Chemical process to improve natural grapevine-cane extract effectivity against powdery mildew and grey mould

OENO One

Tristan Richard¹  Alain Decendit¹  Josep Valls Fonayet¹  Stéphanie Cluzet¹  Eric Pedrot¹  David Taillis¹  ToniEl Khawand¹  Grégory Da Costa¹ 

[1] Université de Bordeaux, ISVV, EA 4577, USC 1366 INRA, Unité de Recherche Œnologie, Molécules d’Intérêt Biologique, 210 chemin de Leysotte, F-33882 Villenave d'Ornon;

关键词: resveratrol;    viniferin;    grapevine;    oxidative coupling;    Plasmopara viticola;    Botrytis cinerea;   

DOI  :  

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown