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Survey of sensitivity of twelve yeast genera toward T-2 toxin
Abstract:
A survey was made to detect the sensitivity of 12 yeast genera to T-2 toxin. Seventy-five yeasts isolated from various sources were tested for their susceptibility to T-2 toxin. The MIC of T-2 for these yeasts varied from 1.0 to greater than 8.0 micrograms/ml. Of the yeasts studied, Kluyveromyces fragilis showed the greatest sensitivity, which ranged between 0.5 and 2.5 micrograms of T-2 toxin per ml of culture medium. The roles of incubation temperature, size of the inoculum, and incubation time on the MICs were determined. The results suggest that in comparison with other yeasts, K. fragilis is very sensitive to T-2 toxin.
Insights
Kluyveromyces fragilis yeast exhibits high sensitivity to T-2 toxin, with minimum inhibitory concentrations (MICs) between 0.5 and 2.5 micrograms/ml. This study surveyed 75 yeasts, identifying K. fragilis as particularly susceptible to this mycotoxin.
Area of Science:
- Mycology
- Microbiology
- Toxicology
Background:
- T-2 toxin is a harmful mycotoxin produced by Fusarium species.
- Understanding yeast susceptibility to mycotoxins is crucial for food safety and industrial applications.
- Previous research has not extensively detailed the sensitivity of various yeast genera to T-2 toxin.
Purpose of the Study:
- To determine the sensitivity of 12 yeast genera to T-2 toxin.
- To identify specific yeast species with high susceptibility to T-2 toxin.
- To investigate the influence of incubation parameters on T-2 toxin's minimum inhibitory concentration (MIC).
Main Methods:
- A survey of 75 yeast isolates from diverse sources was conducted.
- Minimum Inhibitory Concentrations (MICs) for T-2 toxin were determined for each isolate.
- The impact of incubation temperature, inoculum size, and incubation time on MICs was evaluated.
Main Results:
- Yeast susceptibility to T-2 toxin varied, with MICs ranging from 1.0 to over 8.0 µg/ml.
- Kluyveromyces fragilis demonstrated the highest sensitivity, with MICs between 0.5 and 2.5 µg/ml.
- Incubation conditions were found to influence the determined MICs.
Conclusions:
- Kluyveromyces fragilis is significantly more sensitive to T-2 toxin compared to other tested yeasts.
- The findings highlight K. fragilis as a potential biomarker or target for T-2 toxin studies.
- Further research into the mechanisms of T-2 toxin sensitivity in K. fragilis is warranted.