Seasonal changes in the essential oils of Aloysia oblanceolata Moldenke
IntroductionAromatic plant species that produce essential oils contain bioactive compounds and medicinal properties, and are thus used in traditional medicine. This study aims to analyze the seasonal variation in Aloysia oblanceolata Moldenke's essential oil's chemical composition in the A...
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Frontiers Media S.A.
2025-06-01
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| author | Paulo Vinicius L. Santos Paulo Vinicius L. Santos Mateus Machado Lima Flavia Cristina A. Lucas Joyce Kelly do R. da Silva José Guilherme S. Maia Pablo Luis B. Figueiredo Pablo Luis B. Figueiredo Pablo Luis B. Figueiredo |
| author_facet | Paulo Vinicius L. Santos Paulo Vinicius L. Santos Mateus Machado Lima Flavia Cristina A. Lucas Joyce Kelly do R. da Silva José Guilherme S. Maia Pablo Luis B. Figueiredo Pablo Luis B. Figueiredo Pablo Luis B. Figueiredo |
| author_sort | Paulo Vinicius L. Santos |
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| description | IntroductionAromatic plant species that produce essential oils contain bioactive compounds and medicinal properties, and are thus used in traditional medicine. This study aims to analyze the seasonal variation in Aloysia oblanceolata Moldenke's essential oil's chemical composition in the Amazon region.MethodsThe botanical material was collected monthly over 1 year; the leaf essential oils were extracted by hydrodistillation, and their chemical composition was analyzed through gas chromatography–mass spectrometry (GC-MS). Local climatic parameters, such as insolation, temperature, relative humidity, and precipitation, were monitored. Multivariate statistical analyses were performed using hierarchical cluster analysis (HCA) and principal component analysis (PCA).Results and discussionThe AoEO yields ranged from 3.4% (December 2022 and February 2023) to 5.3% (August and September 2023), with an average of 4.3% ± 0.7%. Essential oil yields did not show a significant difference (p > 0.05) between the dry (4.7% ± 0.7%) and rainy (4.1% ± 0.6%) periods. GC and GC-MS identified 38 chemical constituents in the essential oils, comprising approximately 94.6%–97.1% of the oils analyzed in the seasonal variation study over the 12-month period. The chemical constituents that significantly correlated with climatic factors were trans-pinocamphone, β-pinene, and E-caryophyllene. Group I was statistically different from Groups II and III in terms of trans-pinocarvyl acetate content (I = 7.0 ± 0.5%; II = 9.1 ± 0.3%; III = 8.2 ± 0.6%). Group II differed from the other groups in terms of its β-pinene (I = 4.3 ± 0.5%; II = 5.2 ± 0.3%; III = 1.6 ± 0.9%), trans-pinocamphone (I = 13.1 ± 1.2%; II = 15.9 ± 0.4%; III = 12.5 ± 2.1%), and E-caryophyllene contents (I = 6.9 ± 0.7%; II = 4.7 ± 0.1%; III = 7.9 ± 1.6%). Furthermore, Group III differed from the other groups in terms of β-pinene content (I = 4.3 ± 0.5%; II = 5.2 ± 0.3%; III = 1.6 ± 0.9%). These results indicate seasonal variations in the chemical composition of the essential oils, possibly influenced by environmental factors and plant development. |
| format | Article |
| id | doaj-art-854f26f60461467d8a48effe26ece4d6 |
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| publishDate | 2025-06-01 |
| publisher | Frontiers Media S.A. |
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| spelling | doaj-art-854f26f60461467d8a48effe26ece4d62025-08-20T02:09:28ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462025-06-011310.3389/fchem.2025.15644041564404Seasonal changes in the essential oils of Aloysia oblanceolata MoldenkePaulo Vinicius L. Santos0Paulo Vinicius L. Santos1Mateus Machado Lima2Flavia Cristina A. Lucas3Joyce Kelly do R. da Silva4José Guilherme S. Maia5Pablo Luis B. Figueiredo6Pablo Luis B. Figueiredo7Pablo Luis B. Figueiredo8Programa de Pós-Graduação em Ciências Farmacêuticas, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, BrazilLaboratório de Química dos Produtos Naturais, Universidade do Estado Pará, Belém, BrazilLaboratório de Química dos