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	Provedor de dados Anais da ABC (AABC) (1) BJM (1) Autor Al-Taweel,Areej M. (1) Al-Youssef,Hanan M. (1) Amina,Musarat (1) Amna,Touseef (1) Dieguez,Lídia C. (1) Guimarães,André L. (1) Puri,S.C. (1) Qazi,G. N. (1) Schmal,Martin (1) Sharma,P.R. (1) Mais... Palavra-chave Precursors (2) Camptothecin (1) Cancer (1) Cerium oxide (1) Characterization (1) Entrophospora infrequens (1) Nothapodytes foetida (1) Palladium (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2012 (1) 2004 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última The effect of precursors salts on surface state of Pd/Al2O3 and Pd/CeO2/Al2O3 catalysts Anais da ABC (AABC) Guimarães,André L.; Dieguez,Lídia C.; Schmal,Martin. The influence of the precursors on the promoting effect of ceria on Pd/Al2O3 catalyst, when ceria is coated over alumina was studied. The reaction of propane oxidation proceeded under different feed conditions and the surface active sites were characterized by X-ray photoelectron spectroscopy (XPS) and in situ diffuse reflectance spectroscopy (DRS). XPS and DRS results show that PdO/Pd0 interface are the active sites independent of the precursor, while the catalysts containing CeO2 showed formation of palladium species in the highest oxidation state, probably PdO2 (338 eV) after the oxidation of propane. Besides, the O/Al and O/Ce ratios evidenced the increase of oxygen storage in the presence of CeO2. In addition, the precursor acetylacetonate favors the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Palladium; Cerium oxide; Precursors; Characterization. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000400014 Effect of precursors feeding and media manipulation on production of novel anticancer pro-drug camptothecin from endophytic fungus BJM Amna,Touseef; Amina,Musarat; Sharma,P.R.; Puri,S.C.; Al-Youssef,Hanan M.; Al-Taweel,Areej M.; Qazi,G. N.. We have established methodology for the isolation and characterization of a novel endophytic fungus from the inner bark of medicinal plant Nothapodytes foetida, which produced camptothecin in Sabouraud broth (SB) under shake flask conditions. Camptothecin and its related compounds are at present obtained by extraction from intact plants, but fungal endopytes may be an alternative source of production. In present study we have observed the effect of different nutrient combinations and precursors (tryptophan, tryptamine, geraniol, citral, mevalonic acid and leucine) on the accumulation of camptothecin by endophytic fungus Entrophospora infrequens. The precursors were fed either alone or in combinations (tryptophan and geraniol, tryptophan and citral,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Camptothecin; Entrophospora infrequens; Cancer; Nothapodytes foetida; Precursors. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400032 Registros recuperados: 2 Primeira ... 1 ... Última

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