Antibacterial activity of plant extracts and phytochemicals on antibiotic-resistant bacteria
Braz. j. microbiol
; 31(4): 247-256, oct.-dec. 2000. tab, graf
Article
em En, Pt
| LILACS
| ID: lil-299820
Biblioteca responsável:
BR32.1
ABSTRACT
The antimicrobial activity of plant extracts and phytochemicals was evaluated with antibiotic susceptible and resistant microorganisms. In addition, the possible synergistic effects when associated with antibiotics were studied. Extracts from the following plants were utilized Achillea millifolium (yarrow), Caryophyllus aromaticus (clove), Melissa offficinalis (lemon-balm), Ocimun basilucum (basil), Psidium guajava (guava), Punica granatum (pomegranate), Rosmarinus officinalis (rosemary), Salvia officinalis (sage), Syzygyum joabolanum (jambolan) and Thymus vulgaris (thyme). The phytochemicals benzoic acid, cinnamic acid, eugenol and farnesol were also utilized. The highest antimicrobial potentials were observed for the extracts of Caryophyllus aromaticus and Syzygyum joabolanum, which inhibited 64.2 and 57.1 ( per cent) of the tested microorganisms, respectively, with higher activity against antibiotic-resistant bacteria 83.3 ( per cent). Sage and yarrow extracts did not present any antimicrobial activity. Association of antibiotics and plant extracts showed synergistic antibacterial activity against antibiotic-resistant bacteria. The results obtained with Pseudomonas aeruginosa was particularly interesting, since it was inhibited by clove, jambolan, pomegranate and thyme extracts. This inhibition was observed with the individual extracts and when they were used in lower concentrations with ineffective antibiotics.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Plantas Medicinais
/
Técnicas In Vitro
/
Extratos Vegetais
/
Antibacterianos
Tipo de estudo:
Diagnostic_studies
Idioma:
En
/
Pt
Revista:
Braz. j. microbiol
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Brasil