Using GC-MS to Observe Changes in the Essential Oil Concentrations in Cedar Tree (Juniperus virginiana) Leaves During a Drought Year.
In: LC-GC North America, Jg. 31 (2013-07-02), S. 26-30
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Zugriff:
Essential oils were extracted from the leaves of cedar trees using ~50 mL of methylene chloride with an internal standard, m-xylene. The extract was then concentrated to ~2.0 mL by boiling off the solvent and analyzed by gas chromatography-mass spectrometry (GC-MS). Samples were collected monthly and the results were compared to weather data for an entire year, during a drought. By far, the compound in greatest abundance was (ß-pinene, comprising 25 ± 9% of the total essential oils. Total essential oils were found to comprise 0.7 ± 0.3% of the mass of the cedar leaves. It was found that during the summer, the concentration of essential oils was five times that of the concentration in the winter with sufficient rainfall. The concentration of essential oils in the cedar leaves increases with temperature, but is inversely proportional to the rainfall. [ABSTRACT FROM AUTHOR]
| Titel: |
Using GC-MS to Observe Changes in the Essential Oil Concentrations in Cedar Tree (Juniperus virginiana) Leaves During a Drought Year.
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| Autor/in / Beteiligte Person: | Schmidt, Norman E. ; Sandoval, Nikol M. |
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| Zeitschrift: | LC-GC North America, Jg. 31 (2013-07-02), S. 26-30 |
| Veröffentlichung: | 2013 |
| Medientyp: | serialPeriodical |
| ISSN: | 1527-5949 (print) |
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