Search results for "Calendula"

showing 3 items of 13 documents

Species-Specific Antioxidant Power and Bioactive Properties of the Extracts Obtained from Wild Mediterranean Calendula Spp. (Asteraceae)

2019

In this study we focused on four taxa of the genus Calendula (C. maritima, C. suffruticosa subsp. fulgida, C. arvensis, and the hybrid between the first two ones), collected in Mediterranean area (Sicily). Six extracts for each species were obtained using solvents with increasing polarity (hexane, ethanol 80%, acetone 70%, and water) and through extraction by supercritical fluids (SFE). It has been observed that the solvent with the highest extraction efficiency was ethanol 80% for all species. However, SFE extracts showed high antioxidant activity comparable to the ethanol 80% extract (polyphenol, DPPH, and reducing power method). These findings were confirmed by in vitro analysis (MTT ass…

antioxidantAntioxidantDPPHmedicine.medical_treatmentcalendula specielcsh:Technology01 natural scienceslcsh:Chemistrystresschemistry.chemical_compoundSettore BIO/10 - BiochimicaGeneral Materials ScienceFood scienceSettore BIO/06 - Anatomia Comparata E CitologiaCalendulalcsh:QH301-705.5InstrumentationFluid Flow and Transfer Processes0303 health sciencesbiologyplantsGeneral EngineeringSupercritical fluid extractionlcsh:QC1-999Computer Science ApplicationsSolventantioxidantscalendula speciesopuntia-ficus-indica03 medical and health sciencesmedicineAcetoneby-productspolyphenols030304 developmental biologylcsh:TACLProcess Chemistry and TechnologyExtraction (chemistry)assaybiology.organism_classification0104 chemical sciences010404 medicinal & biomolecular chemistrylcsh:Biology (General)lcsh:QD1-999chemistrylcsh:TA1-2040PolyphenolbioactivitySettore BIO/03 - Botanica Ambientale E Applicataflavonoidsmarigoldsupercritical fluid extraction[SDE.BE]Environmental Sciences/Biodiversity and Ecologylcsh:Engineering (General). Civil engineering (General)lcsh:Physicsphenolic compositionApplied Sciences
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Hybridization and competition between the endangered sea marigold (Calendula maritima, Asteraceae) and a more common congener

2013

Occurrences of hybridization between the rare, endangered Sicilian endemic, Calendula maritima, and other congeners in the wild have been suspected by several authors, but never demonstrated. In San Cusumano (Trapani), one of the only three Sicilian mainland populations, C. maritima occurs in close proximity to the more common congener C. suffruticosa subsp. fulgida, and individuals morphologically intermediate between the two taxa have been observed. In order to determine whether hybridization is occurring at this site, and, if so, begin to assess the impact it could have on C. maritima, two independent tests of hybridity were conducted by studying (1) the pollen morphology and viability a…

biologySettore BIO/02 - Botanica SistematicaCalendula maritimaEndangered speciesIntrogressionPlant ScienceAsteraceaebiology.organism_classificationmedicine.disease_causeatpI–atpH Calendula hybridization ITS pollen morphology pollen viability evolution Mediterranean islands endangered species conservationIntergenic regionCongenerPollenBotanySettore BIO/03 - Botanica Ambientale E ApplicatamedicinebacteriaInternal transcribed spacerEcology Evolution Behavior and Systematics
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HPLC Determination of Polyphenols from Calendula officinalis L. Flowers

2017

Abstract Romanian spontaneous flora provides a lot of resources for the determination of different chemical compounds. This study uses flower samples from Calendula officinalis L. extracted through maceration. The chemical compounds determined were: (+)-catechin, caffeic acid, chlorogenic acid, cinnamic acid, ferulic acid, gallic acid, rutin, resveratrol and quercetin. They were analyzed by using an optimized HPLC method. (+)-Catechin, caffeic acid, chlorogenic acid and quercetin could not be identified in the analyzed samples. The greatest amount of phenolic compound found was rutin and the smallest quantity was determined for ferulic acid. The quantified compounds have proven to have bene…

hplcphenolic compounds01 natural sciencesFood processing and manufactureIndustrial and Manufacturing EngineeringCinnamic acidFerulic acidchemistry.chemical_compoundRutincommon marigoldChlorogenic acidCaffeic acidGallic acidChromatographybiologyfunctional compounds010405 organic chemistryfood and beveragesTP368-456biology.organism_classification0104 chemical sciences010404 medicinal & biomolecular chemistrychemistryCalendula officinalisQuercetinFood ScienceActa Universitatis Cibiniensis. Series E: Food Technology
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