Ocimum selloi Benth, a native plant of Brazil, has medicinal uses as anti-diarrheic, antispasmodic and anti-inflammatory product. The yield of essential oils of the inflorescences, containing flowers and seeds, was 0.6%, and the yield of leaves, collected in two different seasons, was 0.25% (June 2000) and 0.20% (January 2001), respectively. The essential oils of the inflorescences and leaves p...

The essential oils of Peucedanum ruthenicum M. Bieb. (Umbelliferae) leaves, flowers and fruits were prepared by hydrodistillation and analyzed by GC and GC-MS and the composition of the three essential oils were compared. Thirty-three, thirty-seven and thirty-one compounds were identified in leaves, flowers and fruits essential oils representing 89.13%, 88.66% and 76.45% of total oils respectiv...

With therapeutic properties based on their chemical composition, essential oils—extracts from herbs, flowers, and other plant materials—have been used to treat symptoms and diseases for thousands of years. However, the term aromatherapy was not used until French chemist Gattefosse published a text in 1936. Clinical aromatherapy is defined as the use of essential oils for therapeutic purposes th...

The chemical variations of the essential oil from the aerial parts of Laurus nobilis L. (Lauraceae) have been studied. Plant material has been harvested at each phenological status (vegetative, before anthesis, full flowering and seed-bearing). The oils were obtained by hydrodistillation of the air-dried samples. Analysis by GC and GC-MS of the essential oils has allowed to identify 39 compound...

background: medicinal plants are considered new resources for producing agents that could act as alternatives to antibiotics in the treatment of antibiotic-resistant bacteria. the aim of this study was to evaluate the antibacterial activity of 28 plant extracts and oils against four gram-negative bacterial species. methods: experimental, in vitro, evaluation of the activities of 28 plant extrac...

The antimicrobial activity of plant oils and extracts has been recognized for many years. However, few investigations have compared large numbers of oils and extracts using methods that are directly comparable. In the present study, 52 plant oils and extracts were investigated for activity against Acinetobacter baumanii, Aeromonas veronii biogroup sobria, Candida albicans, Enterococcus faecalis...

BACKGROUND To evaluate the antibacterial activity of 21 plant essential oils against six bacterial species. METHODS The selected essential oils were screened against four gram-negative bacteria (Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Proteus vulgaris) and two gram-positive bacteria Bacillus subtilis and Staphylococcus aureus at four different concentrations (1:1, 1:5...

The essential oils of Peucedanum ruthenicum M. Bieb. (Umbelliferae) leaves, flowers and fruits were prepared by hydrodistillation and analyzed by GC and GC-MS and the composition of the three essential oils were compared. Thirty-three, thirty-seven and thirty-one compounds were identified in leaves, flowers and fruits essential oils representing 89.13%, 88.66% and 76.45% of total oils respectiv...

Many essential oils (EOs) of different plant species possess interesting antimicrobial effects on buccal bacteria and antioxidant properties. Eugenia klotzschiana Berg (pêra-do-cerrado, in Portuguese) is a species of Myrtaceae with restricted distribution in the Cerrado. The essential oils were extracted through the hydrodistillation technique using a modified Clevenger apparatus (2 hours) and ...

background & aim: secondary metabolites with bioactive and functional properties in essence of aromatic plants can be useful for improvement of quality and persistence of food as natural preservative.  the aim of this study was to evaluate the in vitro antibacterial of essential oils of some of the medicinal plants collected from chaharmahal va bakhtiari province, iran. experimental: the e...