Produtos Naturais, Universidade do Estado Pará, Belém, BrazilPrograma de Pós-Graduação em Ciências Ambientais, Universidade do Estado do Pará, Belém, BrazilPrograma de Pós-Graduação em Biotecnologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, BrazilPrograma de Pós-Graduação em Ciências Farmacêuticas, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, BrazilPrograma de Pós-Graduação em Ciências Farmacêuticas, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, BrazilLaboratório de Química dos Produtos Naturais, Universidade do Estado Pará, Belém, BrazilPrograma de Pós-Graduação em Ciências Ambientais, Universidade do Estado do Pará, Belém, BrazilIntroductionAromatic plant species that produce essential oils contain bioactive compounds and medicinal properties, and are thus used in traditional medicine. This study aims to analyze the seasonal variation in Aloysia oblanceolata Moldenke's essential oil's chemical composition in the Amazon region.MethodsThe botanical material was collected monthly over 1 year; the leaf essential oils were extracted by hydrodistillation, and their chemical composition was analyzed through gas chromatography–mass spectrometry (GC-MS). Local climatic parameters, such as insolation, temperature, relative humidity, and precipitation, were monitored. Multivariate statistical analyses were performed using hierarchical cluster analysis (HCA) and principal component analysis (PCA).Results and discussionThe AoEO yields ranged from 3.4% (December 2022 and February 2023) to 5.3% (August and September 2023), with an average of 4.3% ± 0.7%. Essential oil yields did not show a significant difference (p > 0.05) between the dry (4.7% ± 0.7%) and rainy (4.1% ± 0.6%) periods. GC and GC-MS identified 38 chemical constituents in the essential oils, comprising approximately 94.6%–97.1% of the oils analyzed in the seasonal variation study over the 12-month period. The chemical constituents that significantly correlated with climatic factors were trans-pinocamphone, β-pinene, and E-caryophyllene. Group I was statistically different from Groups II and III in terms of trans-pinocarvyl acetate content (I = 7.0 ± 0.5%; II = 9.1 ± 0.3%; III = 8.2 ± 0.6%). Group II differed from the other groups in terms of its β-pinene (I = 4.3 ± 0.5%; II = 5.2 ± 0.3%; III = 1.6 ± 0.9%), trans-pinocamphone (I = 13.1 ± 1.2%; II = 15.9 ± 0.4%; III = 12.5 ± 2.1%), and E-caryophyllene contents (I = 6.9 ± 0.7%; II = 4.7 ± 0.1%; III = 7.9 ± 1.6%). Furthermore, Group III differed from the other groups in terms of β-pinene content (I = 4.3 ± 0.5%; II = 5.2 ± 0.3%; III = 1.6 ± 0.9%). These results indicate seasonal variations in the chemical composition of the essential oils, possibly influenced by environmental factors and plant development.https://www.frontiersin.org/articles/10.3389/fchem.2025.1564404/fulllavenderVerbenaceaemono- and sesquiterpenesessential oil compositionenvironmental factors |
| spellingShingle | Paulo Vinicius L. Santos Paulo Vinicius L. Santos Mateus Machado Lima Flavia Cristina A. Lucas Joyce Kelly do R. da Silva José Guilherme S. Maia Pablo Luis B. Figueiredo Pablo Luis B. Figueiredo Pablo Luis B. Figueiredo Seasonal changes in the essential oils of Aloysia oblanceolata Moldenke Frontiers in Chemistry lavender Verbenaceae mono- and sesquiterpenes essential oil composition environmental factors |
| title | Seasonal changes in the essential oils of Aloysia oblanceolata Moldenke |
| title_full | Seasonal changes in the essential oils of Aloysia oblanceolata Moldenke |
| title_fullStr | Seasonal changes in the essential oils of Aloysia oblanceolata Moldenke |
| title_full_unstemmed | Seasonal changes in the essential oils of Aloysia oblanceolata Moldenke |
| title_short | Seasonal changes in the essential oils of Aloysia oblanceolata Moldenke |
| title_sort | seasonal changes in the essential oils of aloysia oblanceolata moldenke |
| topic | lavender Verbenaceae mono- and sesquiterpenes essential oil composition environmental factors |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2025.1564404/full |
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