Untitled - MendelNet 2013 - Mendelova zemědělská a lesnická ...

MENDELNET 2013-2815 Calculated13897DONRMSEC: (0.147e4) Bias: (-0.00204) Corr. Coeff.: 0.87516 factors usedCalibrationValidationCorrectionCross-correctionIgnore-2815 Actual13897Fig. 3: Predictive PLS model for DON – linear regression plot of measured (actual) and estimated(calculated) concentrations (μg.kg -1 )2657 RMSECV31670 Factor10Fig. 4: The PRESS function for DON (6 factors used)The contents of both mycotoxins in samples were very low from undetectable concentration toabout 10 000 μg.kg -1 . The NIR spectroscopy method is applicable mainly for measurement of basiccomponents in samples, as protein, moisture, starch and oil. Nevertheless the possibility to employNIR spectroscopy for detection of low concentration substances is also targeted. Mlček et al. (2013)created calibrations for amino acids in cheese with a concentration about 300 nmol.g -1 . Gaspardo etal. (2012) determined fumonisins B1 and B2 in corn meal with a concentration about 4 mg.kg -1 .Tripathi and Mishra (2009) developed a method for quantification of aflatoxin B1 in red chillipowder in the range of 15–500 μg.kg -1 , which could be used for bulk sorting of the chilli samplesfrom the infected ones before going for any other chemical procedures.637 | P age