Advances in the development of a novel method for the detection ofFusarium graminearum employing mid-infrared spectroscopy are described. The dried and ground sample was sieved and the fraction with particle sizes between 250 and 100 μm was used for spectroscopy. The sample was pressed against a diamond ATR-crystal, mounted in the sample chamber of an FT-IR spectrometer and the mid-infrared absorption spectrum was recorded. The most prominent features in the spectrum were identified as protein, lipid and carbohydrate bands, which are changed by fungal infection. Multivariate data analysis was employed to detect the spectral changes: Principal component analysis (PCA) of mean centred data proved to be the most efficient method for the separation of contaminated maize from uninfected samples using the first two principal components. Ergosterol and the toxin deoxynivalenol (DON) served as reference parameters and were obtained from each sample using conventional analytical techniques. Samples with a toxin content of as low as 309 μg/kg could be separated from blank samples, which is well in the range of natural contamination. Investigated concentration ranges were 0.73–4.5 mg/kg for ergosterol and 0–2.6 mg/kg for DON. The percentage of correctly classified samples was between 75 and 100%.
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Weingärtner J, Krska R, Praznik W, Grasserbauer M, Lew H (2000) Use of Mycosep Multifunctional Clean-up Columns for the Determination of Trichothecenes in Wheat by Electron-capture Gas Chromatography. Fres. J. Anal. Chem, 357: 1206–1210
Schwadorf K, Müller H (1989) Determination of Ergosterol in Cereals, Mixed Feed Components, and Mixed Feeds by Liquid Chromatography. J. Assoc. Off. Anal. Chem. 72, 3: 457–462
L’association francaise de normalisation (AFNOR) (1991) Détermination de la teneur en ergostérol. NF V 18–112
Gordon S H, Schudy R B, Wheeler B C, Wicklow D T, Greene R V (1997) Identification of Fourier Transform Infrared Photoacoustic Spectral Features for Detection ofAspergillus Flavus Infection in Corn. Intern. J. of Food Microbiology 35: 179–186
Greene Richard V, Gordon S H, Jackson M A, Bennet G A (1992) Detection of fungal contamination in corn: potential of FTIR-PAS and -DRS. J.Agric.Food Chem. 40: 1144–1149
Kos G, Lohninger H, Krska R (2001) Using Mid-Infrared Fourier-Transform-Spectroscopy with Attenuated Total Reflection (FT-IR/ATR) as a Tool for the Determination ofFusarium Graminearum on Maize. My-cotoxin Research, 17A, 1: 102–106
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Kos, G., Lohninger, H. & Krska, R. Classification of maize contaminated withFusarium Graminearum Using Mid-infrared Spectroscopy and Chemometrics. Mycotox Res 18, 104–108 (2002). https://doi.org/10.1007/BF02946074
- fusarium graminearum
- infrared spectroscopy