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Essential oil composition of Eugenia langsdorffii O. Berg.: relationships between some terpenoids and toxicity against Tetranychus urticae

Leaf and fruit essential oils of Eugenia langsdorffii were analyzed by GC-FID (gas chromatography with flame ionization detection) and GC-MS (gas chromatography with mass spectrometric detection), featuring a high percentage of sesquiterpenes. epi-Longipinanol (13.6 ± 0.1%) and γ-eudesmol (12.3 ± 0....

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Main Authors: Moraes, Marcílio M. de, Camara, Claudio A. G. da, Santos, Maria L. dos, Fagg, Christopher William
Format: Artigo
Language: English
Published: Sociedade Brasileira de Química 2017
Subjects:
Eugenia langsdorffii
essential oil composition
acaricidal actitivity
spider mite
Online Access: http://repositorio.unb.br/handle/10482/28438
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spelling ir-10482-284382019-03-28T14:02:56Z Essential oil composition of Eugenia langsdorffii O. Berg.: relationships between some terpenoids and toxicity against Tetranychus urticae Moraes, Marcílio M. de Camara, Claudio A. G. da Santos, Maria L. dos Fagg, Christopher William Eugenia langsdorffii essential oil composition acaricidal actitivity spider mite Leaf and fruit essential oils of Eugenia langsdorffii were analyzed by GC-FID (gas chromatography with flame ionization detection) and GC-MS (gas chromatography with mass spectrometric detection), featuring a high percentage of sesquiterpenes. epi-Longipinanol (13.6 ± 0.1%) and γ-eudesmol (12.3 ± 0.2%) were the principal components of the leaf oil, whereas 10-epi-γ-eudesmol (35.7 ± 0.3%) and 1,10-di-epi-cubennol (15.6 ± 0.3%) were the major constituents of the fruit oil. A comparative study to assess fumigant and residual contact toxicities of the oils was conducted. The leaf oil (lethal concentration average, LC50 = 1.7 µL L-1 of air) was 1.7 times more toxic than the fruit oil and 1.8 times less toxic by residual contact. The positive control (eugenol) was much more toxic in the fumigation bioassay than Eugenia langsdorffii oils. Nevertheless, the residual contact effect of the fruit oil (LC50 = 12.25 µL mL-1) was just 6.7 times smaller than that of eugenol. The role of terpenoids in the acaricidal property of the E. langsdorffii essential oils was also discussed. Óleos essenciais das folhas e frutos de Eugenia langsdorffii foram analisados por CG-FID (cromatografia gasosa com detecção através de ionização por chama) e CG-EM (cromatografia gasosa com detecção por espectrometria de massas) e exibiram alta percentagem de sesquiterpenos. epi-Longipinanol (13,6 ± 0,1%) e γ-eudesmol (12,3 ± 0,2%) foram os componentes principais do óleo das folhas, enquanto que 10-epi-γ-eudesmol (35,7 ± 0,3%) e 1,10-di-epi-cubenol (15,6 ± 0,3%) foram majoritários no óleo dos frutos. Estudo comparativo da toxicidade por fumigação e contato residual desses óleos foi conduzido. O óleo das folhas (dose letal média, LC50 = 1,7 µL L-1 de ar) foi 1,7 vezes mais tóxico do que o óleo dos frutos por fumigação, e 1,8 vezes menos tóxico por contato residual. O controle positivo (eugenol) foi muito mais tóxico no bioensaio de fumigação do que os óleos de Eugenia. Entretanto, o efeito de contato residual do óleo dos frutos (LC50 = 12,25 µL mL-1) foi apenas 6,7 vezes menor do que o do eugenol. A função exercida por terpenóides na propriedade acaricida dos óleos de E. langsdorffii também foi discutida. 2017-12-07T04:59:38Z 2017-12-07T04:59:38Z 2012 Artigo J. Braz. Chem. Soc.,v.23,n.9,p.1647-1656,2012 0103-5053 http://repositorio.unb.br/handle/10482/28438 10.1590/S0103-50532012005000029 en Acesso Aberto application/pdf Sociedade Brasileira de Química http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000900009&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-50532012000900009&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0103-50532012000900009&lng=en&nrm=iso
institution REPOSITORIO UNB
collection REPOSITORIO UNB
language English
topic Eugenia langsdorffii
essential oil composition
acaricidal actitivity
spider mite
spellingShingle Eugenia langsdorffii
essential oil composition
acaricidal actitivity
spider mite
Moraes, Marcílio M. de
Camara, Claudio A. G. da
Santos, Maria L. dos
Fagg, Christopher William
Essential oil composition of Eugenia langsdorffii O. Berg.: relationships between some terpenoids and toxicity against Tetranychus urticae
description Leaf and fruit essential oils of Eugenia langsdorffii were analyzed by GC-FID (gas chromatography with flame ionization detection) and GC-MS (gas chromatography with mass spectrometric detection), featuring a high percentage of sesquiterpenes. epi-Longipinanol (13.6 ± 0.1%) and γ-eudesmol (12.3 ± 0.2%) were the principal components of the leaf oil, whereas 10-epi-γ-eudesmol (35.7 ± 0.3%) and 1,10-di-epi-cubennol (15.6 ± 0.3%) were the major constituents of the fruit oil. A comparative study to assess fumigant and residual contact toxicities of the oils was conducted. The leaf oil (lethal concentration average, LC50 = 1.7 µL L-1 of air) was 1.7 times more toxic than the fruit oil and 1.8 times less toxic by residual contact. The positive control (eugenol) was much more toxic in the fumigation bioassay than Eugenia langsdorffii oils. Nevertheless, the residual contact effect of the fruit oil (LC50 = 12.25 µL mL-1) was just 6.7 times smaller than that of eugenol. The role of terpenoids in the acaricidal property of the E. langsdorffii essential oils was also discussed.
format Artigo
author Moraes, Marcílio M. de
Camara, Claudio A. G. da
Santos, Maria L. dos
Fagg, Christopher William
author_sort Moraes, Marcílio M. de
title Essential oil composition of Eugenia langsdorffii O. Berg.: relationships between some terpenoids and toxicity against Tetranychus urticae
title_short Essential oil composition of Eugenia langsdorffii O. Berg.: relationships between some terpenoids and toxicity against Tetranychus urticae
title_full Essential oil composition of Eugenia langsdorffii O. Berg.: relationships between some terpenoids and toxicity against Tetranychus urticae
title_fullStr Essential oil composition of Eugenia langsdorffii O. Berg.: relationships between some terpenoids and toxicity against Tetranychus urticae
title_full_unstemmed Essential oil composition of Eugenia langsdorffii O. Berg.: relationships between some terpenoids and toxicity against Tetranychus urticae
title_sort essential oil composition of eugenia langsdorffii o. berg.: relationships between some terpenoids and toxicity against tetranychus urticae
publisher Sociedade Brasileira de Química
publishDate 2017
url http://repositorio.unb.br/handle/10482/28438
_version_ 1641988866684485632
score 13.657419

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