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…

Biotic and abiotic factors affecting physiological aspects underlying vegetative vigour in two commercial grapevine varieties

Grapevine vigour, defined as the propensity to assimilate, store and/or use non-structural sugars for allowing fast growth of shoots and producing large canopies[1], is crucial to optimize vineyard management. Recently, a model has been proposed for predicting the vigor of young grapevines through the measurement of the vegetative growth and physiological parameters, such as water status and gas exchange[2]. Our objectives were (1) to explore the influence of the association of two grapevine varieties (Tempranillo and Cabernet Sauvignon, grafted onto R110 rootstocks) with arbuscular mycorrhizal fungi (AMF) on the vegetative vigour of young plants; and (2) to assess the effect of environmental factors linked to climate change on the vegetative vigour of Cabernet Sauvignon.

Overall conceptual characterization of aged dry white wines using a mental descriptive questionnaire

The purpose of the present study was to understand the overall concept of an aged dry white wine using a descriptive mental questionnaire. A total of 680 worldwide participants, grouped according to their involvement in the wine business, replied to an online questionnaire to characterize the sensory analytical and synthetic descriptors of an aged dry white wine. The descriptors were selected using a Check-All-That-Apply (CATA) approach concerning wine colour, aroma, taste, mouthfeel, and global appreciation.

Cover crop management and termination timing have different effects on the maturation and water potentials of Glera (Vitis vinifera L.) in Friuli-Venezia Giulia

Inter-row soil tillage in vineyards, stimulates vigor and production due to the absence of competition for water and nutrients, however negatively affects organic matter content, soil erosion, and compaction, resulting in reduced fertility. In this study, we investigated the effects of different cover crop management approaches, including cultivation type and termination timing, on the physiological and productive responses of a Glera vineyard.
The experimental trial was conducted in Precenicco (UD) from 2019 to 2021. A commercial mixture for autumn cover cropping was sown in alternating rows, and the sowing pattern was changed each year.

The use of plasma activated water in barrel disinfection: impact on oak wood composition

The use of barrels is a practice that improves the quality of wines. The porous structure of wood favors the accumulation of microorganisms that can deteriorate the quality of wines so that barrel cleaning and sanitizing treatments are essential. The burning of sulphur discs has been the most common practice in winemaking because ots biocide effect. Nevertheless, its effectiveness is still insufficient and it is harmful for human health.

Quantifying water use diversity across grapevine rootstock-scion combinations

Vines require proper light levels, temperature, and water availability, and climate change is modifying these factors, hampering yield and quality. Despite the large diversity of rootstocks, varieties, and clones, we still lack knowledge of their combined effects and potential role in a warmer and dryer future. Therefore, we aim to characterize some of the existing diversity of rootstocks and genotypes and their interaction at the eco-physiological level, combining stomatal conductance (gs) and chlorophyll a fluorescence analysis.