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IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2010 9 Geology and Soil: effects on wine quality (T2010) 9 Risposte enologiche del Nero d’Avola su suoli a diverso grado di salinità

Risposte enologiche del Nero d’Avola su suoli a diverso grado di salinità

Abstract

[English version below]

Vengono riportati i risultati enologici di uno studio condotto sul Nero d’Avola in un tipico ambiente viticolo siciliano, in cui insistono suoli che presentano un diverso grado di salinità. La salinità di un suolo è il tenore in sali solubili presenti in un terreno. I Sali sono indispensabili per la vita delle piante, ma se la loro quantità è elevata può pregiudicarne la vita. Un suolo si definisce salino quando il valore della conduttività elettrica dell’estratto acquoso a saturazione è pari o superiore a 4. La conduttività elettrica (ECe) è direttamente proporzionale al contenuto di sali solubili. In Sicilia i suoli “affetti” da salinità occupano un’area di 600.000 ettari, concentrati principalmente nella Sicilia centro meridionale ed in parte in quella occidentale. La prova sperimentale si è svolta in un’azienda viticola ubicata nel comune di Santa Margherita Belice (AG) a 280 m. slm, in un vigneto di Nero d’Avola, allevato a controspalliera. La caratteristica di questo vigneto è quella avere lungo i filari, che dall’alto vanno verso il basso, un diverso tenore di contenuto salino tanto che è stato possibile impostare tre differenti tesi. Alla vendemmia le uve delle singole tesi sono state vinificate, presso la cantina sperimentale dell’IRVV, adottando un identico protocollo di trasformazione per non interferire sulla qualità finale dei prodotti.
Per verificare eventuali differenze nei vini delle diverse tesi, sono stati determinati i parametri analitici più importanti, tra cui i polifenoli, gli antociani, i flavonoidi, la componente minerale, ecc. Sono state effettuate, inoltre, le analisi strumentali qualitative e quantitative dei composti volatili responsabili della componente aromatica.

We show the results of a study on Nero d’Avola in a typical Sicilian environment, with soil at different salinity. The salinity of soil is its content of soluble salts. The salts are essential for plant life, but high quantity can affect negatively. A soil is defined saline as the value of electrical conductivity of the aqueous extract at saturation is equal to or greater than 4. Electrical conductivity (ECe) is directly proportional to the content of soluble salts. In Sicily, the land “affected” by salinity have an area of 600,000 hectares, concentrated mainly in central southern Sicily and partly in the west. The experimental test was conducted in the municipality of Santa Margherita Belice (AG) at 280 m. asl, in a vineyard of Nero d’Avola, trained in espalier. The characteristic of this vineyard is to have along the rows which concentration of salt content changes so that it was possible to set three different thesis. At harvest the grapes of each thesis were fermented in the experimental winery of IRVV by identical protocol processing for not interfering on the quality of final products. To verify possible differences in the wines of various thesis, the most important analytical parameters have been determined, including polyphenols, anthocyanins, flavonoids, the mineral component, etc. We realize also instrumental qualitative and quantitative analysis of volatile compounds responsible for flavor component.

DOI:

Publication date: December 3, 2021

Issue: Terroir 2010

Type: Article

Authors

Antonio Sparacio (1), Giuseppe Genna (1), Leo Prinzivalli (1), Salvatore Sparla (1), Vincenzo Melia (1), Salvatore Raimondi (2), Antonella Verzera (3)

(1) Istituto Regionale della Vite e del Vino – Via Libertà 66, Palermo – Italia
(2) DAAT – Università degli Studi di Palermo- Viale delle Scienze, Palermo – Italia
(3) DCOB – Università degli Studi di Messina – Salita Sperone 31, Messina – Italia

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Keywords

Nero d’Avola, Sicilia, suoli salini, salinità
Nero d’Avola, Sicily, salinity

Tags

IVES Conference Series | Terroir 2010

Citation

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