terclim by ICS banner
IVES 9 IVES Conference Series 9 OIV 9 OIV 2024 9 Short communications - Oenology, methods of analysis 9 Impact of yeast strains on wine profiles of nine PIWIs: focus on volatile thiols

Impact of yeast strains on wine profiles of nine PIWIs: focus on volatile thiols

Abstract

Disease resistant grapevine varieties (PIWI) are increasingly important for sustainable wine production, yet the impact of different yeasts on their wine profiles remains poorly studied. In this study, nine white interspecies varieties (i.e., caladris blanc, fleurtai, hibernal, johanniter, muscaris, sauvignon kretos, soreli, souvignier gris, and voltis) grown at the faculty of agriculture, university of zagreb (croatia) were vinified with three different saccharomyces cerevisiae yeasts (control strain, zymaflore x5, and zymaflore xarom). The obtained wines differed in a range of chemical and sensory parameters depending on the variety and yeast strain. Volatile thiols were particularly affected group of compounds, with major variations in 4-mmp, 3-mh, and 3-mha levels. The sum of these three thiols ranged from 88 ng/l to 1548 ng/l in muscaris and hibernal, respectively. Hibernal wine fermented with the x5 strain contained remarkable 1952 ng/l of thiols (> 490 odour active values), including 311 ng/l of 4-mmp. Unlike 4-mmp and 3-mha, 3-mh was detected in all tested samples. The x5 strain resulted in the highest levels of 4-mmp (median 18 ng/l) and 3-mh (median 380 ng/l), while xarom favored increased 3-mha production (median 74 ng/l). Sensory analysis confirmed differences in thiol-related descriptors, highlighting yeast’s influence on the wine style of emerging grape varieties.

Impatto dei ceppi di lievito sui profili enologici di nove piwi: focus sui tioli volatili

Le varietà resistenti alle malattie (piwi) sono sempre più importanti per la produzione vitivinicola sostenibile, ma l’impatto dei diversi lieviti sui loro profili vinicoli rimane poco studiato. In questo studio, nove varietà interspecifiche di uva bianca (caladris blanc, fleurtai, hibernal, johanniter, muscaris, sauvignon kretos, soreli, souvignier gris e voltis), coltivate presso la facoltà di agraria dell’università di zagabria (croazia), sono state vinificate con tre diverse ceppi di lievito saccharomyces cerevisiae (ceppo controllo, zymaflore x5 e zymaflore xarom). I vini ottenuti presentavano differenze in una serie di parametri chimici e sensoriali in base alla varietà e al ceppo di lievito. I tioli volatili, in particolare, sono stati fortemente influenzati, con variazioni significative nei livelli di 4-mmp, 3-mh e 3-mha. La somma di questi tre tioli variava da 88 ng/l a 1548 ng/l nei vini muscaris e hibernal, rispettivamente. Il vino hibernal fermentato con il ceppo x5 conteneva notevolmente 1952 ng/l di tioli (> 490 valore attivo olfattivo), di cui 311 ng/l di 4-mmp. A differenza del 4-mmp e del 3-mha, il 3-mh è stato rilevato in tutti gli esemplari testati. Il ceppo x5 ha prodotto i livelli più alti di 4-mmp (mediana di 18 ng/l) e di 3-mh (mediana di 380 ng/l), mentre il xarom favoriva una produzione aumentata di 3-mha (mediana di 74 ng/l). L’analisi sensoriale ha confermato le differenze nei descrittori legati ai tioli, evidenziando l’influenza del lievito sullo stile dei vini prodotti da queste varietà emergenti di uva.

