Macrowine 2021
IVES 9 IVES Conference Series 9 Natural magnetic levitation for the storage of wine bottles

Natural magnetic levitation for the storage of wine bottles

Abstract

AIM: Wine storage ensuring the quality and correct aging is one of the issues that wineries, wine traders and consumers encounter after wine bottling. The environmental conditions in which the bottle are stored such as temperature, humidity and vibrations may dramatically influence the process. The aim of this project is to study a new cutting-edge technology that uses natural magnetic levitation to dampen the effects of vibrations affecting fine wine bottles.

METHODS: Free standing wine racks equipped with natural magnetic levitation devices (Relaxa, Wineleven, Italy) were compared with conventional racks for a 12-month storage of a fine red wine in bottles (see scheme). A: Relaxa (upper shelf) D: Relaxa (upper shelf) C (control) bottom shelf in contact with the floor and with A B: bottom shelf in contact with the floor (and with D) equipped with a speaker diffusing sonic vibrations floor floor 5 sampling times (2 bottles for each treatment) are planned: time 0 (start of storage); time 1 (after 30 d), time 3 m; time 6 months; time 12 months. All the samples are being analyzed for volatile compounds (GCxGC ToF/MS), phenolic profile (HPLC DAD/FLD and offline LC QqQ-MS), sensory analysis (15-person panel trained for the QDA ® method) and multivariate statistic post-processing.

RESULTS: The panel could be considered reliable for the evaluation of 22 out of 25 sensory descriptors. The statistical elaboration on sensory data showed a good discrimination among different treatments. Instead, the polyphenols and aroma compounds analysis showed mostly the effects of storage time.

CONCLUSIONS

So far (time 6), the sensory analysis showed that the descriptors overall quality judgment, as well as clarity, gustatory cleanness, dry fruit, and olfactory cleanness are linked with treatment A. The chemical profiling instead mostly described the evolution of the wines during the storage.

DOI:

Publication date: September 13, 2021

Issue: Macrowine 2021

Type: Article

Authors

Emanuele Boselli

Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, 39100 Bolzano, Italy; Oenolab, NOITechpark, via Alessandro Volta 13, 39100 Bolzano BZ, Italy,Edoardo Longo, Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, 39100 Bolzano, Italy; Oenolab, NOITechpark, via Alessandro Volta 13, 39100 Bolzano BZ, Italy Giulia Windisch, Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, 39100 Bolzano, Italy; Oenolab, NOITechpark, via Alessandro Volta 13, 39100 Bolzano BZ, Italy Emanuele Boselli, Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, 39100 Bolzano, Italy; Oenolab, NOITechpark, via Alessandro Volta 13, 39100 Bolzano BZ, Italy

Contact the author

Keywords

wine storage, vibrations, sensory analysis, chemometrics, natural magnetic levitation

Citation

Related articles…

How to improve the mouthfeel of wines obtained by excessive tannin extraction

Red wines felt as astringent and bitter generally show high content of tannins due to grape phenolic compounds’ extraction in the maceration process. Among different enological practices, mannoproteins have been shown to improve the mouthfeel of red wines (1) and the color (2,3). In this work, we evaluated the effect of mannoproteins on the mouthfeel profile of Sangiovese wines obtained by excessive tannin extraction.

Antioxidant activity of grape seed and skin extract during ripening

Reactive oxygen species (ROS) play an important physiological role in the body’s defense and being involved in numerous signaling pathways 1, 2. When the balance between oxidant and antioxidant species is altered in favor of ROS, oxidative stress is generated. In this condition the cells are damaged as the ROS oxidize important cellular components, such as proteins, lipids, nucleic acids and

Screening of aroma metabolites within a set of 90 Saccharomyces strains

Currently, the main demand in the global wine market relies on products with unique flavour profiles, character, and typicity, and the metabolism of yeasts greatly influences the organoleptic properties of wines. Therefore, the natural diversity of Saccharomyces strains rises in interest over the last decade, but a large part of this phenotypic diversity remains unexplored

Effect of different pH values on the interaction between yeast mannoproteins and grape seed flavanols

The consequences of the global climate change in the vitiviniculture are revealed as a gap between phenolic and technological grape maturities, higher grape sugar concentration that leads to high wine alcohols levels, lower acidities and high pH values, among others. The unbalanced phenolic maturity caused in this scenario leads to harsh astringency and to instable colour of wines. Previous studies have reported that the addition of yeast mannoproteins (MPs) to wines may have positive effects on these two organoleptic properties due to their capability to interact with wine polyphenols [1]; however, studies about the effect of the pH on these interactions have not been carried out so far.

Terroir traceability in grapes, musts and wine: results of research on Gewürztraminer and Sauvignon Blanc grape varieties in northern Italy

In the study of terroir, a separate analysis of its many component factors can be of great help in accurately identifying a vineyard’s natural elements that impact wine quality and typicity. This research used a dedicated pluri-disciplinary approach to investigate the ecological characteristics, including geology and geographical features, of 14 vineyards that produce Gewürztraminer and Sauvignon Blanc cultivars in the alpine Alto Adige DOC wine region. Both the geopedological method using Vineyards Geological Identity (VGI) and the new Solar Radiaton Identity (SRI) topoclimatic classification method were used to provide analytical measurements and qualitative/quantitative characterisations. In addition, wide-ranging targeted and untargeted oenological and chemical analyses were carried out on grapes, musts and wines to correlate the soils’ geomineral and physical conditions with the biochemical properties of their fruits and wines. The research identified strong correlations between vineyard geo-identity and wine biofingerprint, confirming a mineral traceability of strontium rubidium ratio and some minerals distinctive to the local geology, such as K, Ca, Ag, Ba and Mn.  The study also discovered that particular geomineral and physical soil conditions of the studied vineyards are related to the different amount of amino acids, primary varietal aromas and polyphenols found in grapes, musts and wines. The research confirmed that winemaking technologies support oenological quality, although in some cases, human practices can overpower certain characteristic elements in wine, erasing the typical imprint left by the vineyards’ natural terroir, which becomes less traceable. Terroir abiotic ecological factors and vineyard identity can be classified in detail using the new VGI and SRI analysis methods to discover interrelationships between geo-pedological and topoclimatic conditions that impact wine quality. These methods are also helpful in identifying which ecological elements are exclusive to a particular vineyard or wine sub-region.