terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 New food trend ahead? Highlighting the nutritional benefits of grapevine leaves

New food trend ahead? Highlighting the nutritional benefits of grapevine leaves

Abstract

The wine industry produces an enormous amount of waste every year. A wider inclusion of disregarded by-products in the human diet or its use as a source of bioactive compounds is a good strategy for reducing waste. It will not only introduce an added value to a waste product but also come upon the European Union and United Nations’ demands towards more sustainable agricultural approaches and circular economy.

Grapevine leaves, the most abundant waste product in the wine industry, can be used as a source of bioactive compounds and are present in the diets of several Mediterranean countries. In this work, we have shown the high potential of grapevine leaves for nutrition and as a source of bioactive compounds, which can be used for the pharmaceutical and cosmetic industries. We have selected seven different cultivars with high economic value and performed elemental, fatty acid (FA) and pigment profiling.

Total reflection X-ray fluorescence enabled the identification and quantification of 21 elements. Our results have shown that the ingestion of a small portion of grapevine leaves can provide World Health Organization’s daily recommended doses for several elements. We have also demonstrated that the most abundant FA in grapevine leaves are the health-promoting essential FAs: linoleic acid (omega-3) and linolenic acid (omega-6). Through pigment analysis, seventeen pigments were identified including chlorophylls, lutein, b-carotene and zeaxanthin, known for their antioxidant and anti-inflammatory properties.

Our results demonstrate that grapevine leaves have a high potential for human consumption as well as to be considered as sources of bioactive compounds and a thorough investigation on grapevine cultivars can reveal other applications besides wine.

Acknowledgements:

Work supported by Fundação para a Ciência e a Tecnologia (FCT-Portugal) through the Research Units BioISI (UID/MULTI/04046/2019), MARE (UIDB/04292/2020 and UIDP/04292/2020), ARNET – Aquatic Research Network Associated Laboratory (LA/P/0069/2020)) and PTDC/BIA-BQM/28539/2017 projects. FCT also funded the PhD grant (SFRH/BD/145298/2019) to GL and the research contracts (2022.07433.CEECIND) to MM and (2022.01746.CEECIND) to BD.

References:

1)  Maia M. et al. (2021) More than Just Wine: The Nutritional Benefits of Grapevine Leaves. Foods 10, 2251. DOI 10.3390/foods10102251

DOI:

Publication date: October 16, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Marisa Maia1,2,3*, Ana Rita Cavaco1,2, Gonçalo Laureano1,2, Jorge Cunha4, José Eiras-Dias4, Ana Rita Matos2,3, Bernardo Duarte3,5, Andreia Figueiredo1,2,3

1Grapevine Pathogen Systems Lab., Biosystems and Integrative Sciences Institute, Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal
2Biosystems and Integrative Sciences Institute, Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal;
3Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal
4Instituto Nacional de Investigação Agrária e Veterinária I.P:, Polo de Inovação de Dois Portos, Quinta da Almoinha 2565-191Dois Portos, Portugal
5MARE – Marine and Environmental Sciences Centre & ARNET – Aquatic Research Network Associated Laboratory, Faculty of Sciences of the University of Lisbon, Campo Grande 1749-016 Lisbon, Portugal

Contact the author*

Keywords

fatty acid content, elemental profile, pigments, nutrition

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Chemical and microbiological evaluation of Ribeiro wines (NW Spain)

Wine produced under Designation of Origin (DOP) Ribeiro, the oldest DOP in Galicia (NW Spain), are elaborated using local grape cultivars, grown at the valleys of Miño, Avia and Arnoia rivers. The landscape formed by slopes and terraces and the peculiar climate of continental character, softened by the proximity of Atlantic Ocean, make it an area of excellent aptitude for vine cultivation. In addition, small-scale farming and the use of traditional techniques for vineyard management provide a great diversity to Ribeiro wines. This study presents the evaluation of red and white wines (bottled or bulk wines) from DOP Ribeiro, produced between years 2018-2022.

Adsorption of tetraconazole by organic residues and vineyard organically-amended soils 

Spain is the country with the largest wine-producing area in the EU and its productivity is largely controlled applying fungicides. However, residues of these compounds can move and contaminate surface and groundwater. The objective of this work was to evaluate the capacity of bioadsorbents from different origin to adsorb and immobilize tetraconazole by themselves or when applied as organic soil amendment, and to prevent soil and water contamination by this fungicide. The adsorption of tetraconazole by 3 organic residues: spent mushroom substrate (SMS), green compost (GC) and vine pruning sawdust (VP), as well as by vineyard soils unamended and amended individually with these residues at 1.5% (w/w) was evaluated using the batch equilibrium technique.

Volatile composition of Cabernet Sauvignon wines from Argentina, Portugal and Spain

Cabernet Sauvignon is one of the most cultivated grape varieties worldwide being grown in different environmental conditions due to its excellent adaptability. Volatile compounds deeply contribute to the sensory properties of wines therefore to wine quality. The aim of this work was to compare the aroma profile of Cabernet Sauvignon wines from different geographical areas and climatic conditions, namely from Argentina, Portugal and Spain, from the vintage 2022. In addition, the volatile composition of the Cabernet Sauvignon Portuguese wines from three vintages was evaluated.

Cumulative effect of deficit irrigation and salinity on vine responses

Climate change is increasing water needs in most of the wine growing regions while reducing the availability and quality of water resources for irrigation. In this context, the sustainability of Mediterranean viticulture depends on grapevine responses to the combinations of water and salt stress. With this aim, this work studies the effects of deficit irrigation and salinity on the physiology of the Tempranillo cultivar (Vitis vinifera L.) grafted onto a drought and salinity tolerant rootstock (1103 Paulsen).

Application of DEXI PM Vigne sustainability tool to the assessment of alternative vineyard protection strategies

Implementing alternative grapevine systems that incorporate sustainable strategies and innovative farming practices is essential. However, we lack tools for measuring the impact of these new practices on the overall sustainability of vineyards. DEXi PM Vigne (Gary et al., 2015) is a tool developed for ex ante assessment of the sustainability of grapevine cropping systems, from the plot to the farm scale. In the present study, we focused on implementing new strategies of integrated crop protection management with limited pesticide use in vineyards.