title: The Phenolics of the Ornithogalum umbellatum L. (Hyacinthaceae): Phytochemical and Ecological Characterization.
abstract: Ornithogalum umbellatum L. is a widely distributed species in Europe, that exhibits considerable variability at ecological, morphological, anatomical, and karyological level. Previous reports of the chemical investigations among Ornithogalum species indicate significant diversity of the secondary metabolites, as well. Knowing that environment affects the phenolic composition in plants to a large extent, the main objective of the research was to define relationship between phytochemical and ecological characters. To estimate an environmental influence on these results, plant material was collected at four habitats that differ in ecological factors and belong to two biogeographical regions: the Balkan Peninsula and the Pannonian Plane. Measured phytochemical characters are yield of dry extract, total phenolic and flavonoid contents, the presence of selected phenolic compounds as well as free-radical scavenging activity (neutralization of DPPH and OH radicals). Results revealed that all analyzed phytochemical parameters differ between investigated O. umbellatum samples. The moisture level of habitat has the highest correlation, either positive or negative, with most of phytochemical characters, and is followed by temperature and soil reaction. Light intensity and nitrogen level have mostly moderate correlation coefficient with phytochemical characters. More complex correlation is revealed between ecological factors and nine phenolic compounds, with three observed patterns of relationship.
authors.affiliation: University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Trg Dositeja Obradovica 2, RS-21000, Novi Sad.
authors.forename: Milica M
authors.initials: MM
authors.lastname: Rat
authors.affiliation: University of Novi Sad, Faculty of Medicine, Department of Pharmacy, Hajduk Veljkova 3, RS-21000, Novi Sad.
authors.forename: Neda S
authors.initials: NS
authors.lastname: Gavaric
authors.affiliation: University of Novi Sad, Faculty of Medicine, Department of Pharmacy, Hajduk Veljkova 3, RS-21000, Novi Sad.
authors.forename: Nebojsa V
authors.initials: NV
authors.lastname: Kladar
authors.affiliation: University of Novi Sad, BioSense Institute, Dr. Zorana Djindjica 1, RS-21000, Novi Sad.
authors.forename: Andrijana M
authors.initials: AM
authors.lastname: Andric
authors.affiliation: University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Trg Dositeja Obradovica 2, RS-21000, Novi Sad.
authors.forename: Goran T
authors.initials: GT
authors.lastname: Anackov
authors.affiliation: University of Novi Sad, Faculty of Medicine, Department of Pharmacy, Hajduk Veljkova 3, RS-21000, Novi Sad.
authors.forename: Biljana N
authors.initials: BN
authors.lastname: Bozin
mesh_terms: D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D000070357:Asparagaceae / Q000737:chemistry*; D017665:Hydroxyl Radical / Q000037:antagonists & inhibitors*; D008027:Light; D009584:Nitrogen / Q000737:chemistry; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D064209:Phytochemicals / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D064210:Secondary Metabolism; D013696:Temperature; D017155:Wettability
chemical_list: D000975:Antioxidants; D010636:Phenols; D064209:Phytochemicals; D017665:Hydroxyl Radical; D009584:Nitrogen
keywords: 
  Ornithogalum
  ; Ecological Characterization; Habitat; Phytochemical characters