Effect of viticulture practices on concentration of polyphenolic compounds and total antioxidant capacity of Southern Italy red wines.
This study aims to assess the effect of three wine grape varieties, three training systems and two bud loads on the Total Antioxidant Capacity (TAC) and polyphenolic composition of Southern Italy red wines produced, during two vintages. Overall, Primitivo, Malvasia nera of Brindisi-Lecce and Montepulciano as grape varieties, single Guyot (SG), single spur pruned low cordon (SLC) and single spur pruned high wire cordon (HSLC) as training systems, 8 and 12 buds/plant as bud loads were compared. Significant differences in the polyphenolic families were shown by the grape varieties and by modifying the vine growing practices. Moreover, the results demonstrated that varieties influenced the TAC (indicating the Malvasia as the more effective one), that SLC led to the lowest level of TAC and that 8 buds/plant increased it. The relationship between antioxidant indexes and the concentration of single polyphenolic families was evaluated and the highest correlation was found between the total polyphenols and the proanthocyanidins family.
Consiglio per la Ricerca e la sperimentazione in Agricoltura - Unità di ricerca per l'uva da tavola e la vitivinicoltura in ambiente mediterraneo (CRA-UTV), Via Casamassima 148, 70010 Turi (BA), Italy.
Antonio
A
Coletta
Università di Torino, Dipartimento di Chimica, Via Pietro Giuria 7, I-10125 Torino, Italy.
Silvia
S
Berto
Consiglio per la Ricerca e la sperimentazione in Agricoltura - Unità di ricerca per l'uva da tavola e la vitivinicoltura in ambiente mediterraneo (CRA-UTV), Via Casamassima 148, 70010 Turi (BA), Italy.
Pasquale
P
Crupi
Consiglio per la Ricerca e la sperimentazione in Agricoltura - Centro di ricerca per l'Enologia (CRA-ENO), Via Pietro Micca 35, 14100 Asti, Italy.
Maria Carla
MC
Cravero
Consiglio per la Ricerca e la sperimentazione in Agricoltura - Unità di ricerca per l'uva da tavola e la vitivinicoltura in ambiente mediterraneo (CRA-UTV), Via Casamassima 148, 70010 Turi (BA), Italy.
Pasquale
P
Tamborra
Consiglio per la Ricerca e la sperimentazione in Agricoltura - Unità di ricerca per l'uva da tavola e la vitivinicoltura in ambiente mediterraneo (CRA-UTV), Via Casamassima 148, 70010 Turi (BA), Italy.
Donato
D
Antonacci
Università di Torino, Dipartimento di Chimica, Via Pietro Giuria 7, I-10125 Torino, Italy.
Pier Giuseppe
PG
Daniele
Università di Torino, Dipartimento di Chimica, Via Pietro Giuria 7, I-10125 Torino, Italy. Electronic address: enrico.prenesti@unito.it.
Enrico
E
Prenesti
D000383:Agriculture; D000975:Antioxidants / Q000032:analysis*; D007558:Italy; D010936:Plant Extracts / Q000032:analysis*; D059808:Polyphenols / Q000032:analysis*; D044945:Proanthocyanidins / Q000032:analysis; D027843:Vitis / Q000737:chemistry* / Q000145:classification; D014920:Wine / Q000032:analysis*
D000975:Antioxidants; D010936:Plant Extracts; D059808:Polyphenols; D044945:Proanthocyanidins
BRAI; Bud load; Grape variety; Polyphenolic compounds; Red grape; TEAC; Total antioxidant capacity; Training system; Wine