Terroir 2004 banner
IVES 9 IVES Conference Series 9 Characterization of “territoires” throughout the production of wines obtained with withered grapes: the cases of “Terra della Valpolicella” (Verona) and “Terra della Valle del Piave” (Treviso) in Northern Italy

Characterization of “territoires” throughout the production of wines obtained with withered grapes: the cases of “Terra della Valpolicella” (Verona) and “Terra della Valle del Piave” (Treviso) in Northern Italy

Abstract

[English version below]

Dans la définition et la description d’un “territoire” (“terra” en italien), avec les facteurs du milieu et génétiques, un rôle important est joué par ceux agronomiques, techniques et de culture qui contribuent à caractériser le produit d’une zone spécifique. La production des vins obtenus à la suite d’une déshydratation partielle des raisins peut être considérée un intéressant exemple de caractérisation d’un «territoire». La Valpolicella, une région collinaire au nord-ouest de Vérone (Italie) est célèbre non seulement pour le vin qui porte le même nom, mais aussi pour le Recioto et l’Amarone qui sont obtenus à la suite d’une déshydratation des raisins en post-récolte. Le procédé de la déshydratation est obtenu avec des méthodes traditionnelles ou, plus récemment, avec de nouveaux systèmes de perte d’eau (intensité et vitesse) avec des conséquences sur la physiologie de la baie et les aspects qualitatifs du vin. Une comparaison entre une déshydratation rapide et une lente a été effectuée sur la variété Corvina et on reporte des données biochimiques et moléculaires liées à des paramètres qualitatifs (anthocyanine, resvératrol). Un deuxième exemple est représenté par la «Terra della Valle del Piave» et son vin Raboso Piave, souvent caractérisé par un goût assez désagréable dû aux polyphénols qui ne sont pas équilibrés et mûrs. L’application de la technique DMR (Doppia Maturazione Ragionata -Double Maturation Raisonnée) permet de résoudre ce problème: on reporte les données concernant l’effet de l’application de cette technique sur les propriétés organoleptiques du vin.

In the definition and description of a “territoire” (“terra”, in Italian), together with environmental and genetic factors, an important role is also played by agronomic, technical, and cultural aspects that contribute to characterize the produce of the specific area. The production of wines obtained following partial dehydration of harvested grapes may be considered as an interesting example of “territoire” characterization. Valpolicella, a hilly area North-West of Verona (Italy), is famous not only for its homonymous wine but also for the Recioto and Amarone that are obtained following dehydration of harvested grapes. The withering process is accomplished with traditional methods, or, in recent years, with new drying systems differently affecting the loss of water process (rate, intensity) with consequences on berry physiology and wine quality traits. Slow and rapid dehydration rates have been compared and some biochemical and molecular parameters linked to quality aspects (anthocyanins, resveratrol) have been monitored in the cv Corvina. A second example is represented by “Terra della Valle del Piave” and its Raboso wine, characterized by a strong and sometimes unpleasant taste, due to unbalanced polyphenol content. The application of the DMR technique (cluster bearing canes detached and berries allowed to over-ripen in the field) solves this problem: results concerning organoleptic evaluations of grapes and wines obtained using this technique are reported.

DOI:

Publication date: January 12, 2022

Issue: Terroir 2004

Type: Article

Authors

P. Tonutti (1), G. B. Tornielli (2), G. Cargnello (3)

(1) Department of Environmental Agronomy and Crop Science – University of Padova – Sede di Conegliano Viale XXVIII Aprile, 14, 31015 Conegliano – Treviso (Italy)
(2) CIVE – University of Verona Via della Pieve 64, 37029 San Floriano-Verona (Italy)
(3) SOC Tecniche Colturali – Istituto Sperimentale per la Viticoltura Viale XXVIII Aprile, 26 31015 Conegliano – Treviso (Italy)

