MEDICINAL PLANTS FROM KAZAKHSTAN AND ARGENTINA: ANTIFUNGAL ACTIVITY OF THEIR ESSENTIAL OILS

SAMPIETRO, D. A.; LIZARRAGA, E.; IBATAYEV, ZH.A.; OMAROVA, A.; SULEIMEN, YE; CATALAN, C. A. N,

Tucuman

Congreso; THIRD JOINT MEETING OF THE BIOLOGY SOCIETIES OF ARGENTINA; 2015

Sociedades Argentinas de Biología

Plant essential oils are usually considered with low toxicity and with a reduced impact on the environment. Some of them are biostatics or biocides, with low ability to induce microbial resistance. The aim of this work was to evaluate the composition and antifungal activity of essential oils from native medicinal plants of Argentina and Kazakhstan. These oils were obtained by hydrodistillation from the aerial parts of Acantholippia deserticola, Artemisia proceriformis, Achillea micrantha and Libanotis buchtormensis. They were analyzed by gas chromatography coupled to mass spectrometry and the antifungal effect was evaluated by the microdilution method in YES medium. The main constituents of the essential oils were a-thujone (66.5±0.2%), and trans-sabinylacetate (12.1±0.2%) in A. deserticola,b-thujone (66.9±0.4%) in A. proceriformis, 1,8-cineole(26.9±0.5%), and camphor (17.7±0.3%) in A. micrantha and cis-b-ocimene (23.3±0.3%), and trans-b-ocimene (18.4±0.2%) in L. buchtormensis. The fungal susceptibility was Septoria tritici and S. glycines (MIC100=0.70-2.70 mg/ml) >Fusarium verticillioides, F. graminearum and Aspergillus carbonarius (MIC100=2.70-10.60 mg/ml) and A. niger (MIC100=5.31-21.20 mg/ml). The essential oil of A. deserticola showed the highest antifungal activity. Further research is needed to establish the safety and real potential of the essential oils from A. deserticola as botanical fungicides.