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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
Termites and fungi are the primary decomposers of dead wood. Interactions between wood-feeding termites and wood-rot fungi are inevitable given their shared food source. Termites have developed multip...
In this study, the chemical modification of bulk beech wood is described along with its utilization as biosorbent for the remediation of copper from water. The material was prepared by esterification ...
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The purpose is to evaluate feasibility of medical supervision of professionally active asymptomatic wood workers with questionnaires and nasofibroscopy. Secondary purposes are: -...
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.
Screening techniques first developed in yeast to identify genes encoding interacting proteins. Variations are used to evaluate interplay between proteins and other molecules. Two-hybrid techniques refer to analysis for protein-protein interactions, one-hybrid for DNA-protein interactions, three-hybrid interactions for RNA-protein interactions or ligand-based interactions. Reverse n-hybrid techniques refer to analysis for mutations or other small molecules that dissociate known interactions.