Chemical Composition and Biological Activities of The Essential Oil And Anatomical Markers Of Lavandula Dentata L. Cultivated In Brazil

• Main Authors: Barbara Justus, Valter Paes de Almeida, Melissa Marques Gonçalves, Daniele Priscila da Silva Fardin de Assunção, Debora Maria Borsato, Andres Fernando Montenegro Arana, Beatriz Helena Lameiro Noronha Sales Maia, Josiane de Fátima Padilha de Paula, Jane Manfron Budel, Paulo Vitor Farago
• Format: Article
• Language: English
• Published: Instituto de Tecnologia do Paraná (Tecpar) 2018-11-01
• Series: Brazilian Archives of Biology and Technology
• Subjects: Anatomy; Antimicrobial; Antioxidant; Lamiaceae; Quality control; Volatile oil
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100441&lng=en&tlng=en

ABSTRACT Lavandula dentata, popularly known as lavender, is commonly used in traditional medicine for the treatment of digestive and inflammatory disorders. The objective of this study was to analyzed the chemical oil composition, antioxidant and antimicrobial activities of the essential oil and anatomical markers of the leaf and stem of L. dentata cultivated in South Brazil. Essential oil showed an antioxidant activity similar to rutin and gallic acid when analyzed by phosphomolybdenum method. However, by the free radical DPPH and ABTS methods, it showed a slight potential antioxidant. Essential oil presented 1,8-cineol (63%) as major component, antimicrobial activity against Gram-positive, Gram-negative bacteria strains and Candida albicans, by broth microdilution. The anatomical profile provided the following main microscopic markers: hypostomatic leaves; diacytic stomata, thin and striate cuticle; multicellular and branched non-glandular trichomes; capitate glandular trichomes; peltate glandular trichomes; dorsiventral mesophyll; flat-convex shape midrib, truncated on the abaxial side; one collateral vascular bundle in the midrib; square stem shape, angular collenchyma alternated with cortical parenchyma; sclerenchymatic fibers well-developed on the four edges.