A metabolite profiling approach for maize (Zea mays) based on gas chromatography/mass spectrometry was applied to the simultaneous detection, identification and quantification of a broad spectrum of non-polar (fatty acid methyl esters, free fatty acids, fatty alcohols, sterols, hydrocarbons) and polar (sugars, sugar alcohols, organic and inorganic acids, amino acids, amines) constituents. The non-targeted method allowed the investigation of the influence of genetics (cultivar, genetic modification), environment (location, season) and input system (conventional, organic) on the chemical composition of maize kernels by means of uni- and multivariate statistics. Based on the GC/MS data, the potential of near infrared spectroscopy (NIRS) was evaluated as tool for the screening of maize samples. The use of GC/MS data as basis for NIRS calibration models allowed the substantiation of differences.
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A metabolite profiling approach for maize (Zea mays) based on gas chromatography/mass spectrometry was applied to the simultaneous detection, identification and quantification of a broad spectrum of non-polar (fatty acid methyl esters, free fatty acids, fatty alcohols, sterols, hydrocarbons) and polar (sugars, sugar alcohols, organic and inorganic acids, amino acids, amines) constituents. The non-targeted method allowed the investigation of the influence of genetics (cultivar, genetic modificati...
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