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original articleIssue 14 (2) 2015 pp. 97?1

Ravi Shankara Birur Eshwarappa1,2,3, Y. L. Ramachandra3, Sundara Rajan Subaramaihha2, Sujan Ganapathy Pasura Subbaiah2, Richard Surendranath Austin4, Bhadrapura Lakkappa Dhananjaya5

1Department of Chemistry, School of Graduate Studies, Jain University, India
Research Unit in Vrukshayurveda, A Division of Centre for Advanced Studies in Biosciences, Jain University, India
PG Department of Studies and Research in Biotechnology, Kuvempu University, India
Department of Biochemistry, University of Mysore, India
Toxinology/Toxicology and Drug Discovery Unit, Centre for Emerging Technologies (CET), India

Antioxidant activities of leaf galls extracts of Terminalia chebula (Gaertn.) Retz. (Combretaceae)


Background. Free radicals are implicated in several metabolic diseases and the antioxidant therapy has gained an utmost importance in the treatment. The medicinal properties of plants have been investigated and explored for their potent antioxidant activities to counteract metabolic disorders. In this study, the chemical composition and free radical scavenging potential of leaf gall extracts (ethanol, petroleum ether, chloroform and aqueous) of Terminelia chebula is evaluated, which is extensively used in the preparation of traditiona medications to treat various metabolic diseases.
Material and methods. The presences of phenolics, flavonoids, triterpens, saponins, glycosides, phytosterols, reducing sugars were identified in the extracts according to standard procedures. The free radical scavenging activities of the extract were also analysed by standard procedures.
Results. The methanol extract had the highest total phenolic and flavonoid content. The antioxidant activities of leaf gall extracts were examined using diphenylpicrylhydrazyl (DPPH), Super oxide radical scavenging, Hydroxyl scavenging and ferric reducing power (FRAP) methods. In all the methods, the ethanolic extract showed higher free radical scavenging potential than all the other extracts.
Conclusion. As the higher content of both total phenolics and flavonoids were found in the ethanolic extract, so the significantly high antioxidant activity can be positively correlated to the high content of total polyphenols/flavonoids of the ethanol extract. The results of this study confirm the folklore use of T. chebula leaves gall extracts as a natural antioxidant and justify its ethnobotanical use. Further, the results of antioxidant properties encourage the use of T. chebula leave gall extracts for medicinal health, functional food and nutraceutical applications.

Keywords: Terminelia chebula, plants, galls, antioxidant, gallic acid, metabolic diseases, drug
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For citation:

MLA Eshwarappa, Ravi Shankara Birur, et al. "Antioxidant activities of leaf galls extracts of Terminalia chebula (Gaertn.) Retz. (Combretaceae)." Acta Sci.Pol. Technol. Aliment. 14.2 (2015): 97?1. http://dx.doi.org/10.17306/J.AFS.2015.2.11
APA Eshwarappa R. S. B., Ramachandra Y. L., Subaramaihha S. R., Subbaiah S. G. B., Austin R. S., Dhananjaya B. L. (2015). Antioxidant activities of leaf galls extracts of Terminalia chebula (Gaertn.) Retz. (Combretaceae). Acta Sci.Pol. Technol. Aliment. 14 (2), 97?1 http://dx.doi.org/10.17306/J.AFS.2015.2.11
ISO 690 ESHWARAPPA, Ravi Shankara Birur, et al. Antioxidant activities of leaf galls extracts of Terminalia chebula (Gaertn.) Retz. (Combretaceae). Acta Sci.Pol. Technol. Aliment., 2015, 14.2: 97?1. http://dx.doi.org/10.17306/J.AFS.2015.2.11