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ARS Home » Southeast Area » Oxford, Mississippi » Natural Products Utilization Research » Research » Publications at this Location » Publication #361395

Research Project: Health-Promoting Bioactives and Biobased Pesticides from Medicinal and Herbal Crops

Location: Natural Products Utilization Research

Title: Hydrodistillation extraction kinetics regression models for essential oil yield and composition in Juniperus virginiana, J. excelsa, and J. sabina

Author
item Semerdjieva, Ivanka - Agricultural University Of Bulgaria
item Shiwakoti, Santosh - Oregon State University
item Cantrell, Charles
item Zheljazkov, Valtcho - Oregon State University
item Astatkie, Tess - Dalhousie University
item Schlegel, Vicki - University Of Nebraska
item Radoukova, Tzenka - Plovdiv University

Submitted to: Molecules
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/7/2019
Publication Date: 3/11/2019
Citation: Semerdjieva, I.B., Shiwakoti, S., Cantrell, C.L., Zheljazkov, V.D., Astatkie, T., Schlegel, V., Radoukova, T. 2019. Hydrodistillation extraction kinetics regression models for essential oil yield and composition in Juniperus virginiana, J. excelsa, and J. sabina. Molecules. 24:1-17. https://doi.org/10.3390/molecules24050986.
DOI: https://doi.org/10.3390/molecules24050986

Interpretive Summary: The chemical profile and antioxidant capacity of Juniperus virginiana, J. excelsa, and J. sabina essential oil (EO) fractions as a function of time was the subject of this study. The hypothesis was that capturing EO in sequential timeframes during hydrodistillation would generate fractions with unique compositions and antioxidant capacity. Overall, the results confirmed the hypothesis of this study that capturing the EO segments during specific timeframes will generate EO fractions with different composition and antioxidant capacity. The kinetics regression models that were developed can predict EO composition of the three juniper species eluted at different timeframes. The results of this study could significantly impact the pharmaceutical, aromatic, and other industries that use the EO of J. virginiana, J. excelsa, and J. sabina.

Technical Abstract: The chemical profile and antioxidant capacity of Juniperus virginiana, J. excelsa, and J. sabina essential oil (EO) fractions as a function of time was the subject of this study. The hypothesis was that capturing EO in sequential timeframes during hydrodistillation would generate fractions with unique compositions and antioxidant capacity. In J. virginiana, the highest R-(+)-limonene (43%) was found in the 0-5 min oil fraction, safrole (37%) was highest in the 10-20 and 20-40 min fractions and elemol (34%) was highest in the 160-240 min fraction. In J. excelsa, a-pinene (34-36%) was highest in the 0-5 min fraction and in the control (non-interrupted 0-240 min distillation) oil, R-(+)-limonene (39%) was highest in the 0-10 min fractions and cedrol (50-53%) was highest in the 40-240 min fractions. In J. sabina, sabinene (80%) was highest in the 0-3 min fraction. The highest antioxidant capacity of J. virginiana was demonstrated by the 5-10 min fraction; the one in J. sabina by the 3-10 min fraction; and the one in J. excelsa, by the control. The kinetics regression models that were developed can predict EO composition of the three juniper species eluted at different timeframes. The results from this study could benefit various industries.