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Mostrando ítems 1-20 de 29
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Application of vine-shoot chips during winemaking and aging of Malbec and Bonarda wines
Fanzone, Martín Leandro; Catania, Anibal Alejandro; Assof, Mariela Vanesa; Jofre, Viviana Patricia; Prieto, Jorge Alejandro; Gil Quiroga, Daniela; Lacognata Sottano, Juan; Sari, Santiago Eduardo (MDPI Publication, 2021-07)The growing demand in recent years for sustainable wine production has led to the management of waste and by-products. Among them, vine-shoots could be used as additives comparable to the oak fragments widely employed in ... -
Caracterización química del aceite de oliva virgen extra de 18 variedades presentes en el banco de germoplasma de Junín
Banco, Adriana Pamela (Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, 2017)En Argentina, se cultiva un escaso número de variedades de olivo, introducidas por los inmigrantes europeos, quienes imitaban las tradiciones de su lugar de origen. En nuestro país, algunas de esas variedades presentan ... -
Carotenoid profile produced by Bacillus licheniformis Rt4M10 isolated from grapevines grown in high altitude and their antioxidant activity
Cohen, Ana Carmen; Dichiara, Elisa; Jofre, Viviana Patricia; Antoniolli, Andrea; Bottini, Ambrosio Rubén; Piccoli, Patricia Noemí (2018-07)Bacillus licheniformis (BL) strains are used for industrial production of exoenzymes, antibiotics and secondary metabolites, and also serve as probiotics. Some strains sequester heavy metals, promoting plant growth or ... -
Characterization of the phenolic fraction from Argentine wine and its effect on viability and polysaccharide production of Pediococcus pentosaceus
Stivala, Maria Gilda; Villeco, Margarita Beatriz; Fanzone, Martín Leandro; Jofre, Viviana Patricia; Aredes Fernandez, Pedro Adrian (2015-12)Objectives: To qualitatively and quantitatively characterize a low molecular weight phenolic fraction (LMF) of Malbec wine from Cafayate, Argentina, and evaluate its effect on viability and exopolysaccharide production of ... -
Characterization, antibacterial and biological activities of phenolic fraction of argentinean red wines
Stivala, Maria Gilda; Villecco, Margarita Beatriz; Fanzone, Martín Leandro; Jofre, Viviana Patricia; Rodriguez Vaquero, Maria Jose; Aredes Fernández, Pedro Adrián (Bentham Open, 2014-09)For the first time, the qualitative and quantitative characterization of phenolic compounds of lower molecular weight fraction (LMF) were evaluated in commercial Cabernet Sauvignon (CS) and Tannat (T) wines varieties ... -
Combination of pre-fermentative and fermentative strategies to produce Malbec wines of lower alcohol and pH, with high chemical and sensory quality
Fanzone, Martín Leandro; Sari, Santiago Eduardo; Mestre Furlani, Maria Victoria; Catania, Anibal Alejandro; Catelén, María J.; Jofre, Viviana Patricia; González-Miret, María Lourdes; Combina, Mariana; Vazquez, Fabio; Maturano, Yolanda Paola (International Viticulture and Enology Society (IVES), 2020)The climatic conditions in some wine regions imply in many cases the important delay in the harvest date to achieve an appropriate phenolic maturity in red grape varieties, leading to wines with high pH and alcohol content. ... -
Combined effect of prefermentative cold soak and SO2 additions in Barbera D’Asti and Malbec wines : anthocyanin composition, chromatic and sensory properties
Casassa, Luis Federico; Bolcato, Esteban Augusto; Sari, Santiago Eduardo; Fanzone, Martín Leandro; Jofre, Viviana Patricia (2016)The effects of prefermentative cold soak (CS) combined with two SO2 additions (50 and 100 mg L1) on the anthocyanin composition, chromatic properties and sensory attributes of Barbera D'Asti and Malbec wines were studied. ... -
Determinación simultánea de carotenoides y fenoles en subproductos agroalimentarios: Microextracción Líquido-Sólido Asistida por Ultrasonido optimizada por metodologías de diseño experimental
Jofre, Viviana Patricia; Assof, Mariela Vanesa; Vargas, Eliana Vanina; Fanzone, Martín Leandro (Universidad Juan Agustín Maza, 2020)En el presente trabajo se desarrolló un nuevo método de microextracción líquido-sólido asistido por ultrasonido para determinar biocompuestos en subproductos agroalimentarios. El método analítico propuesto para extraer ... -
Determination of alkaloids in onion nectar by micellar electrokinetic chromatography
Soto Vargas, Verónica Carolina; Jofre, Viviana Patricia; Galmarini, Claudio Romulo; Silva, Maria Fernanda (2016)Nectar is the most important floral reward offered by plants to insects. Minor components such as alkaloid compounds in nectar affect bee foraging, with great influence in seed production. CE is an advantageous tool for ... -
