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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.

Summary: The major volatile compounds of essential oil of Satureja macrostema were caryophyllene, limonene, linalool, pulegone, menthone and thymolThe essential oil of S. macrostema showed a high free radical scavengingThymol exerted the highest antioxidant capacity by DPPH, ABTS and TAC methods. Abbreviations used: GC: Gas Chromatography; DPPH: 2,2-diphenyl-1-picrylhydrazyl; ABTS: 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid; TAC: Total antioxidant capacity.

Competing Interests: There are no conflicts of interest.

Titel:	Antioxidant Activity of the Essential Oil and its Major Terpenes of Satureja macrostema (Moc. and Sessé ex Benth.) Briq.
Autor/in / Beteiligte Person:	Torres-Martínez, R ; García-Rodríguez, YM ; Ríos-Chávez, P ; Saavedra-Molina, A ; López-Meza, JE ; Ochoa-Zarzosa, A ; Garciglia, RS
Zeitschrift:	Pharmacognosy magazine, Jg. 13 (2018), Heft Suppl 4, S. S875-S880
Veröffentlichung:	2023- : [Thousand Oaks] : SAGE Publications ; <i>Original Publication</i>: 2005-<2009> : Bangalore : Phcog.Net, Al-Ameen College of Pharmacy, 2018
Medientyp:	academicJournal
ISSN:	0973-1296 (print)
DOI:	10.4103/pm.pm_316_17
Sonstiges:	Nachgewiesen in: MEDLINE Sprachen: English Publication Type: Journal Article Language: English [Pharmacogn Mag] 2018 Jan; Vol. 13 (Suppl 4), pp. S875-S880. <i>Date of Electronic Publication: </i>2018 Jan 31. References: Phytother Res. 2007 Apr;21(4):308-23. (PMID: 17199238) ; J Agric Food Chem. 2004 May 5;52(9):2485-9. (PMID: 15113145) ; Med Princ Pract. 2012;21(2):178-82. (PMID: 22095089) ; Anal Biochem. 1999 May 1;269(2):337-41. (PMID: 10222007) ; Free Radic Res Commun. 1993;19(3):141-58. (PMID: 8244084) ; Planta Med. 2003 May;69(5):413-9. (PMID: 12802721) ; Molecules. 2013 Apr 09;18(4):4170-80. (PMID: 23571530) ; J Agric Food Chem. 2009 May 13;57(9):3943-8. (PMID: 19326866) ; J Food Sci Technol. 2015 Apr;52(4):2312-9. (PMID: 25829614) ; J Ethnopharmacol. 2008 Aug 13;118(3):343-53. (PMID: 18579110) ; Inflamm Allergy Drug Targets. 2009 Mar;8(1):2-10. (PMID: 19275687) ; Vitam Horm. 2005;72:505-35. (PMID: 16492481) ; J Econ Entomol. 2006 Oct;99(5):1717-21. (PMID: 17066804) ; J Food Sci. 2011 Sep;76(7):S445-50. (PMID: 22417562) ; Food Chem Toxicol. 1994 Jan;32(1):31-6. (PMID: 7510659) ; J Agric Food Chem. 2003 Jul 2;51(14):3958-65. (PMID: 12822930) ; Cytokine. 2010 Feb;49(2):123-9. (PMID: 20005737) ; J Agric Food Chem. 2004 May 19;52(10):2849-54. (PMID: 15137824) ; Food Chem Toxicol. 2008 Feb;46(2):446-75. (PMID: 17996351) ; Environ Toxicol Pharmacol. 2009 Mar;27(2):187-94. (PMID: 21783938) ; Talanta. 2004 Feb 6;62(2):407-11. (PMID: 18969310) Contributed Indexing: Keywords: Free radicals; hydrodistillation; medicinal plant; nurite; volatile compounds Entry Date(s): Date Created: 20180302 Latest Revision: 20240315 Update Code: 20240315 PubMed Central ID: PMC5822514

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