turmeric (curcuma longa l.) is extensively used as a spice, food preservative and colouring material. it has been used in traditional medicine for various diseases. curcumin, the main yellow bioactive component of turmeric has been shown to have a wide spectrum of biological actions. heretofore, it has been reported that natural colored extracts isolated from turmeric rhizomes with many methods...

O objetivo do trabalho foi avaliar a atividade antioxidante, o teor de compostos fenólicos e flavonoides antibacteriana diferentes extratos semente Eugenia involucrata obtidos por extrações sucessivas em Soxhlet maceração, utilizando os solventes hexano álcool etílico. A antioxidante fundamentada na medida da absorção radical 2,2-difenil-1-picril hidrazil (DPPH•) 515 nm. totais avaliado pelo mé...

Supercritical fluid extraction (SFE), ultrasonic extraction (USE), and accelerated solvent extraction (ASE) were compared with the well known Soxhlet extraction for the extraction of polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins (PCDDs) from the XAD-2 resin which was used to adsorb PCDDs in the atmosphere. XAD-2 resin spiked with five PCDDs was chosen as a sample. The o...

The CEM rapid extraction method for lipid content determination was compared with official standard methods and was found to give accurate results for individual samples, taking approximately 8 min per sample. The study involved the lipid analysis of 47 white muscle samples from six fillets of farmed Atlantic salmon, using both the CEM and the Soxhlet method, in order to evaluate the performanc...

*Correspondence: Peer M. Schenk, Algae Biotechnology Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Level 5, John Hines Building, Brisbane, QLD 4072, Australia e-mail: [email protected] Microalgal lipid recovery for biodiesel production is currently considered suboptimal, but pre-treatment of algal biomass, the use of solvent mixtures and the positioning of ...

Screening by gas chromatography with flame ionization detection and gas chromatography-mass spectrometry has been carried out on sludge extracts of wastewater treatment basins. Soxhlet extraction with trichlorotrifluoroethane was applied. The yields for petroleum hydrocarbons and PAH recovery were high, usually in excess of 90%. The proposed investigations permit a quick assessment of petroleum...

BACKGROUND Studies on selected metabolites profiling of Orthosiphon stamineus extracts using chromatographic and spectroscopic techniques combined with chemometric tools have not been fully elucidated. Thus present study was performed to profile selected metabolites in O. stamineus leaves extracts using HPLC and FTIR combined with chemometric tools and correlated with biological activities. M...

Cereal Chem. 81(6):693–698 Environmental concerns, the disposal cost of hazardous waste, and the time required for extraction in current methods encouraged us to develop an alternate method for analysis of wheat flour lipids. Supercritical fluid extraction (SFE) with carbon dioxide has provided that medium and the method is fully automatic. Crude fats or nonstarch free lipids (FL) were extracte...