RT journal article
T1 Development and characterization of a pure stilbene extract from grapevine shoots for use as a preservative in wine
A1 Gutierrez Escobar, Rocío
A1 Fernández Marín, María I.
A1 Richard, Tristan
A1 Fernández-Morales, Ana
A1 Carbú Espinosa de los Monteros, María
A1 Cebrián-Tarancón, Cristina
A1 Torija, María Jesús
A1 Puertas, Belén
A1 Cantos-Villar, Emma
A2 BiomedicinaBiotecnología y Salud Pública
K1 Food safety
K1 added-value wines
K1 Bretanomyces bruxellensis
K1 Sustainability
K1 E-e-viniferin
AB Grapevine shoots, known to be a source of bioactive stilbenes, are considered one of the most important and abundant waste products from the vineyard. The objective of this study was to obtain a pure stilbene extract from grapevine shoots and test its properties, mainly antimicrobial ones, as a preservative in wine. A new extract with a purity of 99% in stilbenes was obtained by centrifugal partition chromatography. The extract was characterized by HPLC-MS, the main compounds being E-ε-viniferin (70%) and E-resveratrol (18%). The stability conditions for the extract solution were low temperature (4 °C) and darkness for a maximum of 21 days. Data regarding to the stability of E-ϵ-viniferin, ω-viniferin and r-viniferin are reported first. The antimicrobial activity of the extract was higher against yeast (Brettanomyces bruxellensis, Zygosaccharomyces bailli, Haseniaspora uvarum, Candida zemplinina) than against bacteria (Lactobacillus hilgardii, Oenococcus oeni, Pediococcus pentasaceus). The best antimicrobial activity was found on Brettanomyces bruxellensis and Zygossaccharomyces bailli. The aromatic characterization of the extract allows us to establish that it does not affect the sensory properties of wine, and thus wine quality is not compromised with the addition of the extract. All of the above allow us to propose ST99 as a promising alternative to SO2 in wines, including rose and white wines.
SN 0956-7135
YR 2021
FD 2021
LK http://hdl.handle.net/10498/33402
UL http://hdl.handle.net/10498/33402
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 05-nov-2026