Effect of propiconazol on amino acid compositions of some yeasts

ABSTRACT

Amino acid pool was extracted from Hansenula anomala, Candida guilliermondii and Rhodotorula rubra grown under aerobic and anaerobic conditions in the presence of different concentrations of Propiconazol [Tilt] used as a fungicide. The levels of free amino acids in these yeasts showed remarkable fluctuations and decreases. Higher changes occurred in both quantitative and qualitative levels of the free amino acid pools when the yeasts under investigation were grown in increasing growth-inhibitory concentrations of Propiconazol. However, it was found that the concentrations of total free amino acids are lower when these yeasts are grown on medium containing a fungicide