Viscosity of the oil-resins and chemical composition of the essential oils from oils-resins of Copaifera multijuga Hayne growing in the National Forest Saracá-Taquera Brazil
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2017-12-20
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Copaifera multijuga Hayne, Fabaceae, is a tree species Amazonian known as “mari mari” or “copaíba roxa”. Its oil-resins are popularly used for various medicinal purposes, especially as anti-inflammatory. The aims of this study were: determine the viscosity of the oil-resins and analyze the chemical composition of the essential oils from oils-resins of eleven specimens of C. multijuga. The essential oils were obtained by hydrodistillation using a Clevenger type apparatus and analyzed by GC/MS. The viscosity ranges from 9.46 to 92.62 mPa.s. for 11 samples of oil-resin. The compounds found in all samples were: β-caryophyllene (36.20 to 85.4%), α-humulene (4.15 to 11.26 %), δ-elemene (0.08 to 8.52 %), β-elemene (0.68 to 2.86 %), and ciprene (0.22 to 1.11 %). The compound trans-4-muurola (1,4), 5-diene was found only in higher amounts in samples 2, 6 and 7, ranging from 14.36 to 36.96 %. It was found that the higher levels of the viscosity are associated with lower contents of the β-caryophyllene. The β-caryophyllene was the major compound found in all samples, thus it can be used as the chemical marker of essential oil these specimens.
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Medicinal plants, β-caryophyllene, Copaifera, Sesquiterpenes, Essential oil composition
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SILVA, Marcos Túlio et al. Viscosity of the oil-resins and chemical composition of the essential oils from oils-resins of Copaifera multijuga Hayne growing in the National Forest Saracá-Taquera Brazil. Journal of Essential Oil Bearing Plants, [ s. l.], v. 20, n. 7, p. 1226-1234, 2017. DOI: 10.1080/0972060X.2017.1358673. Disponível em: https://www.tandfonline.com/doi/abs/10.1080/0972060X.2017.1358673. Acesso em: 11 jul. 2024.