Chemical Composition and Larvicidal Activity against Aedes aegypti Larvae of Essential Oils from Four Guarea Species
The essential oils of four Guarea species collected at Manaus (Amazonas, Brazil) were obtained by hydrodistillation and analyzed by GC-MS. Except for one diterpene detected, the compounds identified in the essential oils were hydrocarbons and oxygenated sesquiterpenes. The major sesquiterpenes were...
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MDPI AG
2010-08-01
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| Series: | Molecules |
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| Online Access: | http://www.mdpi.com/1420-3049/15/8/5734/ |
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| author | Roselaine Facanali Ana Cristina da Silva Pinto Lyege Amazonas Maciel Magalhães Marcia Ortiz Mayo Marques Maria da Paz Lima Wanderli Pedro Tadei |
| author_facet | Roselaine Facanali Ana Cristina da Silva Pinto Lyege Amazonas Maciel Magalhães Marcia Ortiz Mayo Marques Maria da Paz Lima Wanderli Pedro Tadei |
| author_sort | Roselaine Facanali |
| collection | DOAJ |
| description | The essential oils of four Guarea species collected at Manaus (Amazonas, Brazil) were obtained by hydrodistillation and analyzed by GC-MS. Except for one diterpene detected, the compounds identified in the essential oils were hydrocarbons and oxygenated sesquiterpenes. The major sesquiterpenes were α-santalene (26.26%) and α-copaene (14.61%) from G. convergens branches; caryophyllene epoxide (40.91%) and humulene epoxide II (14.43%) from G. humaitensis branches; cis-caryophyllene (33.37%) and α-trans-bergamotene (11.88%) from G. scabra leaves; caryophyllene epoxide (36.54%) in leaves and spathulenol (14.34%) in branches from G. silvatica. The diterpene kaurene (15.61%) was found in G. silvatica leaves. Larvicidal activity assay of essential oils against third-instar Aedes aegypti larvae revealed that at higher concentrations (500 and 250 μg/mL), all the essential oils caused 100% mortality after 24 h of exposure. The most active essential oils were those of G. humaitensis branches (LC50 48.6 μg/mL), G. scabra leaves (LC50 98.6 μg/mL) and G. silvatica (LC50 117.9 μg/mL). The differences in the toxicity of essential oils of Guarea species on A. aegypti are due to qualitative and quantitative variations of the components, therefore the larvicidal effect may be due to higher amount of the sesquiterpenes with caryophyllane skeleton. |
| first_indexed | 2024-04-12T23:46:05Z |
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| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-04-12T23:46:05Z |
| publishDate | 2010-08-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj.art-b2597f3e2e0747bd8699482a097008902022-12-22T03:11:51ZengMDPI AGMolecules1420-30492010-08-011585734574110.3390/molecules15085734Chemical Composition and Larvicidal Activity against Aedes aegypti Larvae of Essential Oils from Four Guarea SpeciesRoselaine FacanaliAna Cristina da Silva PintoLyege Amazonas Maciel MagalhãesMarcia Ortiz Mayo MarquesMaria da Paz LimaWanderli Pedro TadeiThe essential oils of four Guarea species collected at Manaus (Amazonas, Brazil) were obtained by hydrodistillation and analyzed by GC-MS. Except for one diterpene detected, the compounds identified in the essential oils were hydrocarbons and oxygenated sesquiterpenes. The major sesquiterpenes were α-santalene (26.26%) and α-copaene (14.61%) from G. convergens branches; caryophyllene epoxide (40.91%) and humulene epoxide II (14.43%) from G. humaitensis branches; cis-caryophyllene (33.37%) and α-trans-bergamotene (11.88%) from G. scabra leaves; caryophyllene epoxide (36.54%) in leaves and spathulenol (14.34%) in branches from G. silvatica. The diterpene kaurene (15.61%) was found in G. silvatica leaves. Larvicidal activity assay of essential oils against third-instar Aedes aegypti larvae revealed that at higher concentrations (500 and 250 μg/mL), all the essential oils caused 100% mortality after 24 h of exposure. The most active essential oils were those of G. humaitensis branches (LC50 48.6 μg/mL), G. scabra leaves (LC50 98.6 μg/mL) and G. silvatica (LC50 117.9 μg/mL). The differences in the toxicity of essential oils of Guarea species on A. aegypti are due to qualitative and quantitative variations of the components, therefore the larvicidal effect may be due to higher amount of the sesquiterpenes with caryophyllane skeleton.http://www.mdpi.com/1420-3049/15/8/5734/Guarea convergensGuarea humaitensisGuarea scabraGuarea silvaticaMeliaceae |
| spellingShingle | Roselaine Facanali Ana Cristina da Silva Pinto Lyege Amazonas Maciel Magalhães Marcia Ortiz Mayo Marques Maria da Paz Lima Wanderli Pedro Tadei Chemical Composition and Larvicidal Activity against Aedes aegypti Larvae of Essential Oils from Four Guarea Species Molecules Guarea convergens Guarea humaitensis Guarea scabra Guarea silvatica Meliaceae |
| title | Chemical Composition and Larvicidal Activity against Aedes aegypti Larvae of Essential Oils from Four Guarea Species |
| title_full | Chemical Composition and Larvicidal Activity against Aedes aegypti Larvae of Essential Oils from Four Guarea Species |
| title_fullStr | Chemical Composition and Larvicidal Activity against Aedes aegypti Larvae of Essential Oils from Four Guarea Species |
| title_full_unstemmed | Chemical Composition and Larvicidal Activity against Aedes aegypti Larvae of Essential Oils from Four Guarea Species |
| title_short | Chemical Composition and Larvicidal Activity against Aedes aegypti Larvae of Essential Oils from Four Guarea Species |
| title_sort | chemical composition and larvicidal activity against aedes aegypti larvae of essential oils from four guarea species |
| topic | Guarea convergens Guarea humaitensis Guarea scabra Guarea silvatica Meliaceae |
| url | http://www.mdpi.com/1420-3049/15/8/5734/ |
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