Contact the author

Keywords

Over-ripening, dehydration techniques, post-harvest, organoleptic quality, sensory evaluation

Tags

IVES Conference Series | Terroir 2004

Citation

Related articles…

Effect of the commercial inoculum of arbuscular mycorrhiza in the establishment of a commercial vineyard of the cultivar “Manto negro

The favorable effect of symbiosis with arbuscular mycorrhizal fungi (AMF) has been known and studied since the 60s. Nowadays, many companies took the chance to start promoting and selling commercial inoculants of AMF, in order to be used as biofertilizers and encourage sustainable biological agriculture. However, the positive effect of these commercial biofertilizers on plant growth is not always demonstrated, especially under field conditions. In this study, we used a commercial inoculum on newly planted grapevines of a local cultivar grafted on a common rootstock R110. We followed the physiological status of vines, growth and productivity and functional biodiversity of soil bacteria during the first and second years of 20 inoculated with commercial inoculum bases on Rhizophagus irregularis and Funeliformis mosseaeAMF at field planting time and 20 non-inoculated control plants. All the parameters measured showed a neutral to negative effect on plant growth and production. The inoculated plants always presented lower values of photosynthesis, growth and grape production, although in some cases the differences did not reach statistical significance. On the contrary, the inoculation supposed an increase of the bacterial functional diversity, although the differences were not statistically significant either. Several studies show that the effect of inoculation with AMF is context-dependent. The non-favorable effects are probably due to inoculation ineffectiveness under complex field conditions and/or that, under certain conditions, AMF presence may be a parasitic association. This puts into question the effectiveness of its application in the field. Therefore, it is recommended to only resort to this type of biofertilizer when the cultivation conditions require it (e.g., very low previous microbial diversity, foreseeable stress due to drought, salinity, or lack of nutrients) and not as a general fertilization practice.

Wine industry, digital transformation, and sustainability: a systematic literature 

This paper aims to (i) identify the state of the art regarding digital transformation in the transition to sustainability in the wine industry, (ii) analyze the adoption of digital technologies at different stages of the winemaking process and their contribution to the triple bottom line of sustainability, and (iii) present a research agenda that facilitates the development of the field, providing contributions to both literature and managerial practice.

Effect of different plant fibers on the elimination of undesirable compounds in red wine 

The presence of undesirable compounds in wines, such as ota, biogenic amines and pesticides residues, affects wine quality and can cause health problems for the consumer. Additionally, an excess of tannins can produce an undesirable increase in the astringency and bitterness of the wine, so tannins are also a target for reduction. The main tool that a winemaker has to reduce their content in the wine is fining. However, some of the fining agents commonly used in the winery can cause allergies or even increase the protein content in the wine, increasing the turbidity.

NEUROPROTECTIVE AND ANTI-INFLAMMATORY PROPERTIES OF HYDROXYTYROSOL: A PROMISING BIOACTIVE COMPONENT OF WINE

Hydroxytyrosol (HT) is a phenolic compound present in olives, virgin olive oil and wine. HT has attracted great scientific interest due to its biological activities which have been related with the ortho-dihydroxy conformation in the aromatic ring. In white and red wines, HT has been detected at concentrations ranging from 0.28 to 9.6 mg/L and its occurrence has been closely related with yeast metabolism of aromatic amino acids by Ehrlich pathway during alcoholic fermentation. One of the most promising properties of this compound is the neuroprotective activity against pathological mechanisms related with neurode-generative disorders including Alzheimer’s and Parkinson’s disease.

Comparison between the volatile chemical profile of two different blends for PDO “Valpolicella Superiore”

Valpolicella is a famous wine producing region located in the north of Verona close to Garda lake and owes its fame above all to the production of two Protected Designation of Origins (PDOs) withered wines: Amarone and Recioto. Nowadays the production of another PDO, Valpolicella Superiore is gaining more attention by the consumers, increasing the interest of the wineries to improve the quality of this wines