Detalhes bibliográficos
| Ano de defesa: |
2012 |
| Autor(a) principal: |
MORAES, Marcílio Martins de
 |
| Orientador(a): |
CÂMARA, Cláudio Augusto Gomes da |
| Banca de defesa: |
FREITAS FILHO, João Rufino de,
SILVA, Lourinalda Luiza Dantas da,
OLIVEIRA, Ronaldo Nascimento de |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal Rural de Pernambuco
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Química
|
| Departamento: |
Departamento de Química
|
| País: |
Brasil
|
| Palavras-chave em Português: |
|
| Área do conhecimento CNPq: |
|
| Link de acesso: |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6359
|
Resumo: |
The present study aims to investigate the chemical composition of essential oil from leaves of Ocotea duckei and Ocotea glomerata and leaves and fruits of Eugenia langsdorffii by GC-FID and GC-MS and to evaluate the acaricide action of essential oils and their compounds (separately and as blends) on the Tetranycus urticae.The oils from the leaves of species of the genus Ocotea were characterized by high percentage of sesquiterpenes. The main compounds identified were β-caryophyllene (18.6 ± 0.1%) and valenceno (17.6 ± 0.0%) for the oil of O. duckei and aromadendrene (17.3 ± 0.6%) and β-caryophyllene (14.6 ± 0.3%) for the oil of O. glemerata. The oils from leaves and fruits of E. langsdorffii were characterized by high percentage of sesquiterpenes. Epi-longipinanol (13.6 ± 0.1%) and -eudesmol (12.3 ± 0.2%) were the main components of oil from the leaves, while 10-epi-- eudesmol (35.7 ± 0.3%) and 1,10-di-epi-cubennol (15.6 ± 0.3%) were the major identified in the oil of the fruits. All oils tested were toxic to T. urticae. The oil of O. duckei (LC50 = 0.52 mL L-1from air) showed 2.5 times more toxic than the oil of O. glomerata fumigation test and 1.5 times more toxic than the oil of O. glomerata (LC50 = 7.22 mL / mL) in the residual contact test. The oil from the leaves of E. langsdorffii (LC50 = 1.7 mL L-1 air) was 1.7 times more toxic than the oil of the fruit by fumigation, and 1.8 times less toxic by residual contact. The fumigation toxicity observed for all oils was much lower compared with the positive control (eugenol). However, the effect of residual contact of the oils from the leaves of O. duckei, O. glomerata and the fruits of E. langsdorffii were only 2.5, 4.0 and 6.7 times lower than that of eugenol. The relationship between property acaricide, constituents and the blends of all the oils investigated in this work is also discussed. |
