A5076285516- Biochemical Analysis and Sensing Techniques
- Carcinogens and Genotoxicity Assessment
- Effects and risks of endocrine disrupting chemicals
- Dye analysis and toxicity
- Coffee research and impacts
- Electrochemical sensors and biosensors
- Toxic Organic Pollutants Impact
- Advanced Chemical Sensor Technologies
- Food Chemistry and Fat Analysis
- Plant biochemistry and biosynthesis
- Analytical Chemistry and Chromatography
Universidade Estadual de Santa Cruz
2022-2024
In this study, the levels of polycyclic aromatic compounds (PACs), such as hydrocarbons (PAHs) and their oxygenated derivatives (oxy-PAHs) were investigated in guarana seeds (Paullinia cupana) subjected to different drying methodologies. An innovative extraction method combined with a miniaturized dispersive solid-phase cleanup procedure was developed for determination PACs concentration. Thirteen-eight seed samples three methodologies (sun drying, greenhouse alguidar furnace drying)...
Guarana seeds are typically processed using one of three drying methods: traditional sun exposure, greenhouse drying, or the alguidar oven technique. In our research, we evaluated contents methylxanthines and flavan‐3‐ols in sun‐ ‐dried guarana from Bahia State’s Low Sul Identity Territory. Caffeine, theobromine, catechin, epicatechin were determined by high‐performance liquid chromatography with UV‐visible detection (HPLC/UV‐vis). Statistical tools, including analysis variance (ANOVA),...
A simple analytical procedure is proposed for the direct analysis of guarana-based beverages in order to determine nutrient elements by inductively coupled plasma optical emission spectrometry (ICP OES). Box-Behnken design, combined with Derringer’s desirability function, was applied simultaneous optimization ICP OES radiofrequency (RF), sample volume and nitric acid concentration. Using this approach, optimal conditions were established as RF power 1.40 kW, 5.0 mL diluted twice 0.5 mol L-1...