Chemical Composition and Biological Activity of Five Essential Oils from the Ecuadorian Amazon Rain Forest
In: Molecules, Jg. 24 (2019-04-01), Heft 8
Online
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Zugriff:
The chemical composition and biological activity of essential oils isolated from the leaves of Siparuna aspera, Siparuna macrotepala, Piper leticianum, Piper augustum and the rhizome of Hedychium coronarium were evaluated. These species are used medicinally in different ways by the Amazonian communities that live near the Kutukú
mountain range. Chemical studies revealed that the main components for the two Siparuna species were germacrene D, bicyclogermacrene, &alpha
pinene, &delta
cadinene, &delta
elemene, &alpha
copaene and &beta
caryophyllene
for the two Piper species &beta
caryophyllene, germacrene D, &alpha
(E,E)-farnesene, &beta
elemene, bicyclogermacrene, &delta
cadinene and for H. coronarium 1,8-cineole, &beta
pinene, &alpha
pinene and &alpha
terpineol. The antioxidant activity of all essential oils was evaluated by 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2&prime
azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), photochemiluminescence (PCL) quantitative assays, and DPPH and ABTS bioautographic profiles, with different results for each of them. Antimicrobial activity studies were carried out on three yeasts, six Gram positive and four Gram negative bacteria, by means of the disc diffusion method. The essential oil of H. coronarium showed the most relevant results on L. grayi, K. oxytoca and S. mutans, P. augustum and P. leticianum on S. mutans. An antibacterial bioautographic test for H. coronarium was also carried out and highlighted the potential activity of terpinen-4-ol and 1,8-cineole.
Titel: |
Chemical Composition and Biological Activity of Five Essential Oils from the Ecuadorian Amazon Rain Forest
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Autor/in / Beteiligte Person: | Noriega, Paco ; Manfredini, Stefano ; Sacchetti, Gianni ; Ankuash, Edwin ; Guerrini, Alessandra ; Grandini, Alessandro |
Link: | |
Zeitschrift: | Molecules, Jg. 24 (2019-04-01), Heft 8 |
Veröffentlichung: | MDPI AG, 2019 |
Medientyp: | unknown |
ISSN: | 1420-3049 (print) |
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