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During the aging of red wine in oak wood barrels, or in alternative aging systems, interactions between the compounds released from wood, the compounds of the wine and oxygen can take place. The main objective of the present work was to study oxygen-ellagitannin interactions by monitoring their levels in three model systems all containing the same amounts of French oak chips and only differing in the oxygen content: total absence, only the oxygen released from the chips and air-saturated (model systems F, OW and OS, respectively). This study has highlighted the influence of oxygen in the ellagitannins evolution and the relevance of the oxygen trapped into the oak chips, reporting for the first time the kinetics of oxygen release to the model wine. Furthermore, the indirect contribution of oxygen to the ellagitannin disappearance by boosting auto-oxidative reactions has also been pointed out. Vescalgin seems to be the ellagitannin most affected by the initial oxygen levels.
This article was published in the following journal.
Name: Journal of agricultural and food chemistry
The content of selected elements: Al, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, Sb, Si, Ti, V and Zn was determined in archaeological waterlogged oak wood from the Lednica Lake ...
We review the role of the oak barrel as an active vessel for wine maturation. We present a historical background to highlight that previously established aspects of processes occurring with wine insid...
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The occurrence of more than 1,000 structural diversity in ellagitannins has been hypothesized to begin with oxidation of penta-O-galloyl--D-glucose (-PGG) to couple the galloyl groups. However, ...
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An interdisciplinary scientific approach to the study of complex interactions among biological, social, behavioral, environmental factors, and their effects on health outcomes.
A statistical tool for detecting and modeling gene-gene interactions. It is a non-parametric and model-free approach.
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Simultaneous and continuous monitoring of several parameters during sleep to study normal and abnormal sleep. The study includes monitoring of brain waves, to assess sleep stages, and other physiological variables such as breathing, eye movements, and blood oxygen levels which exhibit a disrupted pattern with sleep disturbances.