Encontrados 15 documentos, a visualizar página 1 de 2
Subacute effects of the thiodicarb pesticide on target organs of male wistar ra...
Dias, Elsa; Gomes, Mariana; Domingues, Catarina; Ramalheira, Elmano; Morais, Simone; Pereira, Maria de LourdesThiodicarb, a carbamate pesticide widely used on crops, may pose several environmental and health concerns. This study aimed to explore its toxicological profile on male rats using hematological, biochemical, histopathological, and flow cytometry markers. Exposed animals were dosed daily at 10, 20, or 40 mg/kg/body weight (group A, B, and C, respectively) during 30 d. No significant changes were observed in hem...
Validation of a single-extraction procedure for sequential analysis of vitamin ...
Cruz, Rebeca; Casal, Susana; Mendes, Eulália; Costa, Ana; Santos, Catarina; Morais, SimoneFood lipid major components are usually analyzed by individual methodologies using diverse extractive procedures for each class. A simple and fast extractive procedure was devised for the sequential analysis of vitamin E, cholesterol, fatty acids, and total fat estimation in seafood, reducing analyses time and organic solvent consumption. Several liquid/liquid-based extractive methodologies using chlorinated an...
Determination of ochratoxin A in bread: evaluation of microwave-assisted extrac...
Paíga, Paula; Morais, Simone; Oliva-Teles, Maria Teresa; Correia, Manuela; Delerue-Matos, Cristina; Sousa, Ana M. M.; Gonçalves, Maria PilarAn analytical method using microwave-assisted extraction (MAE) and liquid chromatography (LC) with fluorescence detection (FD) for the determination of ochratoxin A (OTA) in bread samples is described. A 24 orthogonal composite design coupled with response surface methodology was used to study the influence of MAE parameters (extraction time, temperature, solvent volume, and stirring speed) in order to maximize...
Espresso coffee residues in horticultural improvement
Cruz, Rebeca; Morais, Simone; Mendes, Eulália; Pereira, J.A.; Baptista, Paula; Ramalhosa, Elsa; Casal, SusanaSpent coffee grounds are usually disposed as common garbage, without specific reuse strategies. Due to its recognized richness in bioactive compounds, the effect of espresso spent coffee grounds on lettuce´s macro- and micro- elements, as well as on its antioxidant and bioactive compounds, was assessed in order to ascertain its potential applicability in agroindustry, minimizing environmental issues and increas...
Development and Application of Electroanalytical Procedures in In Vitro Cytocom...
Morais, Simone BarreiraDissertation submitted for obtain the degree of Ph.D. in Chemical Engineering, to the Faculty of Engineering of the University of Oporto, under supervision Prof. João Paulo Sousa and Prof. Graça Simões de Carvalho
Analysis of polycyclic aromatic hydrocarbons in fish: optimisation and validati...
Ramalhosa, Maria João; Paíga, Paula; Morais, Simone; Sousa, Ana M. M.; Gonçalves, Maria Pilar; Delerue-Matos, Cristina; Oliveira, M. Beatriz P. P.An accurate and sensitive method for determination of 18 polycyclic aromatic hydrocarbons (PAHs) (16 PAHs considered by USEPA as priority pollutants, dibenzo[a,l]pyrene and benzo[j]fluoranthene) in fish samples was validated. Analysis was performed by microwave-assisted extraction and liquid chromatography with photodiode array and fluorescence detection. Response surface methodology was used to find the optima...
Analyses of the development and glycoproteins present in the ovarian follicles ...
Rocha,Thiago L.; Yamada,Áureo T.; Mazaro e Costa,Renata; Sabóia-Morais,Simone M.T.The morphofunctional aspects of oogenesis of Poecilia vivipara were studied aiming to understand the reproductive biology and development of species with internal fertilization, particularly those belonging to the family Poeciliidae. The stages of gonadal maturation and follicular development were characterized using mesoscopic, histological, histochemical, and lectin cytochemical analyses. Through mesoscopic e...
Estudo das folhas e caule de Hyptidendron canum(Pohl ex Benth.) Harley, Lamiaceae
Fiuza,Tatiana S.; Rezende,Maria H.; Sabóia-Morais,Simone M. T.; Tresvenzol,Leonice M. F.; Ferreira,Heleno D.; Paula,José R.Hyptidendron canum (Pohl ex Benth.) Harley, Lamiaceae, é utilizada popularmente como antimalárica, antiinflamatória, antiulcerativa, anti-hepatotóxica e anticancerígena. O objetivo deste trabalho foi realizar o estudo morfo-anatômico das folhas e caules e identificar as principais classes de metabólitos secundários presentes nas folhas de H. canum, dados ainda não descritos na literatura. As folhas e caules jov...
Analysis of polycyclic aromatic hydrocarbons in atmospheric particulate samples...
Castro, Dionísia; Slezakova, Klara; Oliva-Teles, Maria Teresa; Delerue-Matos, Cristina; Alvim-Ferraz, Maria da Conceição M.; Morais, SimoneA methodology based on microwave-assisted extraction (MAE) and LC with fluorescence detection (FLD) was investigated for the efficient determination of 15 polycyclic aromatic hydrocarbons (PAHs) regarded as priority pollutants by the US Environmental Protection Agency and dibenzo(a,l)pyrene in atmospheric particulate samples. PAHs were successfully extracted from real outdoor particulate matter (PM) samples wit...
Analysis of polycyclic aromatic hydrocarbons in fish: evaluation of a quick, ea...
Ramalhosa, Maria João; Paíga, Paula; Morais, Simone; Delerue-Matos, Cristina; Oliveira, M. Beatriz P. P.QuEChERS method was evaluated for extraction of 16 PAHs from fish samples. For a selective measurement of the compounds, extracts were analysed by LC with fluorescence detection. The overall analytical procedure was validated by systematic recovery experiments at three levels and by using the standard reference material SRM 2977 (mussel tissue). The targeted contaminants, except naphthalene and acenaphthene, we...
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