Direct analysis of néctar and floral volatile organic compounds in hybrid onions by HS-SPME/GC-MS: Relationship with pollination and seed production
Soto Vargas, Verónica Carolina; Maldonado, Irma Beatriz; Jofre, Viviana Patricia; Galmarini, Claudio Romulo; Silva, Maria Fernanda (2016)In this study, a simple and solvent-free method using headspace solid-phase microextraction (SPME) and gas chromatography–mass spectrometry (GC–MS) was developed for determination of the volatile compounds from fresh flowers ... -
Efecto de la técnica de sangrado sobre la composición fenólica de vinos cv. Malbec = Effect of saignée on phenolic composition of Malbec wines
Fanzone, Martín Leandro; Assof, Mariela Vanesa; Peña Neira, Alvaro; Zamora, Fernando; Jofre, Viviana Patricia (Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias, 2013)El mercado actual exige, en gran parte, la disponibilidad de vinos estructurados con coloraciones intensas, razón por la cual los enólogos evalúan constantemente diversas variantes tecnológicas tendientes a satisfacer los ... -
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 ... -
Effects on chlorophyll and carotenoid contents in different grape varieties (Vitis vinifera L.) after nitrogen and elicitor foliar applications to the vineyard
Gutiérrez Gamboa, Gastón; Marín San Román, S.; Jofre, Viviana Patricia; Rubio Bretón, Pilar; Pérez Alvarez, Eva Pilar; Garde Cerdán, Teresa (Elsevier, 2018-12)Photosynthetic pigments, including carotenoids are important secondary metabolites, which play a key role in photosynthesis. There is little information about the effects of nitrogen and elicitor applications on chlorophyll ... -
Enzymatic activities produced by mixed Saccharomyces and non-Saccharomyces cultures : relationship with wine volatile composition
Maturano, Yolanda Paola; Assof, Mariela Vanesa; Fabani, Maria Paula; Nally, María Cristina; Jofre, Viviana Patricia; Rodriguez Assaf, Leticia Anahi; Toro, Maria Eugenia; Vazquez, Fabio; Castellanos de Figueroa, Lucía Inés (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 ... -
Evaluation of dihydroquercetin-3-O-glucoside from Malbec grapes as copigment of malvidin-3-O-glucoside
Fanzone, Martín Leandro; González-Manzano, Susana; Pérez-Alonso, Joaquín; Escribano-Bailón, María Teresa; Jofre, Viviana Patricia; Assof, Mariela Vanesa; Santos-Buelga, Celestino (2015-05-15)Malbec is a wine grape variety of great phenolic potential characterized for its high levels of anthocyanins and dihydroflavonols. To evaluate the possible implication of dihydroflavonols in the expression of red wine color ... -
Free Volatile Compounds of cv. Pedro Giménez (Vitis vinifera L.) White Grape Must Grown in San Juan, Argentina
Maturano, Yolanda Paola; Nally, María Cristina; Assof, Mariela Vanesa; Toro, Maria Eugenia; Castellanos de Figueroa, Lucía Inés; Jofre, Viviana Patricia; Vazquez, Fabio (2018)The free aromatic composition of must from Pedro Giménez grapes, grown in San Juan, Argentina, was characterised. Samples from the vintages of 2008 and 2009 were analysed by gas chromatography–mass spectrometry–solid phase ... -
Impact of closure type and storage temperature on chemical and sensory composition of Malbec wines (Mendoza, Argentina) during aging in bottle
Giuffrida, María Lourdes; Ubeda, Cristina; Heredia, Francisco José; Catania, Anibal Alejandro; Assof, Mariela Vanesa; Fanzone, Martín Leandro; Jofre, Viviana Patricia (Elsevier, 2019-07)Malbec is the flagship variety of Argentina mainly due to its high oenological value and plasticity to obtain different wine styles. During bottled aging, the chemical and organoleptic composition of wines is subject to ... -
Impact of phenolic and polysaccharidic composition on commercial value of Argentinean Malbec and Cabernet Sauvignon wines
Fanzone, Martín Leandro; Peña Neira, Alvaro; Gil, Mariona; Jofre, Viviana Patricia; Assof, Mariela Vanesa; Zamora, Fernando (Elsevier, 2012-01)Knowledge of the chemical composition of wine and its association with the commercial value constitutes an objective tool to assess quality and can be used as a marketing strategy. Phenolic compounds are very important ... -
Influencia de dos técnicas de maceración sobre la composición polifenólica, aromática y las características organolépticas de vinos cv. Merlot
Casassa, Luis Federico; Sari, Santiago Eduardo; Avagnina, Maria Silvia; Diaz, Mariela; Jofre, Viviana Patricia; Fanzone, Martín Leandro; Catania, Carlos (Infonet, 2007)La técnica de maceración empleada, así como la gestión de la misma, condiciona fuertemente el estilo de vino a obtener. En el marco de un ensayo llevado a cabo en la planta piloto del Centro de Estudios de Enología de ...