Search results for " Supercritical fluids"

showing 2 items of 2 documents

Use of supercritical CO2 and N2 as dissolved gases for the atomization of ethanol and water

2012

Supercritical dissolved gas atomization (SDGA) is an atomization process in which a gas at temperatures and pressures above the critical point is used as the atomizing medium. The concept of SDGA has been applied mainly using CO 2 as atomizing gas in various processes developed for the production of fine particles of pharmaceuticals, polymers, and chemical products and for the atomization of fuels. In this work, SDGA, using ethanol and water as the liquids to be atomized, has been experimentally studied. The spray characteristics, in terms of droplet size and distribution, have been investigated using a laser diffraction analyzer. Ethanol has been chosen due to the large miscibility with CO…

Spray characteristicsGeneral Chemical EngineeringAnalytical chemistryMiscibilityLaser diffractionIndustrial and Manufacturing EngineeringPhysics::Fluid DynamicsGas to liquidschemistry.chemical_compoundAtomizing gas Dissolved gas Droplet sizes Fine particles Gas to liquids Laser diffraction Supercritical fluids Supercritical CO2Fine particlesCritical point (thermodynamics)Gas to liquidsPhysics::Atomic and Molecular ClustersChemical Engineering (all)Physics::Atomic PhysicsDissolved gasCondensed Matter::Quantum Gaseschemistry.chemical_classificationAtomizing gasSupercritical fluidsChemistry (all)Droplet sizesGeneral ChemistryPolymerSupercritical CO2Supercritical fluidCondensed Matter::Soft Condensed MatterSolventchemistryCarbon dioxide
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Stability and extraction of bioactive sulfur compounds from Allium genus processed by traditional and innovative technologies

2017

Abstract Since ancient times, species from the Allium genus have been used in both culinary and medicinal applications. The health promoting properties, with well documented “evidence-based” studies, were attributed to the genus’ high content of bioactive organosulfur compounds. For these reasons, the organosulfur compounds have attracted interest in both food and pharmaceutical industries to be used as additives or supplements. Therefore, improvement in the extraction and stability during processing and storage of these molecules is crucial. The presented review documents the effects of traditional and innovative processing techniques on the extraction and stability of organosulfur compoun…

biologyChemistry010401 analytical chemistryExtraction (chemistry)chemistry.chemical_element04 agricultural and veterinary sciencesbiology.organism_classification040401 food science01 natural sciencesSulfur0104 chemical sciencesWhole systems0404 agricultural biotechnologyEnzymatic hydrolysisAllium ; Bioactive sulfur compounds ; Thermal processing ; High pressure processing ; Ultrasound ; Microwaves ; Supercritical fluids ; Food analysis ; Food compositionOrganic chemistryAlliumOrganosulfur compoundsFood ScienceJournal of Food Composition and Analysis
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