Papers by Antonio Coletta
European Food Research and Technology, 2011
ABSTRACT The aim of this study was to assess the influence of different winemaking technologies o... more ABSTRACT The aim of this study was to assess the influence of different winemaking technologies on the chemical characteristics and, in particular, on the phenolic fraction of Aglianico, Montepulciano, Nero di Troia and Sangiovese wines produced in Apulia, Southern Italy. Four different winemaking technologies were compared: control (traditional, 5 days of maceration at 25 °C with three daily punching-down), prolonged maceration (10 days), addition of ellagic tannins and cryomaceration (24 h at 5 °C using dry ice), without any other oenological treatment. Results showed that the different technologies slightly influenced the phenolic fraction of Aglianico, which is known to be naturally rich of phenols. On the contrary, the prolonged maceration led to an increase of total phenols (TP) in Nero di Troia (2,592 mg/kg vs. 2,115 mg/kg of control) and a decrease in Sangiovese (869 mg/kg vs. 1,013 mg/kg); the addition of tannins led to an increase of TP in Montepulciano (1,358 mg/kg vs. 1,216 mg/kg) and to a decrease in Sangiovese (916 mg/kg vs. 1,013 mg/kg); and cryomaceration led to a decrease of anthocyanins in all cultivars (about 15%). Phenols extraction from grapes was found to be mostly dependent on the grape variety rather than on the applied winemaking technology.
Environmental Monitoring and Assessment, 2016
The present geochemical study concerns the impact of viticultural practices in the chemical compo... more The present geochemical study concerns the impact of viticultural practices in the chemical composition of the grape cultivar "Negroamaro" in Apulia, a southern Italian region renowned for its quality wine. Three types of soil management (SM), two cover cropping with different mixtures, and a soil tillage were considered. For each SM, the vines were irrigated according to two irrigation levels. Chemical composition of soil and of berries of Vitis vinifera cultivar "Negroamaro" were analyzed by X-ray fluorescence, inductively coupled plasma-mass spectrometry and multivariate statistics (linear discrimination analysis). In detail, we investigated major and trace elements behavior in the soil according to irrigation levels, the related index of bioaccumulation (BA) and the relationship between trace element concentration and soil management in "Negroamaro" grapes. The results indicate that soil management affects the mobility of major and trace elements. A specific assimilation of these elements in grapes from vines grown under different soil management was confirmed by BA. Multivariate statistics allowed to associate the vines to the type of soil management. This geochemical characterization of elements could be useful to develop fingerprints of vines of the cultivar "Negroamaro" according to soil management and geographical origin.
Vitis Journal of Grapevine Research, 2008
Malvasia nera di Brindisi' and 'Malvasia nera di Lecce' are two of the few Malvasias with black b... more Malvasia nera di Brindisi' and 'Malvasia nera di Lecce' are two of the few Malvasias with black berries and belong to the Apulian ampelographic assortment (South Italy). Their presumed synonymy has been recently ascertained with SSR markers and therefore these two black 'Malvasias' can be considered as an unique variety. We discovered that this cultivar is the cross between 'Malvasia bianca lunga' alias 'Malvasia del Chianti' and 'Negroamaro' by using 42 nuclear SSR. Both parents belong to the Apulian varietal resources, since centuries. So far, 'Malvasia nera di Brindisi/Lecce' origin has been obscure; now we may assert that this cultivar was born right in Apulia. Three sets of chloroplast SSR loci were used to determine the female and the male parent: 6 ccmp loci, already used in previous pedigree studies, 15 ccSSR loci and 2 NTCP loci, derived from tobacco. The second set of loci was sequenced in order to compare the length of the markers with the reference species where they were originally obtained: in 4 cases no microsatellite motives were detected and in other 4 cases the perfect repetition found in tobacco was not maintained in grape. Unfortunately, the three sets of markers failed to show any polymorphism. A detailed comparison of the black Malvasia morphology with its two parents showed a closer similarity to 'Negroamaro'. Also the anthocyanin profile is in agreement with that of the black parent; its varietal aroma presents interesting levels of free and bound 2-phenylethanol, responsible for rose flavor, and of bound linalool compounds.
Parole chiave: nutrizione uve da tavola, impatto ambientale uve da tavola, riduzione apporti azot... more Parole chiave: nutrizione uve da tavola, impatto ambientale uve da tavola, riduzione apporti azotati. Mots clé: nutrition raisins de table, impact ambiant raisins de table, réduction apporte azotée.
Riassunto La ricerca, (biennale) effettuata nell'ambito del Progetto Vitivin-valut (finanziam... more Riassunto La ricerca, (biennale) effettuata nell'ambito del Progetto Vitivin-valut (finanziamento MiPAAF-CIPE), ha mirato alla ottimizzazione del rapporto nutritivo tra N organico ed N minerale all'interno di una dose di azoto totale per ettaro stabilita. Gli apporti organici sono stati effettuati utilizzando formulazioni contenenti azoto e carbonio organico proveniente da pelli e cuoio (scleroproteine) idrolizzate e caratterizzate dalla lenta cessione dell'azoto (slow release). Le prove si sono svolte in Italia nel comprensorio a D.O.C. "Gioia del Colle" situato in Puglia su cv. Sangiovese, innestata su 34 EM, allevata a tendone, dell'età di 24 anni, con sesto di m (2,5 x 2,5) in irriguo. Sono stati effettuati rilievi fisiologici: germogliamento, fertilità reale e potenziale; produttivi: produzione per pianta e per ettaro; qualitativi: peso medio di bacca e grappolo; analitici: zuccheri, acidità totale, pH. Nei due anni, la maggiore produzione ed il maggio...
IX International Conference on Grape Genetics and Breeding, 2009
... Weising, K. and Gardner, R. 1999. A set of conserved PCR primers for the analysis of simple s... more ... Weising, K. and Gardner, R. 1999. A set of conserved PCR primers for the analysis of simple sequence repeat polymorphism in chloroplast genomes of dicotyledonous angiosperms. Genome 42:9-19. Tables Table 1. Molecular profiles of 'Malvasia bianca lunga', 'Malvasia nera ...
Primitivo is a relevant local variety of Apulia region (Southern Italy) used to produce DOP red w... more Primitivo is a relevant local variety of Apulia region (Southern Italy) used to produce DOP red wines. In the same region Cabernet sauvignon is cultivated too and it is used in purity or blended with other local varieties to produce DOP or IGT wines. The purpose of this study was to compare the chemical-physical and sensory characteristics of some Primitivo and Cabernet Sauvignon wines produced from grapes grown with different training systems: simple curtain, unilateral and bilateral cordon, unilateral and bilateral Guyot. The grapes were grown in the Brindisi area (Apulia) and the wines were produced using traditional winemaking. The chemical-physical composition and the volatile compounds of the wines were analyzed. A trained panel described the sensory profiles of wines and evaluated their acceptability. For both varieties, the results showed that the most interesting wines were those produced with the grapes from the bilateral cordon training system, whereas the grapes grown on the simple curtain gave the least appreciable products.
Uploads
Papers by Antonio Coletta