Romanian Society of Pharmaceutical Sciences
 

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PHYTOCHEMICAL ANALYSIS, ANTIOXIDANT AND ANTIBACTERIAL ACTIVITIES OF HYPERICUM HUMIFUSUM L. (HYPERICACEAE)

ANCA TOIU1, LAURIAN VLASE2, CRISTINA MANUELA DRĂGOI3*, DAN VODNAR4, ILIOARA ONIGA1

1.Department of Pharmacognosy, Faculty of Pharmacy, “Iuliu Hatieganu” University of Medicine and Pharmacy, 8, V. Babes Street, Cluj-Napoca, Romania
2 .Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, “Iuliu Hatieganu” University of Medicine and Pharmacy, 8, V. Babes Street, Cluj-Napoca, Romania
3 .Department of Biochemistry, Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6, Traian Vuia Street, sector 2, Bucharest, Romania
4 .Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 3-5, Manăştur Street, Cluj-Napoca, Romania

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The study focused on the chemical composition, antioxidant and antibacterial evaluation of Hypericum humifusum aerial parts. Total phenolic content (TPC), total flavonoid content (TFC) and total hypericins (TH) were determined by spectro-photometric methods, and the identification and quantitation of polyphenolic compounds by LC/UV/MS. Ethanolic extracts were the richest in total phenols (8.85%), flavonoids (4.52%) and total hypericins (0.12%). Gentisic, caffeic and chlorogenic acids, hyperoside, isoquercitrin, rutin, quercitrin, and quercetin were identified and quantified by HPLC/UV/MS. The antioxidant potential determined by DPPH assay showed a better antioxidant activity for H. humifusum ethanolic extract and a positive correlation between the antioxidant properties, TPC and TFC. Antimicrobial activity by dilution assays, minimal inhibitory concentration and minimal bactericidal concentration were assessed. H. humifusum aerial parts represent an important alternative source of natural antioxidants and antimicrobials.