Antioxidant activities of the essential oils and extracts of Biebersteinia multifida DC

HAMZEH AMIRI

Abstract

In present study the essential oils composition and antioxidant activities of the essential oils as well as methanolic extracts of leaves, fruits and roots of Biebersteinia multifida were evaluated. The GC-MS analysis of the essential oils resulted in the identification of 36 compounds. Thymol (16.5–38.4%), β-caryophyllene (9.8–15.5%), 1,8-cineol (5.8–18.4%), α-pinene (0.9–14.3%) and β-pinene (2.3–12.4%) were the main components. The samples were subjected to screening for their possible antioxidant activity by using DPPH and β-carotene-linoleic acid assay. In the first case, the radical scavenging activity of the essential oil and methanolic extract of fruits were superior to all other essential oils and extracts (IC50=16.7). In the case of the linoleic acid system, oxidation of the linoleic acid was effectively inhibited by essential oils and extracts of different parts. The fruit extracts showed 95.4±2.15% inhibition, which is comparible to synthetic antioxidant BHT, curcumine and ascorbic acid. Key words: Biebersteinia multifida, essential oil, methanolic extract, antioxidant activity
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