Impact des souches de levure sur les profils œnologiques de neuf piwis : focus sur les thiols volatils

Les cépages résistants aux maladies (piwi) sont de plus en plus importants pour la production viticole durable, mais l’impact des différentes levures sur leurs profils œnologiques reste peu étudié. Dans cette étude, neuf cépages interspécifiques blancs (caladris blanc, fleurtai, hibernal, johanniter, muscaris, sauvignon kretos, soreli, souvignier gris et voltis), cultivées à la faculté d’agriculture de l’université de zagreb (croatie), ont été vinifiées avec trois souches différentes de saccharomyces cerevisiae (souche témoin, zymaflore x5 et zymaflore xarom). Les vins obtenus présentaient des différences dans plusieurs paramètres chimiques et sensoriels en fonction de la variété et de la souche de levure. Les thiols volatils, en particulier, ont été fortement affectés, avec des variations significatives dans les niveaux de 4-mmp, 3-mh et 3-mha. La somme de ces trois thiols variait de 88 ng/l à 1548 ng/l dans les vins issus de muscaris et hibernal, respectivement. Le vin hibernal fermenté avec la souche x5 contenait 1952 ng/l de thiols (> 490 valeur actif olfactif), dont 311 ng/l de 4-mmp. Contrairement au 4-mmp et au 3-mha, le 3-mh a été détecté dans tous les échantillons analysés. La souche x5 a entraîné les niveaux les plus élevés de 4-mmp (médiane : 18 ng/l) et de 3-mh (médiane : 380 ng/l), tandis que xarom favorisait une production accrue de 3-mha (médiane : 74 ng/l). L’analyse sensorielle a confirmé les différences dans les descripteurs liés aux thiols volatils, soulignant l’influence de la levure sur le style des vins issus de ces cépages émergentes.

Publication date: November 18, 2024

Issue: OIV 2024

Type: Article

Authors

Ana Hranilovic¹, Valentina Tusic², Ana Marija Jagatic Korenika², Ana Jeromel², Jasminka Karoglan Kontic², Darko Preiner²

¹ Laffort, France
² Department of Viticulture and Oenology, Faculty of Agriculture, University of Zagreb, Croatia

Contact the author*

Tags

IVES Conference Series | OIV | OIV 2024

Citation

Related articles…

La producción vitivinícola como fuente de impactos positivos en el medio seminatural

Wine is at risk of being labelled as a dangerous health product, based on studies that focus on its alcohol content. However, multiple studies suggest that moderate consumption is healthy. Changing the focus from health impacts to the environmental and socioeconomic impacts that wine companies cause, what can be said?

Correlation between stable isotopic composition of the fungus aspergillus niger and its growth substrate and the extracted chitin

Wine is one of the most consumed and appreciated beverages in the world. Due to the growing attention paid to consumer health, there is a continuous search for sustainable alternatives to common additives (such as sulfur dioxide) used to preserve wine. An example is represented by chitosan, the main derivative of chitin, approved for the treatment of must and wine since 2009 by the “international organization of vine and wine” (OIV/OENO 338a/2009) and by the european commission (EC Reg. No. 606/2009).

Evaluation of Acıkara (Vitis vinifera L.) native grape variety of anatolia for red wine production potential

The acıkara grape variety, a nearly forgotten native black variety in Anatolia/Turkey, has recently gained interest in its potential for producing high-quality wine from producers and consumers. The potential of producing high-quality red wine from the Acıkara grape variety (vitis vinifera), which is cultivated on the elmalı/antalya in the highland (1100 m altitude) of western mediterranean region, was investigated, and the suitability of the wine’s characteristics associated with high-quality red wine was determined.

Use of cyclodextrins to improve grape must fermentability thanks to their sequestering effect on medium-chain fatty acids

Cyclodextrins are complex cyclic oligosaccharides of glucose units. They are produced from the breakdown of starch by the enzymatic reaction of glucosyltransferase. The result is a ring-shaped molecule with a cavity with a hydrophilic outer part and a hydrophobic inner part. As a consequence of this cavity, cyclodextrin is able to form complexes with non-polar organic molecules [1,2].

A look back at 20 years of exploring the future of the vines and wines sector

What if, in 25 years, most wines were dealcoholized and flavored ? What if vines were only cultivated to combat erosion, store carbon, and provide anthocyanins…? What if climate change completely changed the list of vine varieties cultivable for wine production in France? What if food stores had completely disappeared in favor of virtual platforms? And if… because the long-term future is not predetermined and therefore not knowable, because the future is open to several possibilities, because the future does not emerge from nothing but from the present which conceals heavy trends and weak signals, prospective approaches make it possible to consider the room for maneuver that actors have to promote the advent of a future, which we can hope to be chosen, at least in part.