Avaliação do óleo essencial das folhas de Piper marginatum (Piperceae) em duas localizações diferentes da Região Norte do Brasil
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Date
2023-06-19Author
http://lattes.cnpq.br/8912922557984027
SANTOS, Rafaela Caroline Moda dos
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Piper marginatum. jacq (Piperaceae), popularly known in the North of Brazil as 'caapeba-cheirosa' or 'pimenta do mato' is a bushy species of native occurrence found mainly in the Brazilian Amazon. The use of Piper is quite diversified in this region, and it is still a plant with few studies regarding the evaluation of the chemical composition of the same species in different locations. The main objective of the present work was to evaluate the variation in yield, chemical composition, and organoleptic characteristics of the essential oil (EOs) of Piper marginatum (P. marginatum), in two different locations in northern Brazil. The oils were obtained by the hydrodistillation method, where yield results were obtained between 0.34% for the sample obtained in the Municipality of Santarém-Pará (OESP) and 0.46% for the sample found in the Municipality of Mojuí dos Campos- Pará (Igarapé do Onça community) (OEIO), and the organoleptic characteristics of P. marginatum EOs were observed with a light yellow color and a strong odor. The chemical analysis carried out by the method of Gas Chromatography coupled to Mass Spectrometry (GC-MS) found the major substances, for OESP, it was observed as major components: Spathulenol (7.95%), caryophyllene oxide ( 7.71%), muurola-4,10(14)-dien-1-β-ol (7.6%), δ-3-Carene (6.49%), 3,4-methylenedioxypropiophenone (6.25 %), α-copaene (4.89%), (E)-caryophyllene (4.52%), β-eudesmol (4.39%), intermedeol (3.74%) and hinesol (3.45%) . In the OEIO, the constituents that presented the highest percentage were: δ-3-Carene (6.79%), (E)-β-caryophyllene (6.54%), α-copaene (4.77%), linalool ( 4.21%) and γ-Muurolene (3.16%). These substances were compared with each other and with the literature to obtain a broad view of their evaluation and application, within the research currently seen. And a significant variation was observed that demonstrates that the environmental variation is responsible for most of the chemical variations present in the EOs of P. marginatum.