What is it about?
This study investigates antioxidant activity, flavonoid composition, and cytotoxicity of aqueous and methanolic extracts from Algerian Rhamnus alaternus bark. Antioxidant properties were assessed using multiple redox‑based assays, flavonoids were profiled by HPLC‑DAD‑ESI‑MS, and cytotoxicity was tested in U937 human leukemia cells. Traditional decoction was compared with laboratory preparations.
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Why is it important?
All extracts showed antioxidant activity and similar flavonoid fingerprints, supporting the presence of bioactive compounds in traditional preparations. The methanolic extract contained higher flavonoid levels and showed stronger antioxidant activity together with selective cytotoxicity toward leukemia cells, highlighting the relevance of extraction methods for bioactivity assessment.
Perspectives
Findings are based on in vitro assays and a single cancer cell line, which limits biological generalization. Further work is needed to optimize extraction conditions to enrich anticancer flavonols while minimizing toxicity to normal cells and to explore mechanisms beyond antioxidant capacity.
Prof. Antonio Speciale
University of Messina
Read the Original
This page is a summary of: Flavonoid profile, antioxidant and cytotoxic activity of different extracts from Algerian Rhamnus alaternus L. bark, Pharmacognosy Magazine, January 2015, Medknow,
DOI: 10.4103/0973-1296.157707.
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