Abstract

The aim of the present work is to study the seasonal variation of the chemical profile of the essential oil extracted from Elionurushensii and to evaluate its antioxidant activity. Elionurushensii is usually used by local people as théiform drink to relieve aches. The essential oil analyzed by GC-MS presents a different chemical composition in accordance with its origin (aerial part or root). The oil of the aerial part (stems, leaves and flowering tops) is rich in para-menthe dienolisomers (38-49%), the main ones are: the trans-para-mentha 1 (7), 8-dien 2-ol (10.45-20.83%), cis-para-mentha 1 (7), 8-dien-2-ol (10.30-18.81%), trans-para-mentha -2,8-dien-1-ol (5.32 and 16.22%) and cis-para-mentha-2,8-dien-1-ol (3.85-6.39%). The roots are rather rich in aristolone (14-48%) and her chemical structure was confirmed by the analyzes in ¹H and ¹³C NMR. The limonene is also a leading major both of the essential oil of the aerial part (2.21-19.28%) than that of the roots (9.73-30.44%). The antioxidant activity of the oil was evaluated. The essential oil of the aerial part distillates enriched in major compounds present an inhibiting power DPPH greater than that of complete essential oil, but low compared to that of vitamin C.

Keywords:

Aristolone, antioxidant activity, elionurushensii (schum), para-menthadienols,

References

1. Adams, R.P., 2012. Identification of Essential Oils by Capillary Gas Chromatography/mass Spectroscopy. Allured, Carol Stream, IL.
   
2. Bourkhiss, M., M. Hnach, J. Paolini, J. Costa, A. Farah and B. Satrani, 2010. Propriétés antioxydantes et anti-inflammatoires des huiles essentielles des différentes parties de Tetraclinis articulata (Vahl) Masters du Maroc. B. Soc. Roy. Sci. Liège, 79: 141-154.
   
3. Brand-Williams, W., M.E. Cuvelier and C. Berset, 1995. Use of a free radical method to evaluate antioxidant activity. LWT-Food Sci. Technol., 28(1): 25-30.
   CrossRef    
4. Chagonda, L.S., C. Makanda and J.C. Chalchat, 2000. The essential oils of wild and cultivated Cymbopogon validus (Stapf) Stapf ex Burtt Davy and Elionurus muticus (Spreng.) Kunth from Zimbabwe. Flavour Frag. J., 15(2): 100-104.
   
5. Chagonda, L.S., J.C. Chalchat and J.M. Bessière, 2012. Constituents of the root essential oil of cultivated Elionurus muticus (Spreng.) Kurth from Zimbabwe. Anal. Chem. Lett., 2(3): 177-181.
   
6. Clevenger, J.F., 1928. Apparatus for the determination of volatile oil. J. Am. Pharm. Assoc., 17(4): 345-349.
   CrossRef    
7. Dzingirai, B., M. Muchuweti, T. Murenje, C. Chidewe, M.A.N. Benhura and L.S. Chagonda, 2007. Phenolic content and phospholipids peroxidation inhibition by methanolic extracts of two medicinal plants: Elionurus muticus and Hypoxis hemerocallidea. Afr. J. Biochem. Res., 1(7): 137-141.
   
8. Füller, T.N., C. Tessele, I.B.I. Barros and J.F. Barbosa Neto, 2010. Phenotypical, phytochemical and molecular characterization of "capim-carona" [Elionurus muticus (Spreng.) Kuntze] populations. Rev. Bras. PI. Med., Botucatu, 12(3): 261-268.
   
9. Hefendehl, F.W. and L.R. Fonseca, 1978. Essential oil of Elyonurus viridulus. II. Composition of the oil of a second chemical race. Lloydia, 41: 283-285.
   
10. Hess, S.C., M.T.L.P. Peres, A.L. Batista, J.P. Rodrigues, S.C. Tiviroli, L.G.L. Oliveira, C.W.C. Santos, L.E.S. Fedel, S.M.A. Crispim, A.S. Junior, E.F.A. Smania, A. Flach and S. Pantaroto, 2007. Evaluation of seasonal changes in chemical composition and antibacterial activity of Elyonurus muticus (Sprengel) O. Kuntze (Gramineae). Quim. Nova, 30(2): 370-373. http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000200025.
    CrossRef    
11. Konig, W.A., D.H. Hochmuth and D. Joulain, 2001. Terpenoids and Related Constituents of Essential Oils. Library of Mass Finder 2.1. Institute of Organic Chemistry, Hamburg.
    
12. Mevy, J.P., J.M. Bessiere, M. Dherbomez and J. Viano, 2002. Composition and some biological activities of the essential oils from an African pasture grass: Elionurus elegans Kunth. J. Agr. Food Chem., 50(15): 4240-4243.
    CrossRef    PMid:12105952    Direct Link
13. Muchuweti, M., L. Nyamukonda, L.S. Chagonda, A.R. Ndhlala, C. Mupure and M. Behura, 2006. Total phenolic content and antioxidant activity in selected medicinal plants of Zimbabwe. Int. J. Food Sci. Tech., 41(s1): 33-38.
    
14. National Institute of Standards and Technology (NIST), 2008. Spectral Database for Organic Compounds. NIST WebBook: http//webbook.nist.gov/chemistry.
    Direct Link
15. Scramin, S., M.L. Saito, A. Pott and M.O.M. Marques, 2000. Essential oil of Elyonurus muticus (Sprengel) O.Kuntze (Gramineae). J. Essent. Oil Res., 12(3): 298-300.
    CrossRef    Direct Link
16. Shi, Y., H. Zhi, K. Shang, Y. Michael, A. Ali, F. Chang and Y. Chang, 2009. Chem. Biodivers., 6: 86.
    CrossRef    PMid:19180458    
17. Silou, T., L. Loubaki, G. Figuérédo and J.C. Chalchat, 2006. Study of essential oil composition of Elyonurus hensii Schum from Congo. J. Essent. Oil Res., 18(5): 518-520.
    CrossRef    Direct Link
18. Sun, L.L., C.Y. Wang, H.F. Dai, C.L. Shao, W.L. Mei, T. Liu and Z.D. Ma, 2011. Chemical constituents of Chondrophycus papillosus and their cytotoxicity in vitro. Chem. Nat. Compd., 47: 650.
    CrossRef    Direct Link
19. Yang, Y., M.C. De Cian, S. Nsikabaka, P. Tomi, T. Silou, J. Costa and J. Paolini, 2013. Volatile fraction composition and total phenolic and flavonoid contents of Elionurus hensii -- antioxidant activities of essential oils and solvent extracts. Nat. Prod. Commun., 8(5): 655-661.
    Direct Link

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