{"id":5675,"date":"2024-08-04T20:30:33","date_gmt":"2024-08-04T20:30:33","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=5675"},"modified":"2024-08-04T20:30:33","modified_gmt":"2024-08-04T20:30:33","slug":"fungi","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/fr\/fungi\/","title":{"rendered":"Extraction de polyph\u00e9nols de Camellia oleifera et inhibition de champignons phytopathog\u00e8nes communs"},"content":{"rendered":"

Extraction de polyph\u00e9nols de Camellia oleifera et inhibition de champignons phytopathog\u00e8nes communs
\nCamellia oleifera est un arbuste vivace \u00e0 feuilles persistantes appartenant \u00e0 la famille des Theaceae Mirb et au genre Camellia L.. Le th\u00e9 \u00e0 l'huile contient une grande quantit\u00e9 de substances actives, telles que des polyph\u00e9nols, du squal\u00e8ne, des flavono\u00efdes et des oligo-\u00e9l\u00e9ments. \u00c0 l'heure actuelle, le d\u00e9veloppement et l'utilisation du th\u00e9 \u00e0 l'huile se concentrent principalement sur les graines de th\u00e9 \u00e0 l'huile et l'huile de graines de th\u00e9 \u00e0 l'huile, tandis que les feuilles de th\u00e9 \u00e0 l'huile sont devenues des d\u00e9chets.<\/p>\n

Les polyph\u00e9nols sont des compos\u00e9s dont la structure mol\u00e9culaire comporte plusieurs groupes hydroxyle ph\u00e9noliques et qui sont largement r\u00e9pandus dans les racines, les tiges, les feuilles et les fruits des plantes. Les principaux d\u00e9riv\u00e9s des polyph\u00e9nols sont les cat\u00e9chines, qui contiennent \u00e9galement des acides ph\u00e9noliques, des flavanols et d'autres substances. Les polyph\u00e9nols, en tant que type de m\u00e9tabolite secondaire v\u00e9g\u00e9tal, sont l'une des substances biochimiques importantes permettant aux plantes de r\u00e9sister \u00e0 l'invasion de pathog\u00e8nes. \u00c0 l'heure actuelle, l'activit\u00e9 antibact\u00e9rienne des polyph\u00e9nols du th\u00e9 sur les bact\u00e9ries animales a fait l'objet de nombreuses \u00e9tudes et a \u00e9t\u00e9 largement reconnue. Cependant, la plupart des recherches sur les polyph\u00e9nols de l'huile de th\u00e9 se concentrent uniquement sur l'extraction et la d\u00e9termination de la teneur en polyph\u00e9nols de l'huile de graines de cam\u00e9lia, et il y a un manque relatif de recherche sur leur activit\u00e9 antibact\u00e9rienne. C'est pourquoi cette \u00e9tude a extrait des polyph\u00e9nols de Camellia oleifera et \u00e9tudi\u00e9 leur activit\u00e9 inhibitrice et leur m\u00e9canisme contre les champignons pathog\u00e8nes des plantes, fournissant ainsi une base pour le d\u00e9veloppement de pesticides \u00e0 base de plantes et pour la pr\u00e9vention et le contr\u00f4le \u00e9cologiques des maladies. La recherche est b\u00e9n\u00e9fique pour l'expansion du d\u00e9veloppement global et de l'utilisation des ressources en th\u00e9 ol\u00e9agineux, ainsi que pour l'application des polyph\u00e9nols dans le domaine des biopesticides.<\/p>\n

\"\"\"\"\"\"\"\"\"\"Les r\u00e9sultats exp\u00e9rimentaux de l'extraction des polyph\u00e9nols de Camellia oleifera ont montr\u00e9 que le rapport mat\u00e9riau\/liquide, la concentration d'\u00e9thanol et la dur\u00e9e des ultrasons avaient un impact significatif sur l'extraction des polyph\u00e9nols. L'application de \u03b2 - cyclodextrine peut am\u00e9liorer le taux d'extraction des polyph\u00e9nols. Les conditions optimales pour l'extraction assist\u00e9e des polyph\u00e9nols de Camellia oleifera \u00e0 l'aide de la \u03b2-cyclodextrine sont les suivantes : un rapport solide-liquide de 1:30, une concentration d'\u00e9thanol de 60%, une dur\u00e9e d'ultrasons de 60 minutes et un ajout de \u03b2-cyclodextrine de 0,80g. Dans ces conditions, le taux d'extraction des polyph\u00e9nols est de 22,92%. Ce r\u00e9sultat de recherche peut fournir une base th\u00e9orique et une r\u00e9f\u00e9rence pour l'extraction assist\u00e9e des polyph\u00e9nols de Camellia oleifera en utilisant la \u03b2-cyclodextrine. Cette \u00e9tude indique que les extraits de polyph\u00e9nols peuvent inhiber la croissance, la formation et la germination de spores de champignons phytopathog\u00e8nes communs, modifier la morphologie des hyphes et la couleur des colonies, et changer la perm\u00e9abilit\u00e9 des membranes cellulaires des champignons pathog\u00e8nes. Cela offre une nouvelle option pour le d\u00e9veloppement de m\u00e9dicaments antifongiques et de plantes g\u00e9n\u00e9tiquement modifi\u00e9es r\u00e9sistantes aux maladies.<\/p>","protected":false},"excerpt":{"rendered":"

Extraction of Polyphenols from Camellia oleifera and Its Inhibition on Common Plant Pathogenic Fungi Camellia oleifera is a perennial evergreen shrub belonging to the Theaceae Mirb family and Camellia L. genus. Oil tea contains a large amount of active substances, such as polyphenols, squalene, flavonoids, and trace elements. At present, people’s development and utilization of […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"yoast_head":"\nExtraction of Polyphenols from Camellia oleifera and Its Inhibition on Common Plant Pathogenic Fungi - China Chemical Manufacturer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangextracts.com\/fr\/fungi\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Extraction of Polyphenols from Camellia oleifera and Its Inhibition on Common Plant Pathogenic Fungi - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"Extraction of Polyphenols from Camellia oleifera and Its Inhibition on Common Plant Pathogenic Fungi Camellia oleifera is a perennial evergreen shrub belonging to the Theaceae Mirb family and Camellia L. genus. 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