The Norfolk Island pine, Araucaria heterophylla (Salisb.) Franco (Araucariaceae), is a plant that exhibits several pharmacological potentials. Essential oils (EOs) from the plant’s fresh stem bark (FRS) and dry stem bark (DRS) were hydrodistilled in an all-glass Clevenger apparatus and further characterized by Gas Chromatography-Mass Spectrometry analysis. Using Artemia salina eggs hatched in sea water, the brine shrimp lethality assay was carried out for toxicity. The FRS and DRS yielded 0.33% and 0.29% EOs, respectively, constituting 48 and 42 compounds, representing 94.38% and 84.30% of the total oil fractions. The classes of compounds identified in the FRS and DRS EOs, respectively, include sesquiterpenes (40.8% and 41.36%), oxygenated sesquiterpenes (34.93% and 34.22%), oxygenated monoterpenes (11.58% and 2.84%), diterpenes (3.39% and 2.85%), oxygenated diterpenes (3.68% and 2.29%), and oxygenated triterpenes (0.74%, only in the DRS). The major constituents in the FRS EOs are spathulenol (12.12%), germacrene B (10.63%), dihydroedulan I (10.23%), γ-cadinene (6.90%), (-)-globulol(4.67%), aromadendrene (3.62%) and copaene (3.34%) while spathulenol (16.13%), germacrene B (10.37%), aromadendrene (4.93%), copaene (3.54%), β-panasinsene (3.06%) and guaiol (2.99%) majorly constitute the DRS oil. Constituents common and as well dominant in the two EOs include Spathulenol, Germacrene B, Aromadendrene and Copaene. The result of the cytotoxicity analysis showed that both the fresh and dry essential oils have LC50 of 10 ppm. A LC50<100 ppm indicates high toxicity, thus, the EOs possess significant cytotoxicity against A. salina.
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The Norfolk Island pine, Araucaria heterophylla (Salisb.) Franco (Araucariaceae), is a plant that exhibits several pharmacological potentials. Essential oils (EOs) from the plant’s fresh stem bark (FRS) and dry stem bark (DRS) were hydrodistilled in an all-glass Clevenger apparatus and further characterized by Gas Chromatography-Mass Spectrometry analysis. Using Artemia salina eggs hatched in sea water, the brine shrimp lethality assay was carried out for toxicity. The FRS and DRS yielded 0.33% and 0.29% EOs, respectively, constituting 48 and 42 compounds, representing 94.38% and 84.30% of the total oil fractions. The classes of compounds identified in the FRS and DRS EOs, respectively, include sesquiterpenes (40.8% and 41.36%), oxygenated sesquiterpenes (34.93% and 34.22%), oxygenated monoterpenes (11.58% and 2.84%), diterpenes (3.39% and 2.85%), oxygenated diterpenes (3.68% and 2.29%), and oxygenated triterpenes (0.74%, only in the DRS). The major constituents in the FRS EOs are spathulenol (12.12%), germacrene B (10.63%), dihydroedulan I (10.23%), γ-cadinene (6.90%), (-)-globulol(4.67%), aromadendrene (3.62%) and copaene (3.34%) while spathulenol (16.13%), germacrene B (10.37%), aromadendrene (4.93%), copaene (3.54%), β-panasinsene (3.06%) and guaiol (2.99%) majorly constitute the DRS oil. Constituents common and as well dominant in the two EOs include Spathulenol, Germacrene B, Aromadendrene and Copaene. The result of the cytotoxicity analysis showed that both the fresh and dry essential oils have LC50 of 10 ppm. A LC50<100 ppm indicates high toxicity, thus, the EOs possess significant cytotoxicity against A. salina.
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Primary Language | English |
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Subjects | Natural Products and Bioactive Compounds |
Journal Section | Articles |
Authors | |
Project Number | None |
Early Pub Date | January 19, 2025 |
Publication Date | |
Submission Date | May 16, 2024 |
Acceptance Date | October 12, 2024 |
Published in Issue | Year 2025 Volume: 12 Issue: 1 |