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    Antioxidant Activity of the Essential Oil and its Major Terpenes of Satureja macrostema (Moc. and Sessé ex Benth.) Briq.

    Rafael Torres-Martínez1, Yolanda Magdalena García-Rodríguez2, Patricia Ríos-Chávez3, Alfredo Saavedra-Molina4, Joel Edmundo López-Meza4, Alejandra Ochoa-Zarzosa4, Rafael Garciglia4★★ Corresponding author

    1. 1Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Morelia, México.
    2. 2Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Morelia, México.
    3. 3Universidad Michoacana de San Nicolás de Hidalgo, Morelia, México.
    4. 4Centro Multidisciplinario de Estudios en Biotecnología, UMSNH, Tarímbaro, Michoacán, México.

    CORRESPONDENCE

    Rafael Garciglia

    Rafael Salgado Garciglia,Centro Multidisciplinario de Estudios en Biotecnología, UMSNH, Tarímbaro, Michoacán, México.

    rsalgadogarciglia@gmail.com

    Received: 18-07-2017; Revised: 22-08-2017; Accepted: 31-01-2018.

    Volume 13, Issue 52s · pp. S875–80 · PUBLISHED 31 January 2018 · DOI: 10.4103/pm.pm_316_17

    View on Pharmacogn. Mag. original site ↗

    ABSTRACT

    Background: The aim of this study was to investigate the in vitro antioxidant activity of Satureja macrostema (Moc. and Sessé ex Benth.) Briq. (Lamiaceae) essential oil, a Mexican medicinal plant known as nurite. Materials and Methods: Fresh aerial parts of S. macrostema plants cultivated in greenhouse for 3 months were subjected to hydrodistillation in a Clevenger apparatus to obtain essential oil. Volatile compounds were identified by gas chromatography (GC) and GC/mass spectrometry. Antioxidant effectiveness of essential oil and its major terpenes of S. macrostema was examined by three different radical scavenging methods: 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2’-azinobis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS), and total antioxidant capacity (TAC). The concentrations tested were 0.001, 0.01, 0.1, and 1 mg/mL. Results: The major volatile compounds were caryophyllene, limonene, linalool, pulegone, menthone, and thymol. S. macrostema essential oil showed the highest free radical scavenging activity with DPPH and ABTS methods (53.10% and 92.12%, respectively) at 1 mg/mL and 98% with TAC method at 0.1 mg/mL. Thymol exerted the highest antioxidant capacity with 0.1 mg/mL, reaching 83.38%, 96.96%, and 98.57% by DPPH, ABTS, and TAC methods. Caryophyllene, limonene, linalool, pulegone, and menthone exhibited an antioxidant capacity <25% with the DPPH and ABTS methods; however, limonene showed a TAC of 85.41% with 0.01 mg/mL. Conclusion: The essential oil of S. macrostema and thymol showed a free radical scavenging activity close to that of the synthetic butylated hydroxytoluene.

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      Torres-Martínez, R., García-Rodríguez, Y. M., Ríos-Chávez, P., Saavedra-Molina, A., López-Meza, J. E., Ochoa-Zarzosa, A., & Garciglia, R. (2018). Antioxidant Activity of the Essential Oil and its Major Terpenes of Satureja macrostema (Moc. and Sessé ex Benth.) Briq.. Pharmacognosy Magazine, 13(52s), S875–80. https://doi.org/110.4103/pm.pm_316_17