IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 A first look at the aromatic profile of “Monferace” wines

A first look at the aromatic profile of “Monferace” wines

Abstract

Grignolino, is a native Piedmont grape variety which well represents the historical and
enological identity of Monferrato, a territory between Asti and Casale Monferrato, included in the World Heritage List designated by UNESCO (1). Numerous documents trace its cultivation back to the early Middle Age. Until the mid-1900s Grignolino was considered a fine wine valued as much as Barolo and Barbaresco for its quality, finesse, and unique characteristics (2). Today the young and “easy” version of this wine is the best known and appreciated for a pale ruby red color with tints that rapidly tend to orange, high acidity, with distinct tannins. However, some local wine producers, the Monferace association, in order to revive the ancient glories of Grignolino, have decided to produce an aged version of this wine. For this purpose, they have drawn up production guidelines that require at least 40 months of ageing, 24 of which in oak barrels.
In order to characterize Monferace, for the first time, from an aromatic point of view, 2012 (four years of ageing) and 2015 (two years of ageing) wines were analyzed. Their aromatic composition was evaluated using SPE-GC-MS methods and sensory analysis (3). The most important volatile compounds identified in these wines belong to the class of lactones, hydroxybenzaldehydes, phenols, short and medium chain fatty acids and their ethyl esters. Moreover, traces of some isoprenoid compounds were detected. Results highlighted a composite and rich aromatic profile, typical of wines characterized by great structure and complexity. From an olfactory point of view Monferace differs significantly from the more
widespread, and not aged, Grignolino wines. The former shows important notes of wood, boisée, floral, cherry, berries, caramel and spice, the latter is characterized by notes of violet, rose, raspberry, pepper, currant, cherry, resinous and vegetable. Statistical analysis showed a good correlation between the main olfactory descriptors identified in the wines and key aroma compounds measured in the same samples.

References

1) UNESCO World Heritage Centre. Vineyard Landscape of Piedmont: Langhe-Roero and Monferrato. Available at https://whc.unesco.org/en/list/1390/
2) Desana, P. Barbesino and Grignolino wines in the grape-wine history of Monferrato. Studying 12th century documents. 1980, Vignevini. 7(12) p. 15-17.
3) Petrozziello, M., Bonello, F., Asproudi, A., Nardi, T., Tsolakis, C., Bosso, A., Martino, V. D., Fugaro, M., & Mazzei, R. A. (2020). Differences in xylovolatiles composition between chips or barrel aged wines: OENO One, 54(3), 513–522. https://doi.org/10.20870/oeno-one.2020.54.3.2923

DOI:

Publication date: June 24, 2022

Issue: IVAS 2022

Type: Poster

Authors

Petrozziello Maurizio1, Asproudi Andriani1, Bonello Frederica1, Cravero Maria Carla1, Gianotti Silvia2 and Ronco Mario2

1CREA, Research Centre for Viticulture and Enology
2Associazione Monferace, Castello di Ponzano Monferrato

Contact the author

Keywords

Grignolino, wood ageing, aromatic compounds, GC-MS, sensory analysis.

Tags

IVAS 2022 | IVES Conference Series

Citation

Related articles…

Mapping and tracking canopy size with VitiCanopy

Understanding vineyard variability to target management strategies, apply inputs efficiently and deliver consistent grape quality to the winery is essential. However, despite inherent vineyard variability, the majority are managed as if they are uniform. VitiCanopy is a simple, grower-friendly tool for precision/digital viticulture that allows users to collect and interpret objective spatial information about vineyard performance. After four years of field and market research, an upgraded VitiCanopy has been created to achieve a more streamlined, technology-assisted vine monitoring tool that provides users with a set of superior new features, which could significantly improve the way users monitor their grapevines. These new features include:
• New user interface
• User authentication
• Batch analysis of multiple images
• Ease the learning curve through enhanced help features
• Reporting via the creation of colour maps that will allow users to assess the spatial differences in canopies within a vineyard.
Use-case examples are presented to demonstrate the quantification and mapping of vineyard variability through objective canopy measurements, ground-truthing of remotely sensed measurements, monitoring of crop conditions, implementation of disease and water management decisions as well as creating a history of each site to forecast quality. This intelligent tool allows users to manage grapevines and make informed management choices to achieve the desired production targets and remain profitable.

