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Antioxidants 2014, 3(2), 278-287; doi:10.3390/antiox3020278
Article

Antioxidant and Free Radical Scavenging Capacity of Seed and Shell Essential Oils Extracted from Abrus precatorius (L)

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Received: 10 January 2014; in revised form: 28 February 2014 / Accepted: 21 March 2014 / Published: 15 April 2014
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Abstract: Essential oils from plants have been proven safe as natural antioxidants, and few are already marketed as digestive enhancers as well as in prevention of several degenerative diseases. This study evaluated the antioxidant capacity of seed and shell essential oils of Abrus precatorius (L), a herb used for ethno-medicinal practices in Nigeria. The essential oils were obtained by hydro-distillation. The ability of the oils to act as hydrogen/electrons donor or scavenger of radicals were determined by in-vitro antioxidant assays using 2,2-diphenyl-2-picryl-hydrazyl free radical (DPPH.) scavenging; 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical scavenging; lipid peroxide and nitric oxide radicals scavenging assays. The IC50 of the seed and shell oils (2.10 mg/mL and 1.20 mg/mL respectively) showed that antioxidant activity is higher than that for the standard drugs (3.20 mg/mL and 3.40 mg/mL) for the nitric oxide scavenging assay. The lipid peroxidation radical activity of the oils were similar to vitamin C, weak DPPH and ABTS radical scavenging activities were discovered in comparison to vitamin C and rutin. Generally, in the four antioxidant assays, a significant correlation existed between concentrations of the oils and percentage inhibition of free radicals and lipid peroxidation. The composition of A. precatorius essential oils reported earlier may account for their antioxidant capacity.
Keywords: Abrus precatorius; essential oils; DPPH; ABTS; lipid peroxidation; nitric oxide Abrus precatorius; essential oils; DPPH; ABTS; lipid peroxidation; nitric oxide
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Okoh, S.O.; Asekun, O.T.; Familoni, O.B.; Afolayan, A.J. Antioxidant and Free Radical Scavenging Capacity of Seed and Shell Essential Oils Extracted from Abrus precatorius (L). Antioxidants 2014, 3, 278-287.

AMA Style

Okoh SO, Asekun OT, Familoni OB, Afolayan AJ. Antioxidant and Free Radical Scavenging Capacity of Seed and Shell Essential Oils Extracted from Abrus precatorius (L). Antioxidants. 2014; 3(2):278-287.

Chicago/Turabian Style

Okoh, Sunday O.; Asekun, Olayinka T.; Familoni, Oluwole B.; Afolayan, Anthony J. 2014. "Antioxidant and Free Radical Scavenging Capacity of Seed and Shell Essential Oils Extracted from Abrus precatorius (L)." Antioxidants 3, no. 2: 278-287.

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