8 documents found, page 1 of 1
Trypanocidal activity of Brazilian plants against epimastigote forms from Y and...
Alves,Renata Tomé; Regasini,Luis Octávio; Funari,Cristiano Soleo; Young,Maria Cláudia Marx; Rimoldi,Aline; Bolzani,Vanderlan da SilvaChagas disease is one of the main public health problems in Latin America. Since the available treatments for this disease are not effective in providing cure, the screening of potential antiprotozoal agents is essential, mainly of those obtained from natural sources. This study aimed to provide an evaluation of the trypanocidal activity of 92 ethanol extracts from species belonging to the families Annonaceae, ...
Potencial antifúngico de extratos de plantas e de basidiomicetos nativos sobre ...
Domingues,Ricardo José; Young,Maria Cláudia Marx; Töfoli,Jesus Guerino; Matheus,Dácio RobertoO emprego de fungicidas na agricultura, principalmente quando utilizados de forma inadequada, tem provocado danos tanto ao homem como ao ambiente. O presente trabalho teve por objetivo o estudo in vitro da eficácia de extratos de três plantas e de dois basidiomicetos nativos do Brasil no controle dos fungos Alternaria solani e Colletotrichum acutatum, causadores de graves prejuízos às culturas de tomate e moran...
Antifungal activity of Piper diospyrifolium Kunth (Piperaceae) essential oil
Vieira,Silvia Cristina Heredia; Paulo,Luis Fernando de; Svidzinski,Terezinha Inez Estivaleti; Dias Filho,Benedito Prado; Nakamura,Celso VataruIn vitro activity of the essential oil from Piper diospyrifolium leaves was tested using disk diffusion techniques. The antifungal assay showed significant potencial antifungal activity: the oil was effective against several clinical fungal strains. The majority compounds in the essential oil were identified as sesquiterpenoids by GC-MS and GC-FID techniques.
Chemical composition, acetylcholinesterase inhibitory and antifungal activities...
Cardoso-Lopes,Elaine Monteiro; Paula,Daisy Maria Bentes de; Barbo,Fausto Erritto; Souza,Amanda de; Blatt,Cecília Terumi TeradairaPera glabrata (Schott) Baill. was selected for this study after showing a preliminary positive result in a screening of Atlantic Forest plant species in the search for acetylcholinesterase inhibitors and antifungal compounds. The bioassays were conducted with crude ethanol extract of the leaves using direct bioautography method for acetylcholinesterase and antifungal activities. This extract was partitioned wit...
Constituintes químicos das flores de Pterogyne nitens (Caesalpinioideae)
Regasini,Luis Octávio; Fernandes,Daniara Cristina; Castro-Gamboa,Ian; Silva,Dulce Helena Siqueira; Furlan,Maysa; Bolzani,Vanderlan da SilvaThe phytochemical investigation of the flowers of Pterogyne nitens (Caesalpinioideae) resulted in the isolation and identification of nine phenolic derivatives, quercetin 3-O-sophoroside, taxifolin, astilbin, ourateacatechin, caffeic, ferulic, sinapic, chlorogenic and gallic acid, besides two guanidine alkaloids, pterogynine, pterogynidine. This is the first time these compounds have been reported in P. nitens ...
Essential oil composition of fruit colour varieties of Eugenia brasiliensis Lam.
Moreno,Paulo Roberto H.; Lima,Marcos Enoque Leite; Sobral,Marcos; Young,Maria Cláudia Marx; Cordeiro,Inês; Apel,Miriam Anders; Limberger,Renata PereiraEugenia brasiliensis Lam. is a variable species concerning fruit colour, with three recognized varieties. However, the definition of varieties is not easy for Myrtaceae species and not widely accepted. Two fruit colour varieties (purple and yellow) of E. brasiliensis had their essential oil composition analysed in order to give support to the existence of varieties for this species. Although, the major componen...
Aspectos químicos, biológicos e etnofarmacológicos do gênero Cassia
Viegas Junior,Cláudio; Rezende,Amanda de; Silva,Dulce Helena Siqueira; Castro-Gambôa,Ian; Bolzani,Vanderlan da Silva; Barreiro,Eliezer J.Species of Cassia are widely distributed in tropical and subtropical regions throughout the world, and have been extensively investigated chemically and pharmacologically.They are known to be a rich source of phenolic derivatives, most of them with important biological and pharmacological properties. Some Asian, African and Indian tribes use these species as a laxative, purgative, antimicrobial, antipyretic, an...
Saponinas triterpênicas de Tocoyena brasiliensis Mart. (Rubiaceae)
Hamerski,Lidilhone; Carbonezi,Carlos Alberto; Cavalheiro,Alberto José; Bolzani,Vanderlan da Silva; Young,Maria Cláudia MarxThe present communication reports the isolation and identification of four triterpenoid saponins from the chloroform extract of the leaves of Tocoyena brasiliensis: 3-O-beta-D-quinovopyranosyl quinovic acid, 3-O-beta-D-quinovopyranosyl cincholic acid, 3-O-beta-D-glucopyranosyl quinovic acid and the 28-O-beta-D-glucopyranosyl ester derivative of quinovic acid as binary mixtures, respectively. From the ethanol ex...