A5016493892- Essential Oils and Antimicrobial Activity
- Phase Equilibria and Thermodynamics
- Petroleum Processing and Analysis
- biodegradable polymer synthesis and properties
- Hydrocarbon exploration and reservoir analysis
- Enhanced Oil Recovery Techniques
- Protein purification and stability
- Polymer Nanocomposites and Properties
- Analytical Chemistry and Chromatography
- Bee Products Chemical Analysis
- Power Line Communications and Noise
- Polymer Foaming and Composites
- Phytochemicals and Antioxidant Activities
- Electrospun Nanofibers in Biomedical Applications
- Mass Spectrometry Techniques and Applications
- Natural Fiber Reinforced Composites
- Meat and Animal Product Quality
- Free Radicals and Antioxidants
- Enzyme Catalysis and Immobilization
- Plant biochemistry and biosynthesis
- Subcritical and Supercritical Water Processes
- Drug Solubulity and Delivery Systems
- Chemistry and Chemical Engineering
- Clay minerals and soil interactions
- Silicone and Siloxane Chemistry
Universidade Estadual de Campinas (UNICAMP)
2015-2024
Centro Universitário da Cidade
2017-2023
Universidade Federal de Pelotas
2019
San Antonio College
2015
Hospital de Clínicas da Unicamp
2007-2015
University of Coimbra
2015
Fundação Oswaldo Cruz
2014
Agropolis International
2004
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2004
Laboratoire de Chimie
2004
Supercritical fluid extraction (SFE) from aniseed using carbon dioxide was performed at 30 degrees C and pressures of 80-180 bar. The chemical composition the SFE extract determined by GC-MS; quantitative analysis done GC-FID TLC. total amount extractable substances or global yield (mass extract/mass feed) for process varied 3.13 to 10.67% (mass). solubilities anise essential oil in CO(2) were 0.0110, 0.0277, 0.0143, 0.0182 kg solute/kg 80, 100, 140, 180 bar, respectively. major compounds...
The kinetics of supercritical fluid extraction from vegetable raw materials in fixed beds was studied. operational conditions used the ginger oleoresin were pressures 150, 200, and 250 bar, temperatures 20, 30, 40 °C, a solvent flow rate (5.6 ± 0.3) × 10-5 kg/s CO2. A mathematical model obtained differential mass balance bed presented. This considers extract as mixture various groups compounds, classified according to their chemical characteristics. interfacial flux each group compounds...
Numerous plants from have been investigated due to their anti-inflammatory activity and, among then, extracts or components of ginger (Zingiber officinale Roscoe) and rosemary (Rosmarinus officinalis L.), sources polyphenolic compounds. 6-gingerol rhizome carnosic acid carnosol leaves present anti-tumor, antioxidant activities. However, the evaluation mechanisms action these other plant is limited high hydrophobicity. Dimethylsulfoxide (DMSO) commonly used as a vehicle liposoluble materials...
In this study, the extraction kinetics of pink pepper (Schinus terebinthifolius Raddi) using supercritical CO2 were investigated. S. is an important fruit tree that native to Brazil. Owing its medicinal properties, plant demonstrates potential for commercial use. However, date, compounds from SFE has been investigated in few studies, and no reports have found on kinetic models raw material. A design experiments was developed evaluate influences temperature pressure kinetics. The Tan Liou,...
The supercritical fluid extraction of fatty acids and carotenoids from the microalgae Spirulina maxima with carbon dioxide was studied. effects pressure temperature on yield chemical composition extracts were assessed. experiments conducted at temperatures 20−70 °C pressures 15−180 bar. solvent mass flow rate 3.33 × 10-5 kg/s. Statistical analysis showed that neither nor significantly affected total yield, but both rate, effect prevailed over pressure. rich in essential carotenes, 100 bar 45...
The kinetics of supercritical fluid extraction (SFE) clove and vetiver oils using carbon dioxide as solvent was studied, in order to establish an efficient method predict curves on large scale. mass transfer model Sovová used adjust the experimental SFE data, which were obtained at 100 bar 35 °C for 200 40 vetiver, columns different geometry flow rates. Some other process parameters, such bed density porosity, feed ratio velocity kept constant from one experiment another, verify if...
The valorization of extracts from Brazilian vetiver (Vetiveria zizanioides (L.) Nash ex Small) roots was studied. This study took into account the extraction method, chemical composition extracts, their sensorial characteristics, and possibility transformations product. performed methods were hydrodistillation with supercritical carbon dioxide. Some pretreatment tested on evaluated in terms yield, process time, composition, properties. Supercritical dioxide resulted high yield (3.2%)...
Asphaltenes flocculate as a consequence of changes in the temperature, pressure, or composition. This flocculation can result several oil production problems. The application chemical additives (inhibitors dispersants) is well-known way to control asphaltene flocculation. Ultraviolet–visible (UV–vis) spectroscopy most common analytical technique that has been applied study effectiveness keeping particles dispersed into crude oils. However, this requires being performed diluted solutions,...