Within the framework of this thesis, a Real Time (RT) multiplex PCR assay for the quantitative detection of Alternaria species and Phoma betae on sugar beet seed was developed. Furthermore, a RT multiplex PCR assay for detection of Fusarium species on malt was validated. In addition, an isolation and purification procedure for the DNA of the investigated sample material was developed. Using this methodology in combination with the assay for the detection and differentiation of Fusarium species on 273 barley and wheat malt samples were analyzed. The measured values were then compared with the gushing tendency and mycotoxin level of the malt sample. A direct relationship between gushing tendency and Fusarium contamination could not be found. By contrast, it was observed that beyond a certain load index, the DON concentration of the sample increases significantly. Therefore this method is suitable for rapid screening of malt samples in order to identify potentially high mycotoxin contaminated batches.
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Within the framework of this thesis, a Real Time (RT) multiplex PCR assay for the quantitative detection of Alternaria species and Phoma betae on sugar beet seed was developed. Furthermore, a RT multiplex PCR assay for detection of Fusarium species on malt was validated. In addition, an isolation and purification procedure for the DNA of the investigated sample material was developed. Using this methodology in combination with the assay for the detection and differentiation of Fusarium species o...
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