Comparative Study of the Chemical Composition of the Essential Oil of Lippia oreganoides Collected in Two Different Seasons in Venezuela

Abstract

The essential oils from the leaves of Lippia oreganoides collected in June 2003 (rainy season) and February 2004 (dry season) were analyzed by GC/MS. Thymol (61.9% and 44.7%, respectively) and carvacrol (7.9% and 16.8%, respectively) proved to be the major constituents of both collections. Linalool (0.4%) was present only in the collection made in June 2003, while carvacryl acetate (0.6% and caryophyllene oxide (1.6%) were only detected in the February 2004 collection.

Keywords

oreganoides Verbenaceae essential oil composition thymol carvacrol p-cymene

References

Terblanché

, Kornelius

(1996) Essential oil constituents of the genus Lippia (Verbenaceae). A literature review. Journal of Essential Oil Research, 8, 471–485.

Pascual

, Slowing

, Carretero

, Mata

, Villar

(2001) Lippia: traditional uses, chemistry and pharmacology: a review. Journal of Ethnopharmacology, 76, 201–214.

Bassols

, Gurni

. (1996) Especies del género Lippia utilizadas en medicina popular latino Americana. Domiguezia, 13, 7–25.

Matos

, Machado

, Craveiro

, Alencar

, Silva

. (1999) Medicinal plants of northeast Brazil containing thymol and carvacrol. Lippia sidoides Cham. and L. gracillis H.B.K. (Verbenaceae). Journal of Essential Oil Research, 11, 666–668.

Gallino

(1987) Una Verbenacea essenziera ricca in Timolo: Lippia origanoides H.B.K. Essenze Derivati Agrumari, 57, 628–629.

Leclercq

, Silva

, García

, Hidalgo

, Cerrutti

, Mestanza

, Rios

, Nina

, Nonato

, Alvarado

, Menéndez

(1999) Aromatic plant oils of the Peruvian Amazon. Part 1. Lippia alba (Mill) N.E. Br. and Cornutia odorata (Poeppig) Poeppig ex Schauer, Verbenaceae. Journal of Essential Oil Research, 11, 753–756.

Tucker

, Maciarello

. (1999) Volatile leaf oil of the “Licorice Verbena” [Lippia alba (Mill) N.E. Brown ex Britton and P. Wils. var. carterae Moldenke] from the North American herb trade. Journal of Essential Oil Research, 11, 314–316.

Brieskorn

, Pöhlmann

(1976) Zum Vorkommen eines isomeren Catalponols und von Tectodimethylather in der Wurzel von Lippia oreganoides H.B.K. Archives der Pharmazie, 309, 829–836.

Adams

. (1995) Identification of essential oil components by GC/MS. Allured Publishing Corporation, Carol Stream, IL, USA.