Search results for "Hypericum species"

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Phytochemical profiles, phototoxic and antioxidant properties of eleven Hypericum species - A comparative study

2018

Hypericum is one out of the nine genera belonging to the botanical family Clusiaceae Lindl (syn. Hypericaceae Juss.; APG III, 2009). The genus contains 484 species spread worldwide, one of which, Hypericum perforatum, is largely used in folk medicine. The aim of this study was to evaluate the chemical composition, along with the antioxidant and phototoxic activity, of 11 Hypericum species grown in Sicily (H. perforatum L., H. aegypticum L., H. androsaemum L., H. calycinum L., H. hircinum L., H. hirsutum L., H. montanum L., H. patulum Thunb., H. perfoliatum L., H. pubescens Boiss., H. tetrapterum Fr.). Samples of flowering tops collected from these Hypericum species were extracted and analys…

0106 biological sciencesDPPHHyperforinAntioxidants Hyperforin Hypericin Hypericum species (Clusiaceae Lindl.) Phototoxicity; PolyphenolsPhytochemicalsHypericinFlowersPlant ScienceHorticultureHypericaceae01 natural sciencesBiochemistryAntioxidantsMass SpectrometryPhototoxicityMicechemistry.chemical_compoundPicratesSpecies SpecificityHypericum species (Clusiaceae Lindl.) Phototoxicity Polyphenols Hypericin Hyperforin AntioxidantsAnimalsHypericum species (Clusiaceae Lindl.)Molecular BiologyChromatography High Pressure LiquidbiologyTraditional medicine010405 organic chemistryChemistryBiphenyl CompoundsPolyphenolsHypericum perforatumGeneral MedicineFibroblastsbiology.organism_classificationSettore AGR/02 - Agronomia E Coltivazioni Erbacee0104 chemical sciencesHypericinHyperforinPhotochemotherapyPhytochemicalPolyphenolNIH 3T3 CellsAntioxidantReactive Oxygen SpeciesHypericumHypericumDermatitis Phototoxic010606 plant biology & botany
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Leaf and stem anatomy in eight Hypericum species (Clusiaceae).

2013

Abstract - Foliar micromorphology, epicuticular wax morphology and anatomical features of leaves and stem, particularly secondary xylem, were examined with light microscopy, general and histochemical staining and scanning electron microscopy in eight Hypericum species. Outer tegument tissue and type of secondary xylem are determining characteristics. Secondary xylem is ring-porous in H. perforatum, H. perfoliatum, H. tetrapterum, H. triquetrifolium, H. androsaemum and H. hircinum. In H. aegypticum and H. pubescens xylem is diffuse-porous, which is considered to be a more primitive type. These characteristics may be considered an additional criterion for species identification.

Hypericum speciesbiologyXylemClusiaceaePlant ScienceAnatomyViral tegumentbiology.organism_classificationAnatomy epiderma epicuticular wax Hypericum morphology SEM stem xylemHistochemical stainingepicuticular waxEpicuticular waxepidermaBotanymorphologySEMSpecies identificationxyemstemAnatomyHypericumEcology Evolution Behavior and SystematicsHypericumAnatomy; epiderma; epicuticular wax; Hypericum; morphology; SEM; stem; xylem
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