Chemical characterization of Lavandula dentata L. essential oils grown in Uberaba-MG

Abstract

The essential oils of the different parts of Lavandula dentata L. (inflorescences and aerial part without inflorescences) collected in the city of Uberaba (minas Gerais State)were obtained by hydro distillation, and their chemical composition was determined by gas chromatography coupled to mass spectrometry and compared to the chemical composition of essential oil of Lavandula hybrida and Lavandula officinalis. It was observed that the essential oils of the studied species have varied chemical composition and are composed mainly of monoterpenes. The essential oils of L. hybrida and L. officinalis showed a higher concentration of linalool and linaline acetate, while L. dentata L. presented higher concentration of fenchone, eucalyptol and camphor. Results indicate that the essential oil composition of L. dentata L. grown in Uberaba is similar to those produced in Curitiba - PR, providing a promising perspective for the cultivation and extraction of essential oils of this species in Minas Gerais.

Lavandula dentata from Italy: Analysis of Trichomes and Volatiles

“…[18] In most studies, the dominance of the oxygenated monoterpenes was confirmed, [10,16,17,22] but both the total number of compounds and the major compounds varied. According to this, different chemotypes were recognized in L. dentata, i. e., i) 1,8-cineole/β-pinene (like the one in this study) in samples from Algeria [23,24] and Mexico; [25] ii) linalool/linalyl acetate in specimens from Palestine [14] and one accession from Tunisia; [13] iii) 1,8cineole/camphor/fenchone in almost all published EO compositions for Brazilian specimens [12,26,27] and Tunisia. [11,15] Linalool and its acetic ester were commonly reported as main constituents in L. angustifolia Mill.…”

“…Our profile was one of the richest among those present in literature [11,29] and 1,8‐cineole (10) was confirmed as the main compound in samples coming from Morocco, [19] Tunisia, [11,15] Algeria, [30] and Brazil [3,12] . β‐Pinene (6) was well represented, in association with its isomer α‐pinene (2), in samples of different origin [22] .…”

“…Our profile was one of the richest among those present in literature [11,29] and 1,8-cineole (10) was confirmed as the main compound in samples coming from Morocco, [19] Tunisia, [11,15] Algeria, [30] and Brazil. [3,12] β-Pinene (6) was well represented, in association with its isomer α-pinene (2), in samples of different origin. [22] In other profiles, among the dominant compounds, there were camphor, [10,13,16,17,31] fenchone, [10 -12] linalyl acetate, and linalool (15), [13,14] all accounting for low amounts or lacking in our samples.…”

“…[9] On the contrary, several contributions focused on the composition of the essential oils (EOs) obtained from samples coming from different regions in the world. [3,[10][11][12][13][14][15] However, there are no studies on plants cultivated in Italy.…”

“…Only Chinese authors reported the analysis of aromatic volatiles emitted by the whole plant with the aim of evaluating its potential antioxidant activity on mice kept in conditions of oxygen deficiency [9] . On the contrary, several contributions focused on the composition of the essential oils (EOs) obtained from samples coming from different regions in the world [3,10–15] . However, there are no studies on plants cultivated in Italy.…”