Affiliation:
1. Department of Pharmacognosy, University of Szeged, Eötvös u. 6, 6720 Szeged, Hungary
2. Institute of Clinical Microbiology, University of Szeged, Semmelweis u. 6. 6725 Szeged, Hungary
Abstract
Essential oils from herbs and roots ofConyza canadensis(horseweed), collected in Hungary, were obtained by hydrodistillation. The chemical compositions of the oils were analysed by combination of GC and GC/MS. The major constituent of the oil obtained from the aerial parts of horseweed was limonene (78%), while the main component of root oil was 2Z,8Z-matricaria ester. The antimicrobial activities of the oils were tested on Gram-positive (Enterococcus faecalis,Staphylococcus aureus, andStreptococcus pyogenes), Gram-negative (Escherichia coli, Pseudomonas aeruginosa) bacteria, reference fungal strains, and fungal strains isolated from patients (Candida,Cryptococcus,Trichophyton,Rhodotorula, andAspergillus) by agar disc diffusion and broth dilution methods. None of the oils showed any activity against the tested bacterial strains, but exhibited moderate-to-strong activity against all fungi with the only exception ofA. fumigatus. The highest zone of inhibition was observed in case ofCryptococcus neoformansandTrichophyton interdigitalis
Funder
Hungarian Scientific Research Fund
Subject
General Environmental Science,General Biochemistry, Genetics and Molecular Biology,General Medicine
Cited by
23 articles.
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