Influence of Different Solvents on the Phenolic Compounds Content Grape Bark Extracts (Vitis vinifera) from Syrah Variety

Euzélia  Lima de Souza1; Talita Sousa Nascimento; Gabriele  de Abreu Barreto; Ingrid  Lessa Leal; Jeancarlo  Pereira dos Anjos; Bruna Aparecida  Souza Machado

doi:10.34178/jbth.v2i3.79

Euzélia Lima de Souza1
Talita Sousa Nascimento
Gabriele de Abreu Barreto
Ingrid Lessa Leal
Jeancarlo Pereira dos Anjos
Bruna Aparecida Souza Machado

DOI: https://doi.org/10.34178/jbth.v2i3.79

Keywords: Antioxidants. Waste. Grape Peel. Chromatography.

Abstract

Grape bark from the wine industry still contains significant amounts of phenolic compounds. Specific characteristics of the applied solvents influence the extraction of phenolic compounds directly. This study aimed to evaluate the influence of different solvents obtaining phenolic compounds in Syrah grape bark
extracts by High-Performance Liquid Chromatography (HPLC). Grape peel extracts were prepared with three different solvents (water, 50%, and 80% grain alcohol), and evaluated using standard curve with 15 phenolic compounds. It was not possible to quantify the phenolic compounds, but the chromatograms
suggest the presence of some of them. The solvent that provided the best interaction with grape peel was 50% grain alcohol.