Journal
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
Volume 20, Issue 4, Pages 319-325Publisher
ELSEVIER
DOI: 10.1016/j.sjbs.2012.12.005
Keywords
Antioxidant; Bauhinia vahlii; Plant extracts; Total phenolics; DPPH
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Funding
- Next-Generation BioGreen 21 Program, Rural Development Administration, Republic of Korea [PJ008157]
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The objectives of this study were to determine phenolic content and antioxidant activities of chloroform, acetone, methanol and hot water extracts of Bauhinia vahlii leaves. The hot water extract afforded the highest yield (6.3%) while the lowest yield was obtained from the chloroform extract (2.1%). The methanol extract contains higher levels of total phenolics (48.7 +/- 0.7 g GAE/100 g extract), tannins (21.7 +/- 0.7 g GAE/100 g extract) and flavonoids (10.3 +/- 0.2 RE/100 g extract). The extracts were subjected to assess their antioxidant potential using various in vitro systems such as DPPH center dot, ABTS radical anion, FRAP, OH center dot, beta-carotene linoleic acid bleaching system, phosphomolybdenum reduction and Fe2+ chelation. It is concluded that the methanolic extract of B. vahlii leaves have strong antioxidant potential. Further study is necessary for isolation and characterization of the active antioxidants, which may serve as a potential source of natural antioxidants. (c) 2013 King Saud University. Production and hosting by Elsevier B.V. All rights reserved.
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