Elemental profile and enological characteristics of Vitis vinifera L. cv. Aglianico grapes from a quality wine terroir in southern Italy: relationship with soil composition and chemical properties

Pedoenvironmental factors play a key role in winegrape quality. In five vineyards, elemental profiles (B, Ca, Cu, Fe, K, Li, Mg, Mn, Na, Ni, P, S, Si, Sr, Zn) of grape seeds, pulp, skin, and wine-like-juice (WLJ) (except S), and soil element content (NH4OAc extraction) were analyzed by Inductively-Coupled-Plasma Optical-Emission-Spectrometry. ANOVA showed homogeneity of grape and soil composition across vineyards. Bioconcentration factors (BFs) indicated Fe, B, Zn, Cu uptake from soil to all grape tissues. Significant correlations between grapes and WLJ element content suggested K, Mg, Na, Si, Sr preferential transfer from pulp and skin to WLJ. Principal Component Analysis highlighted correlations between BFs of Cu, Mn, Na, P, S, Si, Zn, Li, and grape pH, WLJ anthocyanins, tannins and total phenols, measured spectrophotometrically, with peculiar soil properties, including electrical conductivity, exchangeable Na and K, silt fraction, pH, carbonates, indicating a terroir control on grape element uptake and quality traits.