl Andrés; Gonzalez, Magali Lucia Rosa; Guevara, Felipe; Ponsone, María Lorena; Mercado, Laura Analia; Martinez, Claudio; Combina, Mariana; Rojo, Maria Cecilia (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 ... -
Inoculation strategies to improve persistence and implantation of commercial S. cerevisiae strains in red wines produced with prefermentative cold soak
Maturano, Yolanda Paola; Lerena, María Cecilia; Mestre, María Victoria; Casassa, Luis Federico; Toro, Maria Eugenia; Mercado, Laura Analia; Combina, Mariana (Elsevier, 2018)Prefermentative cold soak is a winemaking technique aimed at enhancing aroma and colour extraction in red wines. This study aimed at evaluating implantation and persistence rates of commercial active dry yeast strains (ADY) ... -
Malolactic fermentation induced by Lactobacillus plantarum in Malbec wines from Argentina
Lerena, María Cecilia; Sari, Santiago Eduardo; Mercado, Laura Analia; Krieger-Weber, Sibylle; Combina, Mariana; Rojo, María Cristina (2016)The current market requirements to obtain wines with enhanced complexity and varietal character propose the finding of new microorganisms capable of driving the malolactic fermentation (MLF) and contributing to new and ... -
Optimization of fermentation-relevant factors: A strategy to reduce ethanol in red wine by sequential culture of native yeasts
Maturano, Yolanda Paola; Mestre Furlani, Maria Victoria; Kuchen, Benjamín; Toro, Maria Eugenia; Mercado, Laura Analia; Vazquez, Fabio; Combina, Mariana (2018-08-14)Current consumer preferences are determined by well-structured, full-bodied wines with a rich flavor and with reduced alcohol levels. One of the strategies for obtaining wines with reduced ethanol content is sequential ... -
Persistence and reservoirs of Saccharomyces cerevisiae biodiversity in different vineyard niches
Gonzalez, Magali Lucia Rosa; Sturm, Maria Elena; Lerena, Maria Cecilia; Rojo, Maria Cecilia; Chimeno, Selva Valeria; Combina, Mariana; Mercado, Laura Analia (Elsevier, 2019-09)Highlights: S. cerevisiae vineyard populations dynamically changed during grape growth cycle. Strains from ripe grapes showed highest diversity and distribution across vineyard. Buds in winter and bark from sprouting to ... -
Populations of Saccharomyces cerevisiae in Vineyards: Biodiversity and Persistence Associated with Terroir
González, Magalí Lucía; Chimeno, Selva Valeria; Sturm, Maria Elena; Becerra, Lucía Maribel; Lerena, María Cecilia; Rojo, María Cecilia; Combina, Mariana; Mercado, Laura Analia (MDPI, 2023-03)The origin terroir provides distinctive characteristics for wines, in relation to soil, climate, oenological practices, etc. Hence, the characterization of each wine region by multiple aspects wouldallow differentiation ... -
Probabilistic model for the spoilage wine yeast Dekkera bruxellensis as a function of pH, ethanol and free SO2 using time as a dummy variable
Sturm, Maria Elena; Arroyo López, Francisco Noé; Garrido Fernandez, Antonio; Querol, Amparo; Mercado, Laura Analia; Ramírez, María Laura; Combina, Mariana (Elsevier, 2014-01-17)The present study uses a probabilistic model to determine the growth/no growth interfaces of the spoilage wine yeast Dekkera bruxellensis CH29 as a function of ethanol (10–15%, v/v), pH (3.4–4.0) and free SO2 (0–50 mg/l) ... -
Reduction of Zygosaccharomyces rouxii Population in Concentrated Grape Juices by Thermal Pasteurization and Hydrostatic High Pressure Processing
Rojo, María Cecilia; Cristiani, M.; Szerman, Natalia; Gonzalez, M.L.; Lerena, María Cecilia; Mercado, Laura Analia; Combina, Mariana (Springer, 2019-02)Zygosaccharomyces rouxii is the most frequent spoilage yeast species detected in concentrated grape juice. In order to reduce Z. rouxii populations and consequently extend the microbiological shelf life of this product, ... -
Selection of non-Saccharomyces yeasts to be used in grape musts with high alcoholic potential: A strategy to obtain wine with reduced etanol content
Mestre Furlani, Maria Victoria; Maturano, Yolanda Paola; Combina, Mariana; Mercado, Laura Analia; Toro, Maria Eugenia; Vazquez, Fabio (2017)Ethanol content of wine has increased over the last decades as consequence of searching phenolic maturity, requiring increased grape maturity. This may result in the production of wines with excessive alcohol levels ...