GiESCO 2019 banner
IVES 9 IVES Conference Series 9 GiESCO 9 Aromatic profile of six different clones of Chardonnay grape berries in Minas Gerais (Brazil)

Aromatic profile of six different clones of Chardonnay grape berries in Minas Gerais (Brazil)

Abstract

Context and purpose of the study – Aromas are one of the key points in food analysis since they are related to character, quality and consequently consumer acceptance. It is not different in the winery industry, where the aromatic profile is a combination of viticultural and oenological practices. Based on the development of more aromatic clones and on the potential to produce sparkling wines at Caldas, in the southern region of Minas Gerais (Brazil) (21°55´S and 46°23´W, altitude 1,100m), the aim of this work was the determination of volatile compounds in six different clones of Chardonnay grape berries to better understand which compounds add bouquet to the wine, and additionally comprehend the impacts of the edaphoclimatic and annual conditions on the improvement of grape-growing and winemaking practices.
Material and methods – The study was conducted in a 6-year-old experimental vineyard located at Caldas city in two consecutive vintages with six different clones (76, 95, 96, 121, 131 and 809 – ENTAV-INRA, France) of the cultivar Chardonnay (Vitis vinifera L.) grafted onto 1103 Paulsen rootstock and trained on a vertical shoot positioned trellis.Grapes were harvested in the maturity stage for sparkling wine production. The volatile compounds were analyzed in the grape berries by HS-SPME/GC-MS.
Results – Considering the clone vineyards, a total of 84 compounds were identified in both vintages, 2017 and 2018. The statistical analysis showed discrimination between harvests (almost 50%) and discrete discrimination (20.2%) among clones in the PCA analysis. Four well established clusters were identified: clone 809 in 2017 and 2018 harvests; the other five clones from 2018; and a fourth region in which the other five clones from 2017 were slightly dispersed. The difference between vintages was mainly due to acids, sulfur-volatiles and furanoid substances. It was confirmed that clone 809 distinguishes from the others clones since it is highly aromatic (monoterpenoid compounds – e.g. linalool, geraniol, nerol), which adds more flowery and fruity notes to the berries, a Muscat character. Among the differences related to the other clones in 2017, the class of compounds that discriminate clones 95 and 96 were aldehyde and monoterpenoid; and ketone and ester compounds, respectively. Although the vintage demonstrated significant influence on the volatile profile of the clones studied (e.g. precipitation levels during the maturation phase), the data indicates that the genotype is a relevant contributor for the differentiation of volatile compounds in Chardonnay clones.

DOI:

Publication date: March 12, 2024

Issue: GiESCO 2019

Type: Poster

Authors

Naíssa PRÉVIDEBERNARDO1,2*, Aline DE OLIVEIRA1,2, Renata Vieira DA MOTA3, Francisco Mickael de Medeiros CÂMARA3, Murillo de Albuquerque REGINA3, Eduardo PURGATTO1,2

1 Food Science and Experimental Nutrition Department, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, bl 14, São Paulo, SP, Brazil
2 Food Research Center, University of São Paulo, São Paulo, Brazil
3 Agricultural Research Company of Minas Gerais, Experimental Farm of Caldas, Grape and Wine Technological Center, Av. Santa Cruz, 500, Caldas, MG, Brazil

Contact the author

Keywords

Vitis vinifera, food analysis, grape, aromatic profile, PCA analysis, HS-SPME, GC-MS, flavour, Chardonnay clones

Tags

GiESCO | GiESCO 2019 | IVES Conference Series

Citation

Related articles…

Modeling island and coastal vineyards potential in the context of climate change

Climate change impacts regional and local climates, which in turn affects the world’s wine regions. In the short term, these modifications rises issues about maintaining quality and style of wine, and in a longer term about the suitability of grape varieties and the sustainability of traditional wine regions. Thus, adaptation to climate change represents a major challenge for viticulture. In this context, island and coastal vineyards could become coveted areas due to their specific climatic conditions. In regions subject to warming, the proximity of the sea can moderate extremes temperatures, which could be an advantage for wine. However, coastal and island areas are particular prized spaces and subject to multiple pressures that make the establishment or extension of viticulture complex.
In this perspective, it seems relevant to assess the potentialities of coastal and island areas for viticulture. This contribution will present a spatial optimization model that tends to characterize most suitable agroclimatic patterns in historical or emerging vineyards according to different scenarios. Thanks to an in-depth bibliography a global inventory of coastal and insular vineyards on a worldwide scale has been realized. Relevant criteria have been identified to describe the specificities of these vineyards. They are used as input data in the optimization process, which will optimize some objectives and spatial aspects. According to a predefined scenario, the objectives are set in three main categories associated with climatic characteristics, vineyards characteristics and management strategies. At the end of this optimization process, a series of maps presents the different spatial configurations that maximize the scenario objectives.

