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B. Lendl:
"Mid-IR Spectroscopy: A versatile analytical technique for wine production and wine characterization";
Hauptvortrag: InVino, Graz (eingeladen); 21.07.2011 - 23.07.2011.

MID-IR spectroscopy measures vibrational and rotational transitions in molecules and can be applied to solid, liquid as well as gaseous samples. The recorded mid-IR spectra contain useful molecular specific information which can be used for quantitative and qualitative analysis. Mid-IR spectroscopy not only allows for the simultaneous quantification of the concentration of several analytes, it is also a powerful analytical technique for sample classification. Due to its non-destructive character it can be used to study dynamic processes such as bio-ligand interactions. This presentation will provide an overview of the current capabilities of the technique by showing examples in the field of quantitative wine analysis, wine classification based on the analysis of the hydrophobic fraction of the wine and measurement of wine astringency by probing protein- cannin interactions using state-of-the-art Fourier transform infrared spectrometers. In addition, recent instrument developments which will lead to an increase in the analytical capabilities of modern mid-IR spectroscopy including portable and rugged tunable Mid-IR lasers as a well as ultrasound enhanced mid-IR fiber optic sensors for in-line bioprocess monitoring will be introduced.