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Antifungal activity of the essential oil of Thymus capitellatus against Candida, Aspergillus and dermatophyte strains
Author(s) -
Salgueiro Lígia Ribeiro,
Pinto Eugénia,
Gonçalves Maria José,
Costa Inês,
Palmeira Ana,
Cavaleiro Carlos,
PinaVaz Cidália,
Rodrigues Acácio Gonçalves,
MartinezdeOliveira José
Publication year - 2006
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.1610
Subject(s) - linalyl acetate , borneol , linalool , dermatophyte , chemistry , essential oil , microbiology and biotechnology , aspergillus , chemotype , minimum inhibitory concentration , candida albicans , food science , biology , antimicrobial , medicine , alternative medicine , traditional chinese medicine , pathology
The antifungal activity of Thymus capitellatus oils on Candida, Aspergillus and dermatophyte strains were studied. The essential oils were obtained from the aerial parts of the plants by water distillation and analysed by GC and GC–MS. Three chemotypes were characterized: 1,8‐cineole (47.5%), 1,8‐cineole/borneol (28.8% and 19.5%, respectively) and 1,8‐cineole/linalyl acetate/linalool (27.5%, 20.0% and 17.0%, respectively). The minimal inhibitory concentration (MIC) determined according to the NCCLS protocols (M27‐A and M38‐P) and the minimal lethal concentration (MLC) were used to evaluate the antifungal activity of the oils against Candida (seven clinical isolates and three ATCC type strains), Aspergillus (five clinical isolates, two CECT and two ATCC type strains) and five dermatophyte clinical fungi strains. The oils exhibited antifungal activity for the dermatophyte strains, with MIC values of 0.32–1.25 µl/ml; the chemotype 1,8‐cineole/linalyl acetate/linalool proved to be more active. The highest antifungal activity of this oil can be associated with the contribution of the linalyl acetate. In the other hand, all samples showed low activity against Candida and Aspergillus strains. Copyright © 2006 John Wiley & Sons, Ltd.