0000000000969946

AUTHOR

Mariarosa Scognamiglio

showing 4 related works from this author

Antioxidant phenolic compounds recovery from Mangifera indica L. by-products by supercritical antisolvent extraction

2015

Abstract Supercritical Antisolvent Extraction (SAE) was used in the recovery of antioxidant compounds from mango by-products. The antioxidant extract was obtained by solid–liquid extraction using aqueous acetone (80% v/v) and subsequent adsorption/desorption in C18 cartridge. Recovery of antioxidants was performed by SAE using SC-CO 2 as antisolvent. The temperature and pressure parameters were varied in the range 35–45 °C and 8–15 MPa. The SAE process allowed the recovery of about 90% of the initial phenolic compounds, the best recovery was obtained at 40 °C and 10 MPa and the main compounds were mangiferin, isomangiferin, quercetin 3-O-galactoside, quercetin 3-O-glucoside, quercetin 3-O-x…

PolyphenolSupercritical Antisolvent ExtractionAntioxidants; Mangiferin; Mango by-products; Nanoparticles; Polyphenols; Supercritical Antisolvent Extraction; Food ScienceAntioxidantDPPHmedicine.medical_treatmentSettore ING-IND/25 - Impianti ChimicimangiferinAntioxidantschemistry.chemical_compoundMango by-productNanoparticlesupercritical antisolvent extractionmedicineMangiferinpolyphenolsmango byChromatographyChemistryExtraction (chemistry)PolyphenolsSupercritical fluidproductsantioxidantsPolyphenolMangiferinNanoparticlesnanoparticlesMango by-productsAntioxidantKaempferolQuercetinFood Science
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Nimesulide adsorbed on silica aerogel using supercritical carbon dioxide

2012

Silica aerogel (SA) was loaded with nimesulide, a drug model compound, to demonstrate the potentiality of adsorption processes based on the usage of supercritical carbon dioxide to treat poorly water-soluble drugs, forming new kinds of drug delivery systems. Adsorption isotherms and kinetics were measured and described by models. The effect of pressure, temperature and solution concentration on loaded SA were also studied. Modelling of kinetic data showed that the sorption process was best described by a pseudo-second-order model. The adsorption isotherm data were best fitted by the Freundlich isotherm. The drug/SA composites were characterized using scanning electron microscopy, X-ray micr…

Materials scienceSupercritical carbon dioxideSilica aerogelSettore ING-IND/25 - Impianti ChimiciGeneral Chemical EngineeringDrug delivery systemChemistry (all)KineticsSorptionAerogelGeneral ChemistryAdsorptionAdsorption mechanismChemical engineeringDrug deliverymedicineOrganic chemistryChemical Engineering (all)Freundlich equationAdsorptionNimesulideNimesulidemedicine.drugChemical Engineering Research and Design
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Headspace Volatile Composition of the Flowers of Caralluma europaea N.E.Br. (Apocynaceae)

2009

The volatile constituents of the flowers of Caralluma (Apteranthes) europaea (Guss.) N.E. Br. (Apocynaceae - Asclepiadoideae) from Lampedusa Island were analyzed by headspace method. The analyses allowed the identification and quantification of 41 compounds. The main components were, among the monoterpenoids, terpinolene (23.3%), a-terpinene (19.1%) and linalool (18.4%), whereas, among the carbonylic compounds the major constituents were heptanal (2.0%), octanoic acid (2.4%) and hexanoic acid (1.7%). It is worth to mention the presence of a nitrogen containing compound, indole (0.8%) and of a sulphur containing compound, dimethylsulphide (t). The compounds found in the flowers of C. europea…

IndolespollinationPharmaceutical ScienceHymenopteraAnalytical Chemistrychemistry.chemical_compoundLinaloolDrug Discovery<em>Caralluma europaea</em>; <em>Apteranthes europaea</em>; Diptera; pollination; sapromyiophily; volatilesHexanoic acidchemistry.chemical_classificationApocynaceaevolatilesChemistry (miscellaneous)Molecular MedicineComposition (visual arts)CaprylatesSettore BIO/07 - EcologiaChromatography GasAcyclic MonoterpenesCyclohexane MonoterpenesFlowersBiologySulfidesArticleSettore CHIM/12 - Chimica Dell'Ambiente E Dei Beni CulturaliLepidoptera genitalialcsh:QD241-441lcsh:Organic chemistryBotanyOrganic matterPhysical and Theoretical ChemistryCaproatesCaralluma europaea; Apteranthes europaea; Diptera; pollination; sapromyiophily; volatilesAldehydesVolatile Organic CompoundsPlant ExtractsTerpenesDipteraOrganic ChemistrySettore CHIM/06 - Chimica Organicabiology.organism_classificationApocynaceaechemistryOdorsapromyiophilyCaralluma europaeaSettore BIO/03 - Botanica Ambientale E ApplicataMonoterpenesApteranthes europaea
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Supercritical Antisolvent Extraction of Bioactive Compounds from Mango by-Products

2013

supercritical fluids extraction bio-compoundSettore ING-IND/25 - Impianti Chimici
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