Mesoclimate impact on Tannat in the Atlantic terroir of Uruguay

The study of climate is relevant as an element conditioning the typicity of a product, its quality and sustainability over the years. The grapevine development and growth and the final grape and wine composition are closely related to temperature, while climate components vary at mesoscale according to topography and/or proximity to large bodies of water. The objective of this work is to assess the mesoclimate of the Atlantic region of Uruguay and to determine the effect of topography and the ocean on temperature and consequently on Tannat grapevine behavior.

Pruned vine biomass exclusion from a clay loam vineyard soil – examining the impact on physical/chemical properties

The wine industry worldwide faces increasing challenges to achieve sustainable levels of carbon emission mitigation. This project seeks to establish the feasibility of harvesting winter pruned vineyard biomass (PVB) for potential use in carbon footprint reduction, through its use as a renewable biofuel for energy production. In order to make this recommendation, technical issues such as the potential environmental impact, chemical composition and fuel suitability, and logistical challenges of harvesting biomass needs to be understood to compare with the results from similar studies. Of particular interest is the role PVB plays as a carbon source in vineyard soils and what effect annual removal might have on soil carbon sequestration. A preliminary trial was established in the Waite Campus vineyard (University of Adelaide) to test current management strategies. Vines are grown in a Eutrophic, Red Dermosol clay loam soil with well managed midrow swards. A comparison was undertaken of mid-row treatments in two 0.25 Ha blocks (Shiraz and Semillon), including annual cultivation for seed bed preparation, the deliberate exclusion of PVB (25 years) and incorporation of PVB (13 years) at an average of 3.4 and 5.5 Mg/Ha-1 for Shiraz and Semillon respectively. In both 0-10cm and 10-30cm soil core sample depths, combined soil carbon % measures in the desired range of 1.80 to 3.50, were not significantly different between treatments or cultivars and yielded an estimated 42 Mg/ha-1 of sequestered soil carbon. Other key physical and chemical measures were likewise not significantly different between treatments. Preliminary results suggest that in a temperate zone vineyard, managed such as the one used in this study, there is no long term negative impact on soil carbon sequestration through removing PVB. This implies that growers could confidently harvest PVB for use in several end fates including as a bio fuel.

Climate ethnography and wine environmental futures

Globalisation and climate change have radically transformed world wine production upsetting the established order of wine ecologies. Ecological risks and the future of traditional agricultural systems are widely debated in anthropology, but very little is understood of the particular challenges posed by climate change to viticulture which is seen by many as the canary in the coalmine of global agriculture. Moreover, wine as a globalised embedded commodity provides a particularly telling example for the study of climate change having already attracted early scientific attention. Studies of climate change in viticulture have focused primarily on the production of systematic models of adaptation and vulnerability, while the human and cultural factors, which are key to adaptation and sustainable futures, are largely missing. Climate experts have been unanimous in recognising the urgent need for a better understanding of the complex dynamics that shape how climate change is experienced and responded to by human systems. Yet this call has not yet been addressed. Climate ethnography, coined by the anthropologist Susan Crate (2011), aims to bridge this growing disjuncture between climate science and everyday life through the exploration of the social meaning of climate change. It seeks to investigate the confrontation of its social salience in different locations and under different environmental guises (Goodman 2018: 340). By understanding how wine producers make sense of the world (and the environment) and act in it, it proposes to focus on the co-production of interdisciplinary knowledge by identifying and foreshadowing problems (Goodman 2018: 342; Goodman & Marshall 2018). It seeks to offer an original, transformative and contrasted perspective to climate change scenarios by investigating human agency -individual or collective- in all its social, political and cultural diversity. An anthropological approach founded on detailed ethnographies of wine production is ideally placed to address economic, social and cultural disruptions caused by the emergence of these new environmental challenges. Indeed, the community of experts in environmental change have recently called for research that will encompass the human dimension and for more broad-based, integrated through interdisciplinarity, useful knowledge (Castree & al 2014). My paper seeks to engage with climate ethnography and discuss what it brings to the study of wine environmental futures while exploring the limitations of the anthropological environmental approach.

Impact of climate change on the viticultural climate of the Protected Designation of Origin “Jumilla” (SE Spain)

Protected Designation of Origin “Jumilla” (PDO Jumilla) is located in the Spanish provinces of Albacete and Murcia, in the South-eastern part of the Iberian Peninsula, where most of the models predict a severe impact of climate change in next decades. PDO Jumilla covers an area of 247,054 hectares, of which more than 22,000 hectares