martes, 18 de diciembre de 2018

Oxygen Consumption by Red Wines under Different Micro-Oxygenation Strategies and Q. Pyrenaica Chips. Effects on Color and Phenolic Characteristics

Rosario Sánchez-Gómez, Ignacio Nevares, Ana María Martínez-Gil and Maria del Alamo-Sanza
Grupo UVaMOX, E.T.S. Ingenierías Agrarias, Universidad de Valladolid, Avda. Madrid 50, 34004 Palencia, Spain 
(This article belongs to the Special Issue Wine Aging Technologies)
Full-Text   |   PDF [3979 KB, uploaded 6 September 2018]   |    








Abstract

The use of alternative oak products (AOP) for wine aging is a common practice in which micro-oxygenation (MOX) is a key factor to obtain a final wine that is more stable over time and with similar characteristics as barrel-aged wines. Therefore, the oxygen dosage added must be that which the wine is able to consume to develop correctly. Oxygen consumption by red wine determines its properties, so it is essential that micro-oxygenation be managed properly. This paper shows the results from the study of the influence on red wine of two different MOX strategies: floating oxygen dosage (with dissolved oxygen setpoint of 50 µg/L) and fixed oxygen dosage (3 mL/L·month). The results indicated that the wines consumed all the oxygen provided: those from fixed MOX received between 3 and 3.5 times more oxygen than the floating MOX strategy, the oxygen contribution from the air entrapped in the wood being more significant in the latter. Wines aged with wood and MOX showed the same color and phenolic evolution as those aged in barrels, demonstrating the importance of MOX management. Despite the differences in the oxygen consumed, it was not possible to differentiate wines from the different MOX strategies at the end of the aging period in contact with wood. View Full-Text

lunes, 17 de diciembre de 2018

Different Woods in Cooperage for Oenology: A Review

Beverages 2018, 4(4), 94; https://doi.org/10.3390/beverages4040094 
1Department of Analytical Chemistry,
2Department of Agroforestry Engineering, UVaMOX-Higher Tech. Col. of Agricultural Engineering, Universidad de Valladolid, 34001 Palencia, Spain

(This article belongs to the Special Issue Wine Aging Technologies)
Full-Text   |   PDF [2737 KB, uploaded 3 December 2018]   |







Abstract

Contact of wine with wood during fermentation and ageing produces significant changes in its chemical composition and organoleptic properties, modifying its final quality. Wines acquire complex aromas from the wood, improve their colour stability, flavour, and clarification, and extend their storage period. New trends in the use of barrels, replaced after a few years of use, have led to an increased demand for oak wood in cooperage. In addition, the fact that the wine market is becoming increasingly saturated and more competitive means that oenologists are increasingly interested in tasting different types of wood to obtain wines that differ from those already on the market. This growing demand and the search for new opportunities to give wines a special personality has led to the use of woods within the Quercus genus that are different from those used traditionally (Quercus alba, Quercus petraea, and Quercus robur) and even woods of different genera. Thus, species of the genus Quercus, such as Quercus pyrenaica Willd., Quercus faginea Lam., Quercus humboldtti Bonpl., Quercus oocarpa Liebm., Quercus frainetto Ten, and other genera, such as Robinia pseudoacacia L. (false acacia), Castanea sativa Mill. (chestnut), Prunus avium L. and Prunus cereaus L. (cherry), Fraxinus excelsior L. (European ash), Fraxinus americana L. (American ash), Morus nigra L, and Morus alba L. have been the subject of several studies as possible sources of wood apt for cooperage. The chemical characterization of these woods is essential in order to be able to adapt the cooperage treatment and, thus, obtain wood with oenological qualities suitable for the treatment of wines. This review aims to summarize the different species that have been studied as possible new sources of wood for oenology, defining the extractable composition of each one and their use in wine. View Full-Text
Keywords: traditional oaks; different oaks; other woods; ellagitannins; low molecular phenols; volatile compounds

sábado, 15 de diciembre de 2018

UVaMOX gana el Concurso Desafío Universidad-Empresa 2018


El objetivo es promover la realización de proyectos de I+D+I y/o consultoría en colaboración con los organismos generadores de conocimiento de Castilla y León (fundamentalmente universidades) y el tejido empresarial, en base a las prioridades temáticas para la región identificadas en la reciente actualización de la RIS3: Agroalimentación; Tecnologías de fabricación (Automoción y Aeronáutica); Salud y Calidad de Vida; Patrimonio, Lengua Española y Recursos endógenos, y Tecnologías de la Información y Comunicación, Energía y Sostenibilidad.

