Grape Leaves as a Natural Antioxidant Source: Determination of Total Phenolic Compound Changes

Abstract

In this study, total phenolic compounds which possess health-promoting effects and provide basic nutrition were aimed to determine the alterations in different grapevine leaves. Total phenolic content was determined using Folin-Ciocalteu colorimetric method by using a spectrophotometer. At the result of the study, it was determined that contents of total phenolic in leaves collected from different grape cultivars were varied to cultivars and grape leaves had high phenolic compounds as berries. Therefore the grape leaves especially wine grapes such as Narince, Boğazkere ve Kalecik Karası may be used as an easily accessible source of natural antioxidants and food supplement at pharmaceutical and food industry.

Effect of grape ( Vitis vinifera L.) varieties and harvest periods on bioactive compounds, antioxidant activity, phenolic composition, mineral contents, and fatty acid compositions of Vitis leave and oils

“…Polyphenols of grape by‐products such as leaves, seed, and skin are rich in bioactive compounds. Bioactive phytochemicals are found in grape leaves for consumers and industries for culinary purposes (Anđelković, Radovanović, Anđelković, & Radovanović, 2015; Babalık & Göktürk Baydar, 2019; Borai et al., 2017; Fenglin, Ruili, Bao, & Liang, 2004; Lima, Pereira, Baraldi, & Malheiro, 2017; Radovanovic, Andjelkovic, Radovanovic, Milenkovic‐Andjelkovic, & Dekic, 2015). Grapevine leaf composition is influenced by soil properties and the vegetative stage (Páscoa, 2018).…”

Effect of grape varieties on bioactive properties, phenolic composition, and mineral contents of different grape‐vine leaves

“…It is known that leaf chemical composition varies significantly over the vegetative cycle, especially during the ripening period due to environmental factors or the plant development (Batovska et al., 2008). At the result of the study carried out by Babalık and Göktürk Baydar (2019), contents of total phenolic in leaves varied depending on different grape cultivars. It was determined phenolics content, radical scavenging activity and mineral composition of 22 grapevine leaves of diverse varietal origin which collected from two vineyards located in Central Serbia (Belgrade vineyard area) and Eastern Serbia (Mlava vineyard area) (Pantelic et al., 2017).…”