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Chemical composition and antifungal activity of propolis on Aspergillus flavus. Repositório Alice
LORINI, A.; WOBETO, C.; BONALDO, S. M.; BOTELHO, S. de C. C.; SINHORIN, A. P..
Research has indicated the antifungal activity of ethanol extracts from propolis (EEP) on fungi of the genera Phakopsora, Colletotrichum, and Cercospora. Here, chemical compositions and antioxidant activity of three EEP (propolis from Scaptotrigona polysticta stingless bee and two types produced by Apis mellifera - red and brown) were evaluated and their action against Aspergillus flavus was investigated. Ash, dry extract, total phenolic and total flavonoid contents were determined. Phenolic composition was evaluated by high performance liquid chromatography, with using the following reference substances: gallic acid, caffeic acid, ρ-coumaric acid, ferulic acid, quercetin, kaempferol, and apigenin. Tests on mycelial growth, sporulation, and...
Tipo: Artigo de periódico Palavras-chave: Apis melífera; Phenolic; Fungitoxicity; Scaptotrigona polysticta; Composição Química; Aspergillus Flavus.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098965
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Compatibility of Beauveria bassiana with acaricides Neotropical Entomology
Oliveira,Renato C. de; Neves,Pedro M.O.J..
The in vitro compatibility of the entomopathogenic fungus Beauveria bassiana (Bals.) Vuil. with 12 acaricide formulations was evaluated. The active ingredients Clorfenapyr, Fenpyroximate, Amitraz, Acrinathrin, Hexythiazox, Abamectin, Pyridine, Dimethoate, Pyridaphethion, Fenbutatin Oxide, Azocyclotin and Cyhexatin were tested in three different concentrations (mean concentration - MC, half MC and twice the MC). The formulations tested affected conidial germination, vegetative growth and sporulation of the fungus in different levels. The formulations more compatible with B. bassiana were Avermectin and the pyrethroids. The acaricides belonging to the organophosphate and organostanic chemical groups, however, drastically affected conidial germination as well...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Selectivity; Fungitoxicity; Entomopathogenic fungus; IPM.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000300013
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Identification of the major fungitoxic component of cinnamon bark oil Trop. Plant Pathol.
Jham,Gulab N.; Dhingra,Onkar D.; Jardim,Carolina M.; Valente,Vânia M. M..
The study was done to identify the most active fungitoxic component of cinnamon bark (Cinnamomum zeylanicum) oil that can be used as a marker for standardization of cinnamon extract or oil based natural preservative of stored seeds. Aspergillus flavus and A. ruber were used as test fungi. The hexane extracted crude oil and the hydro-distilled essential oil from cinnamon bark had complete growth inhibition concentration (CGIC) of 300 and 100 µl/l, respectively. Both oils produced three fractions on preparative thin layer silica-gel chromatography plates. The fraction-2 of either oil was the largest and most active, with CGIC of 200 µl/l, but the fungitoxicity was also retained in the other two fractions. The fraction-1 and 3 of the crude oil reduced growth...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Essential oils; Antifungal activity; Fungitoxicity; Active compounds; Cinnamon oil; Seed preservative.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000400011
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