terclim by ICS banner
IVES 9 IVES Conference Series 9 GiESCO 9 GiESCO 2023 9 Hyperspectral imaging for the appraisal of varietal aroma composition along maturation in intact Vitis vinifera L. Tempranillo Blanco berries

Hyperspectral imaging for the appraisal of varietal aroma composition along maturation in intact Vitis vinifera L. Tempranillo Blanco berries

Abstract

Context and purpose of the study – The knowledge of the grape aromatic composition during ripening provides very important information for winegrowers, who may carry out different viticultural practices, or determine the harvest date more accurately. However, there are currently no tools that allow this measurement to be carried out in a non-invasive and rapid way.  For this reason, the aim of this work was to design a non-invasive methodology, based on hyperspectral imaging to estimate the aromatic composition and total soluble solids (TSS) of Tempranillo Blanco berries during ripening. 

Material and methods – A total of 236 spectra of intact grape berries were acquired, under laboratory conditions, by hyperspectral imaging (HSI) in the visible + short wave near infrared (VIS+SW-NIR) range (400-1000 nm) to estimate the aromatic composition, and the TSS, of Vitis vinifera L. Tempranillo Blanco berries during ripening. Calibration, cross-validation and prediction models were built by partial least squares (PLS), using as reference the concentration of 20 grape berries’ volatile compounds (terpenoids, C13norisoprenoids, benzenoids, fatty acids, and C6 compounds), measured by gas chromatography – mass spectrometry (GC-MS), and the concentration of total soluble solids (TSS), measured by refractometry. 

Results – Values of determination coefficients of cross-validation (Rcv2) ≥ 0.70, were obtained for all terpenoids (α-terpineol citral, linalool, and p-cymene), all C13 norisoprenoids (β-damascenone and β-ionone) and their total, all benzenoids (benzaldehyde, 2-phenylethanol, and benzyl alcohol) and their total, two fatty acids (octanoic acid, and nonanoic acid), four C6 compounds (2-hexenal, hexanal, 2-hexen-1-ol, and (Z)-3-hexen-1-ol) and their total, the sum of all families except C6 compounds (called as total positive compounds), and TSS.  Therefore, it can be affirmed that hyperspectral imaging in the VIS+SW-NIR range could be a suitable tool to estimate the aromatic and industrial maturities of Tempranillo Blanco grape berries in a simultaneous, contactless and non-destructive way.

DOI:

Publication date: July 3, 2023

Issue: GiESCO 2023

Type: Poster

Authors

S. Marín-San Román1, J. Fernández-Novales2,3*, C. Cebrián-Tarancón4, R. Sánchez-Gómez4, M. P. Diago2,3, T. Garde-Cerdán1

1Grupo VIENAP, Instituto de Ciencias de la Vid y del Vino (CSIC, Universidad de La Rioja, Gobierno de La Rioja). Ctra. de Burgos, Km. 6. 26007 Logroño, Spain
2Grupo TELEVITIS, Instituto de Ciencias de la Vid y del Vino (Universidad de La Rioja, CSIC, Gobierno de La Rioja). Ctra. de Burgos, Km. 6. 26007 Logroño, Spain
3Department of Agriculture and Food Science. University of La Rioja. Madre de Dios 53. 26007. Logroño, Spain
4Cátedra de Química Agrícola, E.T.S.I. Agrónomos y Montes, Departamento de Ciencia y Tecnología Agroforestal y Genética, Universidad de Castilla-La Mancha. Avda. de España, s/n. 02071 Albacete, Spain

Contact the author*

Keywords

volatile compounds, partial least squares, total soluble solids, non-invasive, VIS+SW-NIR, TF-SPME

Tags

GiESCO | GIESCO 2023 | IVES Conference Series

Citation

Related articles…

Les préparations biodynamiques 500 et 501 ont elles un effet sur la vigne ?

Dans le cadre de TerclimPro 2025, Markus Rienth a présenté un article IVES Technical Reviews. Retrouvez la présentation ci-dessous ainsi que l’article associé : https://ives-technicalreviews.eu/article/view/8396

Bilan de l’impact des pratiques viticoles sur la qualité biologique des sols

Dans le cadre de TerclimPro 2025, Laure Gontier a présenté un article IVES Technical Reviews. Retrouvez la présentation ci-dessous ainsi que l’article associé : https://ives-technicalreviews.eu/article/view/8481

Vers des systèmes viticoles économes en pesticide. Étude du réseau DEPHY-Vigne

Dans le cadre de TerclimPro 2025, Esther Fouillet a présenté un article IVES Technical Reviews. Retrouvez la présentation ci-dessous ainsi que l’article associé : https://ives-technicalreviews.eu/article/view/8318

Influence du porte-greffe sur le statut minéral du greffon

Dans le cadre de TerclimPro 2025, Elisa Marguerit a présenté un article IVES Technical Reviews. Retrouvez la présentation ci-dessous ainsi que l’article associé : https://ives-technicalreviews.eu/article/view/8387

La balance hydrique explique davantage la diversité intravariétale du titre alcoométrique du Merlot que l’accumulation des sucres

Dans le cadre de TerclimPro 2025, Charles Romieu a présenté un article IVES Technical Reviews. Retrouvez la présentation ci-dessous ainsi que l’article associé : https://ives-technicalreviews.eu/article/view/8506