A5037078362- Mercury impact and mitigation studies
- Infant Nutrition and Health
- Analytical chemistry methods development
- Heavy Metals in Plants
- Heavy metals in environment
- Child Nutrition and Water Access
- Heavy Metal Exposure and Toxicity
- Iron Metabolism and Disorders
- Advanced Chemical Sensor Technologies
- Coconut Research and Applications
- Breastfeeding Practices and Influences
- Clinical Nutrition and Gastroenterology
- Milk Quality and Mastitis in Dairy Cows
- Trace Elements in Health
- Plant Micronutrient Interactions and Effects
- Food Chemistry and Fat Analysis
- Potassium and Related Disorders
- Animal Diversity and Health Studies
- Xenotransplantation and immune response
- Microbial Metabolites in Food Biotechnology
- Analytical Chemistry and Chromatography
- Natural Products and Biological Research
- Sugarcane Cultivation and Processing
- Spectroscopy and Chemometric Analyses
- Business and Management Studies
Universidade Federal Fluminense
2020-2025
Universidade Estadual de Campinas (UNICAMP)
2011-2025
Universidad de Oviedo
2017-2019
Secretaria Municipal de Saúde
2016
Brazilian Agricultural Research Corporation
1993
Cadmium (Cd) and lead (Pb) concentrations their relationship to the cocoa content of chocolates commercialized in Brazil were evaluated by graphite furnace atomic absorption spectrometry (GF AAS) after microwave-assisted acid digestion. Several chemical modifiers tested during method development, analytical parameters, including limits detection quantification as well accuracy precision overall procedure, assessed. The study examined 30 chocolate samples, Cd Pb range <1.7–107.6 <21–138.4...
Total contents and bioaccessible fractions of Ca, K, Mg, Na, P Zn in bovine milk soy-based were determined to investigate if this plant-based beverage could be an adequate substitute with relation the ingestion these essential elements. The quantification elements was made by inductively coupled plasma optical emission spectrometry (ICP OES) their bioaccessibilities evaluated vitro simulation human gastrointestinal digestion. minerals similar among samples, whereas concentrations beverages...
Methylmercury (MeHg+) is a mercury species that very toxic for humans, and its monitoring sorption from environmental samples of water are public health concern. In this work, combination theory experiment was used to rationally synthesize an ion-imprinted polymer (IIP) with the aim extraction MeHg+ water. Interactions among possible reaction components in pre-polymerization stage were studied by computational simulation using density functional theory. Accordingly, 2-mercaptobenzimidazole...
As frações bioacessíveis de Al, Ba, Cd, Cr, Cu, Mg, Mn e P em amostras achocolatado foram estimadas usando um método digestão in vitro técnicas espectrométricas análise.Como foi utilizado procedimento três etapas, nas quais são simulados os processos digestivos que ocorrem na boca, no estômago intestino com a preparação fluidos sintéticos.Para o tratamento da amostra do quimo (porção solúvel) obtido vitro, utilizou-se mineralização assistida por radiação micro-ondas, considerando altos...
In this work multivariate experiments were conducted to optimize the operating conditions for inductively coupled plasma optical emission spectrometry (ICP OES) multielemental determinations in chocolate drink powder. The investigated using a 23 central composite design, where variables studied radio frequency power, nebulization flow rate, and auxiliary argon rate. effects of these parameters on robustness signal background ratio (SBR) considered parallel, allowing evaluation detectability...
The contents of essential (Ca, Fe, K, Na, P, and Zn) potentially toxic inorganic elements (As, Al, Cd, Cr, Cu, Mn, Pb) in enteral parenteral nutrition formulas administered to individuals critical health conditions were evaluated. analyses conducted by inductively coupled plasma optical emission spectrometry (ICP OES) graphite furnace atomic absorption (GFAAS). A total 30 formulas, 23 solution components, 3 solutions analyzed. validated analytical methods presented an accuracy 75-116% RSD...
An evaluation of the exposition cadmium and chromium via chocolate drink powder consumption was conducted. The element levels were determined in 34 samples several types (traditional, light, diet, organic) available Brazilian market. previously treated using acid mineralisation assisted by microwave radiation analysed graphite furnace atomic absorption spectrometry. Concentrations Cd range 14-124 81-4790 µg kg-1 for Cr. contributions daily children would represent 4-35% provisional tolerable...
To determine and compare the concentrations of electrolytes minerals in three different types maternal milk samples: term donor before pasteurization, after pasteurization raw mothers preterm newborns at bedside.Descriptive cross-sectional study. Concentrations calcium (Ca), phosphorous (P), magnesium (Mg), sodium (Na) potassium (K) were measured random samples human breast groups. Samples analyzed using acid mineralization assisted by microwave radiation further analysis inductively coupled...
For the first time, study of iron metabolism and bioavailability, administered as stable isotope enriched nanoparticles, was carried out by speciation analysis.
Abstract Iron fortification in infant formulas is a common practice for providing iron to newborns order avoid its deficiency (anemia). Depending on the physicochemical species used, bioavailability might be insufficient meet requirements. In this vein, influence of Lactoferrin (Lf) presence 2‐week‐old wistar rats fed with formula milk fortified 57 Fe(III) 2 ‐Lf or Fe(II)SO 4 (in Lf) using quantitative speciation (by HPLC‐ICP‐MS) and Isotope Pattern Deconvolution (IPD) studied here. Results...
The Brazilian regulations for processed coconut water establish the range concentrations of Na and K, being necessary high-throughput analytical methods, as microwave-induced plasma optical emission spectrometry (MIP OES) quality control. Samples natural (green mature) were treated by acid decomposition assisted microwave radiation before their MIP OES analysis. Recoveries K 103 95%, whereas relative standard deviation (RSDs) 7.6 1.3%, respectively. limit detection (LOD) was 1.77 mg kg-1...