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	Provedor de dados Ciênc. Tecnol. Aliment. (1) Rev. Bras. Ciênc. Solo (1) Autor Carvalho,Geila Santos (1) Costa,Telma dos Santos (1) Guilherme,Luiz Roberto Guimarães (1) Mendes,Leandro Antunes (1) Ono,Fábio Benedito (1) Pena,Rosinelson da Silva (1) Rogez,Hervé (1) Mais... Palavra-chave In vitro tests (2) Adsorption (1) Cellulose (1) Environmental pollution (1) Isotherm (1) Phenolic compounds (1) Trace elements (1) Xylan (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2015 (1) 2012 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Adsorption capacity of phenolic compounds onto cellulose and xylan Ciênc. Tecnol. Aliment. Costa,Telma dos Santos; Rogez,Hervé; Pena,Rosinelson da Silva. The interaction between three phenolic compounds (catechin, caffeic acid and ferulic acid) onto two dietary fibres (cellulose and xylan) has been evaluated to inquire possible interferences on the biodisponibility of phenolic compounds. The adsorption kinetics were performed using solutions containing 100 mg/L of phenolic compounds during a contact time ranging between 10 and 120 minutes at pH 2.0, 4.5, and 7.0. After the kinetics, isotherms were obtained using phenolic compounds concentration ranging between 10 and 80 mg/L during 60 minutes, at pH 2.0 and 7.0 and temperature of 36 °C. Results indicate that adsorbed quantities mainly changed in function of pH, however the maximum adsorption was only of 0.978 mg of caffeic acid/g of xylan at pH 2 and after... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cellulose; Xylan; Adsorption; Phenolic compounds; Isotherm; In vitro tests. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000200314 Replication of an ivg protocol to estimate bioaccessible arsenic in materials from a gold mining area in Brazil Rev. Bras. Ciênc. Solo Ono,Fábio Benedito; Guilherme,Luiz Roberto Guimarães; Mendes,Leandro Antunes; Carvalho,Geila Santos. Tests for bioaccessibility are useful in human health risk assessment. No research data with the objective of determining bioaccessible arsenic (As) in areas affected by gold mining and smelting activities have been published so far in Brazil. Samples were collected from four areas: a private natural land reserve of Cerrado; mine tailings; overburden; and refuse from gold smelting of a mining company in Paracatu, Minas Gerais. The total, bioaccessible and Mehlich-1-extractable As levels were determined. Based on the reproducibility and the accuracy/precision of the in vitro gastrointestinal (IVG) determination method of bioaccessible As in the reference material NIST 2710, it was concluded that this procedure is adequate to determine bioaccessible As in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Trace elements; In vitro tests; Environmental pollution. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400029 Registros recuperados: 2 Primeira ... 1 ... Última

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