Antioxidant activities of different aerial parts of putat (Barringtonia racemosa L.)

H, Nurul Mariam and Muse, Radzali and Ramli, Johari and Ahmad, Syahida and Mahmood, Maziah (2008) Antioxidant activities of different aerial parts of putat (Barringtonia racemosa L.). Malaysian Journal of Biochemistry and Molecular Biology, 16 (2). pp. 15-19. ISSN 1511-2616

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Abstract

The antioxidant activities of methanolic, ethanolic and boiling water extracts of Barringtonia racemosa leaves, sticks, and barks were studied and their contents of total phenolics, flavonoids and carotenoids were measured. Methanolic extracts of aerial parts of the plant contained relatively higher levels of total phenolics than other extracts (leaf: 16.2 ± 0.02 mg gallic acid equivalent/g freeze dried-weight (FDW) tissue, stick: 29.9 ± 0.02 mg gallic acid equivalent/g FDW tissue, bark: 21.78 ± 0.20 mg gallic acid equivalent/g FDW tissue). The ethanolic extracts in aerial parts gave higher levels of total flavonoid (leaf: 38.55 ± 2.75 mg rutin/g FDW tissue, stick: 40.72 ± 5.91 mg rutin/g FDW tissue, bark: 68.29 ± 9.63 mg rutin/g FDW tissue). The amounts of β-carotene and lycopene were found higher in methanolic and ethanolic extracts of the leaf (342.2 ± 8.79 μg β-carotene/g FDW tissue, 77.38 ± 4.61μg lycopene/g freeze dried-weight tissue; 356.9 ± 0.93 μg β-carotene/g FDW tissue, 99.3 ± 5.29 μg lycopene/g FDW tissue,respectively). The methanolic and ethanolic extracts in all aerial parts tested exhibited very strong antioxidant properties when compared to butylated hydroxytoluene (BHT), ascorbic acid and α-tocopherol in the free radical scavenging and reducing power assays.

Item Type:Article
Keyword:Barringtonia racemosa; Putat;, Aerial parts; Antioxidant
Subject:Barringtonia racemosa
Faculty or Institute:Faculty of Biotechnology and Biomolecular Sciences
Publisher:Universiti Malaya
ID Code:17682
Deposited By: Nida Hidayati Ghazali
Deposited On:13 Dec 2011 06:51
Last Modified:27 May 2013 07:56

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