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Publication . Article . 2020

Polyphenols and Resveratrol from Discarded Leaf Biomass of Grapevine (Vitis sp.): Effect of Cultivar and Viticultural Practices in Estonia

Reelika Rätsep; Kadri Karp; Mariana Maante-Kuljus; Alar Aluvee; Rajeev Bhat;
Open Access
English
Published: 04 Sep 2020 Journal: Agriculture, volume 10, issue 393 (issn: 2077-0472, Copyright policy )
Publisher: MDPI AG
Country: Estonia
Abstract

Grapevine leaves are a major by-product of viticulture practices derived from the leaf-removal from the fruit cluster zone in all vine growing regions. These leaves can be a valuable source of antioxidants to be used in pharmaceuticals or other health-related products. In this study, the leaves of grapevine cultivars were analysed by ultra-high performance liquid chromatograph-diode array detector () for the total polyphenols (TPC) and resveratrol affected by cultivar, leaf-removal time and viticultural practice. The effect of cultivar varied yearly, European grapevine cv. &lsquo

grown under the polytunnel had decreased TPC in leaves. In conclusion, cultivar selection, viticultural practice and leaf-removal time contribute significantly to the accumulation of total polyphenols and resveratrol. Results of this study will contribute to better utilization of biomass produced in the vineyards, help to decrease the negative environmental impacts, and provide an overview on various factors affecting the biochemical constituents, especially in leaves.

1) were higher in leaves of interspecific hybrid cvs. &lsquo

had increased TPC and resveratrol in comparison to &lsquo

1) and resveratrol (1.061 mg 100 g&minus

during full fruit ripeness. Cv. &lsquo

in 2018. TPC (1213&ndash

Hasansky Sladky&rsquo

1841 mg 100 g&minus

in 2017, but &lsquo

Boskoop&rsquo

s Glory&rsquo

Solaris&rsquo

Regent&rsquo

Rondo&rsquo

Zilga&rsquo

and &lsquo

, &lsquo

Subjects by Vocabulary

Library of Congress Subject Headings: lcsh:Agriculture (General) lcsh:S1-972

Microsoft Academic Graph classification: Viticulture Vine Cultivar Resveratrol chemistry.chemical_compound chemistry Biomass Biology Polytunnel Ripeness Horticulture Polyphenol

Subjects

<i>Vitis</i> interspecific hybrids, grapevine leaves, by-products of grape, polyphenols, Plant Science, Agronomy and Crop Science, Food Science, Vitis interspecific hybrids, articles

Related Organizations
Funded by
EC| VALORTECH
Project
VALORTECH
ERA Chair for Food (By-) Products Valorisation Technologies of the Estonian University of Life Sciences
  • Funder: European Commission (EC)
  • Project Code: 810630
  • Funding stream: H2020 | CSA
Related to Research communities
Rural Digital Europe
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