Next Article in Journal
Next Article in Special Issue
Previous Article in Journal
Int. J. Mol. Sci. 2011, 12(5), 2958-2971; doi:10.3390/ijms12052958
Article

Polyphenolic Contents and Antioxidant Potential of Stem Bark Extracts from Jatropha curcas (Linn)

1
, 2
, 2
, 3
, 2
, 2,4
, 2
 and 2,3,*
Received: 7 March 2011; in revised form: 10 April 2011 / Accepted: 27 April 2011 / Published: 5 May 2011
(This article belongs to the Special Issue Antioxidants)
View Full-Text   |   Download PDF [331 KB, uploaded 19 June 2014]   |   Browse Figures
Abstract: We assessed the polyphenolic contents and antioxidant potential of the aqueous, ethanol and methanol stem bark extracts of Jatropha curcas. The total phenol, flavonoids, flavonols and proanthocyanidin contents of the extracts were evaluated to determine their effect on the antioxidant property of this plant, using standard phytochemical methods. The antioxidant and free radical scavenging activity of ethanol, methanol and aqueous extracts of the plant were also assessed against 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2’-azino-bis-(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), ferric reducing, nitric oxide (NO), superoxide anion, (O2) and hydrogen peroxide (H2O2) using spectroscopic methods and results were compared with that of butylated hydroxyl toluene (BHT) and ascorbic acid as standards. The concentrations of different classes of phenolic compounds were higher in methanol and ethanol extracts compared to aqueous extracts. There was correlation between total phenol, total flavonoids, total flavonol and total proanthocyanidins (r = 0.996, 0.978, 0.908, and 0.985) respectively. There was correlations between the amount of phenolic compounds and percentage inhibition of DPPH radicals scavenging activity of the extract (r = 0.98). Findings from the present study indicated that J. curcas is a potential source of natural antioxidants and may be a good candidate for pharmaceutical plant based products.
Keywords: Jatropha curcas; antioxidant activity; polyphenolics; free radicals; scavenging capacity Jatropha curcas; antioxidant activity; polyphenolics; free radicals; scavenging capacity
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.

Export to BibTeX |
EndNote


MDPI and ACS Style

Igbinosa, O.O.; Igbinosa, I.H.; Chigor, V.N.; Uzunuigbe, O.E.; Oyedemi, S.O.; Odjadjare, E.E.; Okoh, A.I.; Igbinosa, E.O. Polyphenolic Contents and Antioxidant Potential of Stem Bark Extracts from Jatropha curcas (Linn). Int. J. Mol. Sci. 2011, 12, 2958-2971.

AMA Style

Igbinosa OO, Igbinosa IH, Chigor VN, Uzunuigbe OE, Oyedemi SO, Odjadjare EE, Okoh AI, Igbinosa EO. Polyphenolic Contents and Antioxidant Potential of Stem Bark Extracts from Jatropha curcas (Linn). International Journal of Molecular Sciences. 2011; 12(5):2958-2971.

Chicago/Turabian Style

Igbinosa, Osamuyimen O.; Igbinosa, Isoken H.; Chigor, Vincent N.; Uzunuigbe, Olohirere E.; Oyedemi, Sunday O.; Odjadjare, Emmanuel E.; Okoh, Anthony I.; Igbinosa, Etinosa O. 2011. "Polyphenolic Contents and Antioxidant Potential of Stem Bark Extracts from Jatropha curcas (Linn)." Int. J. Mol. Sci. 12, no. 5: 2958-2971.



Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert