title: Antibacterial and antioxidant activity of PortugueseLavandula luisieri(Rozeira) Rivas-Martinez and its relation with their chemical composition.
abstract: Lavandula luisieri(Rozeira) Rivas-Martinez is an endemic aromaticLabiataethe Iberian Peninsula, common in semi-arid regions of southern Portugal and southwestern Spain, that produces an active antibacterial essential oil from the leaves and flowers. This work presents the study of the chemical variation in various stages of growth of leaves and flowers ofL. luisieri.It has been found that the essential oils are mainly constituted by 1,8-cineol, camphor, linalool and trans-α-necrodil acetate. It was also studied the total phenol content and the antioxidant activity on leaves and flowers. The ethanol extraction from de leaves contents the highest total phenol, important factor for the antioxidant activity of the plant, extract. It has been studied too, the antibacterial activity againstEscherichia coli, Salmonellaspp. and Staphylococcus aureus. In accordance with the obtained results, the antibacterial activities stand out againstStaphylococcus, of the oil ofL. luisieri(leaves and flowers).
authors: FibEnTech- Materiais Fibrosos e Tecnologias Ambientais, Departamento de Química, Universidade da Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal.
authors: Sofia
authors: S
authors: Pombal
authors: FibEnTech- Materiais Fibrosos e Tecnologias Ambientais, Departamento de Química, Universidade da Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal.
authors: Cleide F
authors: CF
authors: Rodrigues
authors: FibEnTech- Materiais Fibrosos e Tecnologias Ambientais, Departamento de Química, Universidade da Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal.
authors: João P
authors: JP
authors: Araújo
authors: FibEnTech- Materiais Fibrosos e Tecnologias Ambientais, Departamento de Química, Universidade da Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal.
authors: Pedro M
authors: PM
authors: Rocha
authors: FibEnTech- Materiais Fibrosos e Tecnologias Ambientais, Departamento de Química, Universidade da Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal.
authors: Jesus M
authors: JM
authors: Rodilla
authors: Departamento de Química Orgánica, Facultad de Ciencias Químicas, University of Salamanca, Plaza los Caidos s/n, 37008 Salamanca, Spain.
authors: David
authors: D
authors: Diez
authors: Departamento de Química Orgánica, Facultad de Ciencias Químicas, University of Salamanca, Plaza los Caidos s/n, 37008 Salamanca, Spain.
authors: Ángela P
authors: ÁP
authors: Granja
authors: FibEnTech- Materiais Fibrosos e Tecnologias Ambientais, Departamento de Química, Universidade da Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal.
authors: Arlindo C
authors: AC
authors: Gomes
authors: FibEnTech- Materiais Fibrosos e Tecnologias Ambientais, Departamento de Química, Universidade da Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal.
authors: Lúcia A
authors: LA
authors: Silva
keywords: Antibacterial activity; Antioxidant activity; Flavonoid content; Lavandula luisieri; Oil composition; Phenol content