Antioxidant Properties of Nine Commonly Used Medicinal Plants in Arabs Region (original) (raw)

Abstract

The present study was conducted to investigate the total phenolics, total flavonoid, and Trolox equivalent antioxidant capacity of 9 commonly used medicinal plants and herbs among Arabs nation namely, Trachyspermum ammi (Apiaceae) seeds, Ferula assa-foetida (Apiaceae) dried latex, Elettaria cardamomum (Zingiberaceae) fruit 1, Senna alexandrina (Caesalpinioideae) Leguminosae leaves, Adenium obesum (Apocynaceae) leaves, Elettaria cardamomum (Zingiberaceae) fruit 2, Trigonella foenum-graecum (Leguminosae) seeds, Lepidium sativum (Brassicaceae) seeds, Ziziphus spina-christi (Rhamnaceae) fruit, and Nigella sativa (Ranunculaceae) seeds. The methanol extract of each plant was obtained by dissolving 2g of plant powder in 20 ml methanol-water (4:1v/v) to overnight at room temperature. The supernatants were concentrated by using a rotary evaporator. Residues of each extract were dissolved in distilled water and the final volume was recorded. A serial dilution of 10, 100, 1000, and 5000 were made.

Key takeaways

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  1. Trigonella foenum-graecum exhibited the highest total phenolics at 2171.57 mg GAE/100g.
  2. The study evaluates the antioxidant properties of nine medicinal plants in the Arab region.
  3. T. ammi and S. alexandrina had the highest IC50 values for antioxidant activity at 100.04 and 720.51 µg, respectively.
  4. Total flavonoid content was assessed using aluminum chloride, expressed as mg QE/100g.
  5. Ziziphus spina-christi showed a significant phenolic content of 1644.00 mg GAE/100g, highlighting its potential antioxidant benefits.

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