Journal of
Medicinal Plants Research

  • Abbreviation: J. Med. Plants Res.
  • Language: English
  • ISSN: 1996-0875
  • DOI: 10.5897/JMPR
  • Start Year: 2007
  • Published Articles: 3753

Full Length Research Paper

Study of seasonality and location effects on the chemical composition of essential oils from Eugenia uniflora leaves

Gonçalves Adilson Júnior
  • Gonçalves Adilson Júnior
  • School of Arts, Sciences and Humanities, University of São Paulo, 03828-000 São Paulo-SP, Brazil.
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Eutimio G. Fernández Núñez
  • Eutimio G. Fernández Núñez
  • School of Arts, Sciences and Humanities, University of São Paulo, 03828-000 São Paulo-SP, Brazil.
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Renata O. Santos
  • Renata O. Santos
  • School of Arts, Sciences and Humanities, University of São Paulo, 03828-000 São Paulo-SP, Brazil.
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Bryna T. Haraki Otaviano
  • Bryna T. Haraki Otaviano
  • School of Arts, Sciences and Humanities, University of São Paulo, 03828-000 São Paulo-SP, Brazil.
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Rosely L. Imbernon
  • Rosely L. Imbernon
  • School of Arts, Sciences and Humanities, University of São Paulo, 03828-000 São Paulo-SP, Brazil.
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Fabiana C. Pioker
  • Fabiana C. Pioker
  • School of Arts, Sciences and Humanities, University of São Paulo, 03828-000 São Paulo-SP, Brazil.
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Marcelo J. Pena Ferreira
  • Marcelo J. Pena Ferreira
  • Botanic Department, Institute of Biosciences, University of São Paulo, 05508-090 São Paulo-SP, Brazil.
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Miriam Sannomiya
  • Miriam Sannomiya
  • School of Arts, Sciences and Humanities, University of São Paulo, 03828-000 São Paulo-SP, Brazil.
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  •  Received: 03 May 2021
  •  Accepted: 22 July 2021
  •  Published: 31 July 2021

Abstract

The essential oils of Eugenia uniflora leave possess several biological activities but a great variability in their chemical composition is observed. In the present study, gas chromatography and mass spectrometry were applied to examine the essential oil from leaves of four different specimens over the seasons of the year, two of which are located in a habitat of a Brazilian metropolis, and the other two in a natural reserve. The collected data allowed identifying twenty-nine compounds; an aliphatic ketone, sesquiterpenes, fatty acids, hydrocarbons, and phthalate derivatives. Sesquiterpene hydrocarbons and oxygenated sesquiterpenes were the chemical classes prevailing in most samples. The curzerene was observed in higher content (10.5-53.4%) in all samples in which the presence of sesquiterpenes class was confirmed. Phthalate derivatives were identified for the first time in the essential oil of E. uniflora leaves. The occurrence of a common chemical marker for four specimens was not observed. Besides, no compound was observed in the same specimen throughout the seasons, and specimens of the same habitat exhibited different essential oil chemical profiles. According to the multivariate analysis applied to the chemical profile for all individuals in different seasons, four different clusters were identified without dependence on season or location.

Key word: Eugenia uniflora, seasonality, location, essential oil, chemical composition.