Las entidades (empresas, nuevos emprendedores o asociaciones) inscriben sus necesidades tecnológicas. Posteriormente los investigadores de las universidades de Castilla y León y del CSIC en la región podrán plantear soluciones (proyecto de investigación y/o consultoría).

jueves, 1 de noviembre de 2018

International Congress on Grapevine and Wine Sciences

http://www.icvv.es/english/international-congress-grapevine-and-wine-sciences
In November 2018 and coinciding with the tenth anniversary of its creation, the Institute of Grapevine and Wine Sciences (ICVV) organizes an international congress in the heart of the Rioja DOC, that aims to serve as a platform for interrelating the most relevant researchers of the international sphere in Grapevine and Wine Sciences. The congress will dedicate sessions to vine protection, genetic diversity and breeding, production management, vine physiology, oenological microbiology, sensorial evaluation and oenological chemistry and technology.
In order to provide a multidisciplinary experience to the participants, the program will cover the main and most current research topics in this field, and all activities will be plenary. Registered people will have the opportunity to present the results of their recent research, in either oral or poster communication.
This scientific event is also open to professionals of the sector who want to catch up with the latest advances in grapevine and wine research. Simultaneous translation from English (official language of the congress) into Spanish will be available.
Furthermore, the social program and technical visits will allow our visitors to enjoy the gastronomy, the landscape and the culture of this region with winemaking vocation and tradition.
E-mail: icvv_icgws@icvv.es

martes, 5 de junio de 2018

XIV edición del Congreso Nacional de Investigación Enológica

















































































































































































Ciudad Real, del 26 a 29 de junio de 2018


Congreso para aunar igualmente tradición e innovación manteniendo vivo el espíritu que originó Gienol, que no es otro que el de compartir la ciencia, la amistad y la pasión de todos los investigadores en Enología, y de despertar este interés en las nuevas generaciones de jóvenes investigadores.

28 de junio de 2018
Hacia el control total de la microoxigenación de vinos en barricas y otros envases
Dra. María del Alamo Sanza, Grupo UVaMOX – Universidad de Valladolid

Hora: 12.30- 13.00h
Lugar: Facultad de Ciencias y Tecnologías Químicas de Ciudad Real (Universidad de Castilla La Mancha). Ciudad Real.

sábado, 19 de mayo de 2018

Enoforum 2018

 

El congreso ENOFORUM tiene como finalidad reunir investigadores, técnicos y proveedores, los tres pilares de la innovación tecnológica. Se presentará a los enólogos y agrónomos españoles lo mejor de la producción técnico-científica nacional e internacional desarrollada en los últimos años.


 31 de mayo de 2018
Dr. Ignacio Nevares Domínguez y Dra. María del Alamo, Grupo UVaMOX – Universidad de Valladolid

1 de junio de 2018
Reactivación de la tasa de trasferencia de oxígeno de la madera de roble de barricas usadas mediante regeneración
Dra. María del Alamo Sanza y Dr. Ignacio Nevares Domínguez, Grupo UVaMOX – Universidad de Valladolid

La inscripción puede realizarse en la web de ENOFORUM y en este link está el programa actualizado

sábado, 5 de mayo de 2018

Interesantísimo encuentro bilateral ICVV-ISVV 2018


Encuentro bilateral con el ISVV de Bordeaux en la Finca La Grajera del gobierno de La Rioja, en la que está la sede del ICVV, sobre investigación en Viticultura y Enología. En este encuentro, UVaMOX, como unidad asociada al CSIC-ICVV, presentamos nuestro grupo de investigación. Esperemos que este encuentro de sus frutos en nuevas colaboraciones ICVV-ISVV.

jueves, 1 de febrero de 2018

SEMINARIOS ICVV 2018: La barrica de roble como micro-oxigenador natural. Estado actual del conocimiento


http://www.icvv.es/seminarios


Conferencia: La barrica de roble como micro-oxigenador natural. Estado actual del conocimiento
Dra. María del Álamo Sanza. Grupo UVaMOX-Universidad de Valladolid

DIA: 16 de Febrero 2018
HORA: 12:30 horas
LUGAR: Sala de Seminarios de la tercera planta del Edificio Administrativo (Finca La Grajera)