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In vitro Antioxidant Studies of Fruits of Artemisia nilagirica (Clarke) Pamp.

Author(s): V Suseela, VK Gopalakrishnan, Sumam Varghese
Department of Biochemistry, Karpagam University, Coimbatore-641 021, India

Correspondence Address:
V Suseela Department of Biochemistry, Karpagam University, Coimbatore-641 021 India E-mail:

Antioxidant potential of fruits of Artemisia nilagirica was studied using different in vitro models like 1,1-diphenyl-2-picryl hydrazyl, 2,2-azinobis-(3-ethylbenzothizoline-6-sulphonate), nitric oxide, superoxide, hydroxyl radical and lipid peroxidation. Both the ethanol and aqueous extracts of A. nilagirica fruits at 500 μg/ml showed maximum scavenging activity (89.33% and 89.14%) in quenching 1,1-diphenyl-2-picryl hydrazyl radical. The ethanol extract showed better scavenging activity (69.78%) of 1,1-diphenyl-2-picryl hydrazyl radical followed by the scavenging of nitric oxide radical (73.25%) compared to aqueous extract. In contrast, hydroxyl and superoxide radicals were effectively scavenged by aqueous extract. Total antioxidant capacity of ethanol and aqueous extracts at 500 μg/ml concentration was found to be 56.21 and 62.78 mg ascorbic acid equivalents, respectively. However, both the extracts showed only moderate lipid peroxidation inhibition activity. They were also found to contain considerable total phenols and flavonoids suggesting their role as an effective free radical scavenger. These findings suggest that phenolics and flavonoids in the fruits provide substantial antioxidant activity.

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