Chemical process to improve natural grapevine-cane extract effectivity against powdery mildew and grey mould
Langue
EN
Article de revue
Ce document a été publié dans
Oeno One. 2021, vol. 55, n° 1, p. 81-91
Résumé en anglais
Grapevine canes are vine growing byproducts studied for their antimicrobial activities. These properties are directly connected to the stilbene content; oligomeric stilbenes being the most active. In this study, we propose ...Lire la suite >
Grapevine canes are vine growing byproducts studied for their antimicrobial activities. These properties are directly connected to the stilbene content; oligomeric stilbenes being the most active. In this study, we propose a chemical process, based on oxidative coupling, using metals to increase the oligostilbene rate and the biological effectivity of cane extract against grapevine pathogens. A total of ten compounds were obtained and identified by combining LCMS and NMR spectroscopies, including four newly reported compounds: Trans-oxistilbenin C, trans-oxistilbenin D, and cis- and trans-oxistilbenin E. The extract and the main stilbene formed were evaluated for their preventive effects on Plasmopara viticola and Botrytis cinerea growth. The processed extract was highly effective against both pathogens.< Réduire
Mots clés en anglais
Resveratrol
Viniferin
Grapevine
Oxidative coupling
Plasmopara viticola
Botrytis cinerea
Project ANR
Développement d'une infrastructure française distribuée pour la métabolomique dédiée à l'innovation - ANR-11-INBS-0010
Unités de recherche