Antioxidants (Oct 2022)

Phytochemical Profile, Preliminary Toxicity, and Antioxidant Capacity of the Essential Oils of <i>Myrciaria floribunda</i> (H. West ex Willd.) O. Berg. and <i>Myrcia sylvatica</i> (G. Mey) DC. (Myrtaceae)

  • Ângelo Antônio Barbosa de Moraes,
  • Oberdan Oliveira Ferreira,
  • Leonardo Souza da Costa,
  • Lorena Queiroz Almeida,
  • Everton Luiz Pompeu Varela,
  • Márcia Moraes Cascaes,
  • Celeste de Jesus Pereira Franco,
  • Sandro Percário,
  • Lidiane Diniz do Nascimento,
  • Mozaniel Santana de Oliveira,
  • Eloisa Helena de Aguiar Andrade

DOI
https://doi.org/10.3390/antiox11102076
Journal volume & issue
Vol. 11, no. 10
p. 2076

Abstract

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The essential oils (EOs) of Myrciaria floribunda (Mflo) and Myrcia sylvatica (Msyl) (Myrtaceae) were obtained by hydrodistillation. The analysis of volatile constituents was performed by GC/MS. Preliminary toxicity was assessed on Artemia salina Leach. The antioxidant capacity was measured by the ABTS•+ and DPPH• radical inhibitory activities. The results indicate that the Mflo EO had the highest yield (1.02%), and its chemical profile was characterized by high levels of hydrocarbon (65.83%) and oxygenated (25.74%) monoterpenes, especially 1,8-cineole (23.30%), terpinolene (22.23%) and α-phellandrene (22.19%). Regarding the Msyl EO, only hydrocarbon (51.60%) and oxygenated (46.52%) sesquiterpenes were identified in the sample, with (Z)-α-trans-bergamotene (24.57%), α-sinensal (13.44%), and (Z)-α-bisabolene (8.33%) at higher levels. The EO of Mflo exhibited moderate toxicity against A. salina (LC50 = 82.96 ± 5.20 µg.mL−1), while the EO of Msyl was classified as highly toxic (LC50 = 2.74 ± 0.50 µg.mL−1). In addition, relative to Trolox, the EOs of Mflo and Msyl showed significant inhibitory effects (p • radical. This study contributes to the expansion of chemical and biological knowledge on the EOs of Myrtaceae species from the Amazon region.

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