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…

Unveiling the viticultural heritage of Rachaya, Lebanon: genetic, ampelographic and chemical profiling of local grape varieties

Located in the western bekaa region of lebanon, rachaya is known for its extensive history of viticulture and ideal mediterranean conditions for grapevine cultivation. Despite the area’s importance in grapevine production, there is limited knowledge about the local grape varieties grown there. In this work, we conducted a detailed analysis of five local grapevine varieties in the area, obeidy, kassoufi, foddeh, aswadi, and maryami, of which little is currently known, in comparison to a set of international varieties.

Plastic cover film on table grapes from field to cold storage

Plastic film covering is a technique largely used in viticulture to protect table grapes vines from adverse weather conditions and to reduce the negative effects of grapevine fungi disease. Plastic film composition affects solar radiation income inside the covering with effects on sunlight wavelengths in relation to different absorbance and reflectance. The interaction of selected light ranges with vines could influence grape ripening and yield and consequently influence shelf life.

Health benefits of winemaking by-products: in vitro study of the phenolic profile and potential healthy properties

The wine sector plays a significant role in the international agri-food industry, with the winemaking process leading to the generation of considerable amounts of by-products. Among these by-products, grape pomace, is one of the most abundant resources, mainly finding application in the production of distillates, fertilizers, and animal feed.

Synergistic effect of fumaric acid and chitosan on the inhibition of malolactic fermentation

During wine storage and aging, microorganisms capable of degrading malic acid in an undesirable manner can proliferate.

Acumulación de materia seca, orientada a valorar la fijación de carbono, en función del aporte de riego y la pluviometría, en Cabernet-Sauvignon a lo largo de 15 años

The vineyard is capable of fixing carbon in its permanent structure from atmospheric carbon dioxide, through the process of gas exchange and the performance of photosynthesis. The photosynthetic capacity of the vineyard depends on the water resources that the plant may have at its disposal, so the amount of dry matter, derived from the processed photosynthates, that it can store will depend on the water regime of the crop, both in the annually renewable organs as in permanent parts.