Analysis of Cabernet Sauvignon and Aglianico winegrape (V. vinifera L.) responses to different pedo-climatic environments in southern Italy

Water deficit is one of the most important effects of climate change able to affect agricultural sectors. In general, it determines a reduction in biomass production, and for some plants, as in the case of grapevine, it can endorse fruit quality. The monitoring and management of plant water stress in the vineyard

Leaf vine content in nutrients and trace elements in La Mancha (Spain) soils: influence of the rootstock

The use of rootstock of American origin has been the classic method of fighting against Phylloxera for more than 100 years. For this reason, it is interesting to establish if different rootstock modifies nutrient composition as well as trace elements content that could be important for determining the traceability of the vine products. A survey of four classic rootstocks (110-Richter, SO4, FERCAL and 1103-Paulsen) and four new ones (M1, M2, M3 and M4) provided by Agromillora Iberia. S.L.U., all of them grafted with the Tempranillo variety, has been carried out during 2019. The eight rootstocks were planted in pots of 500 cc, on three soils with very different characteristics from Castilla-La Mancha (Spain). In the month of July, the leaves were collected and dried in a forced air oven for seven days at 40ºC. Then, the samples were prepared for the analysis determination, carried out by X-Ray fluorescence spectrometry. The results obtained showed that in the case of content in mineral elements in leaf, separated by soil type, we can report the importance of few elements such as Si, Fe, Pb and, especially, Sr. The rootstock does not influence the composition of the vine leaf for the studied elements that are the most important in determining the geochemical footprint of the soil. The influence of the soil can be discriminated according to some elements such as Fe, Pb, Si and, especially, Sr.

Grapevine varietal diversity as mitigation tool for climate change: Agronomic and oenologic potential of 14 foreign varieties grown in Languedoc region (France)

Climate change effects in Languedoc include an expected rise in temperatures, increased evapotranspiration as well as more severe and frequent climatic hazards, such as frost, drought periods and heat waves. For winegrowers theses phenomena impact both yield and quality, resulting in more frequent unbalanced wines. Research on identified mitigation tools for vineyard management is necessary to improve resilience of grapevine agrosystems. Varietal assortment is one of them. This study focuses on agronomic and oenologic potential of 14 foreign varieties grown in Languedoc French region. Fourteen grapevine varieties were monitored during 2021 from June until harvest on eight different sites, some of which occurring on more than one site adding up to 21 different modalities: 7 white varieties Alvarinho B, Assyrtiko B (2), Malvasia Istriana B, Parellada B, Verdejo B, Verdelho B, Xarello B, and 7 black varieties Saperavi N (2), Touriga nacional N, Baga N, Aleatico N, Montepulciano N (2), Primitivo N (3), Calabrese N (3). Varietals were compared through the following parameters: phenology was assessed by using the information collected in the Database Network of French Vine Conservatories (INRAE-SupAgro-IFV, 2005-2015). The number of inflorescences for shoots from secondary buds and bourillons and suckers were observed to assess post-bud break frost tolerance potential. Grapevine water status was studied through stem water potential measurement, observation of foliage symptoms of drought, and 𝛿13C on must. Frequencies and intensities of downy mildew, powdery mildew, and black rot attacks were estimated before harvest on leaves and clusters and botrytis at harvest to assess disease susceptibilities. Berry composition was monitored from end of veraison until harvest. Yield and mean bunch weight were also calculated. Varieties were then ranked on a 1-4 scale for each parameter and compared through PCA. Forty two stations of the Mediterranean basin were compared by PCA with the Multicriteria Climatic Classification indicators in order to confront the collected information during 2021 campaign to the hypothesis that plants coming from dry and hot regions are genetically adapted to such climatic conditions.

Vineyards and clay minerals: multi-technique analytical approach and correlations with soil properties

Purpose of this research is to quantitatively assess the mineral component of vineyard soils, with particular attention to the mineralogical analysis of clays, which represent an element of high importance in the vineyard culture as well as in general agriculture. An X-ray diffraction (XRD) / thermogravimetric (TG) multi-technique analytical approach was developed, tested on soil samples taken from vineyards around the world. This codified analytical procedure was necessary to obtain precise qualitative and quantitative mineralogical data, globally comparable to distinguish the geopedological identity of the vineyards. Soil samples from vineyards of various locations were analysed, in very different geological conditions. The bulk-rock quantitative phase analysis (QPA) was obtained by the Rietveld method while the detailed composition of the clay-sized fraction was determined by modelling of the oriented X-ray diffraction patterns. The research provided a precise classification of the mineral component of soils, distinguishing the mineral phases of the clays and the so-called mixed-layer clay minerals. We found that the content in mixed layers can be directly correlated with the water retention and the cation exchange capacity ​​of the soil, while the presence of other clayey minerals and phyllosilicates in this research did not affect this CEC parameter, which codes the fertility level of the soils. The study demonstrates that terroir, in particular soils formed in complex or very different geological conditions, can only be effectively interpreted by properly analysing its mineral phases, in particular the mixed-layer clay component. These are characteristic abiotic ecological indicators, which may have specific eco-physiological influences on the plant.