Terroir 2008 banner
IVES 9 IVES Conference Series 9 Rare earth elements in grapes and soil: study of different soil extraction methods

Rare earth elements in grapes and soil: study of different soil extraction methods

Abstract

Lanthanides, together with scandium and yttrium, make up the group of Rare Earth Elements (REEs). An official method for analysis of the bioavailable REEs accumulated by plants, depending mainly on soil characteristics, chemical speciation in soil and the specific ability of the plant, is still lacking.
In this study we analysed the content of 13 REEs (yttrium, Y; lanthanum, La; cerium, Ce; praseodymium, Pr; neodymium, Nd; samarium, Sm; europium Eu; gadolinium, Gd; dysprosium, Dy; holmium, Ho; erbium, Er; thulium, Tm; ytterbium, Yb) in Chardonnay grapes in relation to the content in the soil, extracted using different methods in order to assess which of the extractants used could best reflect the amount of elements taken up by the plant.
The vineyard, located in north-eastern Italy, is characterised by a silt loam, calcareous, alkaline soil. Four different extraction methods were tested: (1) aqua regia microwave digestion; (2) with DTPA, CaCl2 and TEA; (3) with ammonium acetate and (4) with ammonium nitrate.
The amount of REEs extracted followed the order: aqua regia > DTPA > CH3COONH4 > NH4NO3. Compared to the “so-called total” content in soil, the sum of the REEs extracted with DTPA, ammonium acetate and ammonium nitrate was roughly 0.80%, 0.065% and 0.002% and each individual element was extracted in amounts of <2.9%, <0.5% and <0.2% respectively. Only 7 elements (Y, La, Sm, Eu, Dy, Er, Tm) were found in quantifiable amounts after extraction with ammonium nitrate.
The concentration of individual REEs in berries would seem to correspond best to the concentrations extracted using aqua regia.

Download the PDF

DOI:

Publication date: December 8, 2021

Issue: Terroir 2008

Type : Article

Authors

Daniela BERTOLDI (1,2),Roberto LARCHER (1),Giorgio NICOLINI (1),Massimo BERTAMINI (1), Giuseppe CONCHERI (2)

(1) IASMA Research Centre. Via E.Mach, 1. 38010 San Michele all’Adige (TN) Italy
(2) Agricultural Biotechnology Department, University of Padova. Viale dell’Università, 16. 35020 Legnaro (PD) Italy

Contact the author

Keywords

Rare Earth Elements, berries, soil, soil extraction, ICP-MS

Tags

IVES Conference Series | Terroir 2008

Citation

Related articles…

Influence of preflowering basal leaf removal on aromatic composition of cv. Tempranillo wine from semiarid climate (Extremadura Western Spain)

Abstract In this work the effects of early leaf removal performed manually at preflowering phenological stage, on the volatile composition of Tempranillo (Vitis vinifera L.) wines were studied. From 2009-2011 vintages 34 wine volatile compounds were identified and quantified by gas chromatography-mass spectrometry (GC-MS) where early leaf removal only modified 25 of them. The total C6 compounds, acetates and volatiles acids (with exception of isobutyric acid) were affected by defoliation, whereas alcohols and esters showed a minor effect. Furthermore the vintage effect also was shown.

Read More

Promoting sustainability in Mediterranean agriculture: insights from the Portuguese vine & wine sector

Agroecology is an integrated approach that simultaneously applies ecological and social concepts and principles to redesign and manage food and agricultural systems, promoting agroecosystems with the necessary biological, socio-economic, and institutional diversity and alignment to support greater efficiency. Thus, several studies have been carried out at promoting the adoption of more agroecological practices among farmers and a wider audience concerning soil conservation and health maintenance.

Read More

Evaluation of Polarized Projective Mapping as a possible tool for attributing South African Chenin blanc dry wine styles

Multiple Factor Analysis (MFA) According to the Chenin blanc Association of South Africa, there are three recognized dry wine styles, Fresh and Fruity (FF), Rich and Ripe Unwooded (RRU), and Rich and Ripe Wooded (RRW), classically attributed with the help of sensory evaluation. One of the “rapid methods” has drawn our attention for the purpose of simplifying and making style attribution for large sample sets, evaluated during different sessions, more robust. Polarized Projective Mapping (PPM) is a hybrid of Projective Mapping (PM) and Polarised Sensory Positioning (PSP). It is a reference-based method in which poles
(references) are used for the evaluation of similarities and dissimilarities between samples.

Read More

Using Landsat LST data to predict vineyard productivity anomalies: A case study in the Euganean Hills wine region, Italy

In the current scenario of climatic variability, even though the vine (Vitis vinifera) is a species generally considered very fertile, the process of bud differentiation is particularly influenced by the weather trend not only of the current year but also of the previous one.

Read More

WHICH IMPACT FOR PROANTHOCYANIDIC TANNINS ON RED WINE FRUITY AROMA? SENSORY AND PHYSICOCHEMICAL APPROACHES

Previous research on the fruity character of red wines highlighted the role of esters. Literature provides evidence that, besides these esters, other compounds that are not necessarily volatiles may have an important impact on the overall aroma of wine, contributing to a modulation of its global aromatic expression. The goal of this work was to assess the olfactory consequences of a mixture between esters and proanthocyanidic tannins, through sensory and physico-chemical approaches.
Sensory analysis of numerous aromatic reconstitutions, including triangular tests, detection thresholds, and sensory profiles, were conducted in order to evaluate the sensory impact of tannins on red wine esters perception.

Read More