Abstract
Lavandula dentata L., popularly known as lavender, is considered to be a medicinal plant that has great economic potential. The aims of the present study were to characterize the morphology of L. dentata grown in Paraíba do Sul, Rio de Janeiro, Brazil and determine the content and chemical composition of its essential oil. Morphology of the plant was determined using the optical microscope, digital calliper and measuring tape. The fresh plant material characteristics consisting of the branches, leaves, and inflorescence were described. The essential oil was obtained by hydrodistillation and analyses chemical characteristics were performed by gas chromatography (GC) and gas chromatography coupled to mass spectrometry (GC/MS). Our study shows a large number of non-glandular trichomes were identified, as well as two types of glandular trichomes, including capitate and peltate glandular trichomes. This work achieved high essential oil content which were related to vegetable biomass. The major constituents found in the essential oil from L. dentata were the monoterpenes: eucalyptol - 1.8 cineol (39.43%), camphor (20.11%), and fenchone (18.40%). Thus, it was possible to characterize the morphology and chemical composition of L. dentata.
Highlights
IntroductionLavandula dentata L. (lavender), belongs to the Lamiaceae family and is native to eastern and southern Spain
Lavandula dentata L., belongs to the Lamiaceae family and is native to eastern and southern Spain
Fresh adult plant material consisting of the branches, leaves, and inflorescence were used to verify growth habit, type of branching, classification of the trichomes and epidermis, morphology, and cell arrangement, which was analyzed in triplicate and repeated at least twice
Summary
Lavandula dentata L. (lavender), belongs to the Lamiaceae family and is native to eastern and southern Spain. (lavender), belongs to the Lamiaceae family and is native to eastern and southern Spain. It is well adapted to tropical climates and can be grown at lower latitudes. Most lavender species exclusively grow in Mediterranean climates because they prefer sunny. A number of lavender species with distinct characteristics are widely distributed globally (Biasi & Deschamps, 2009). In Brazil, lavender cultivation, despite being insipient, has attracted the attention of producers because it can potentially be used in herbal medicines, aromatherapy, cosmetics, perfumery, and cooking. There is a tourist demand for the essential oil and ornamental lavender species. There is a lack of basic knowledge about
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