By the combination of methods of chemical analysis with methods of sensory analysis the odour-active substances of deep-fried poultry could be identified and quantified for the first time. Substances corresponding to characteristic sensor-active odours were tested with different sensors by the HRGCC/SOMMSA-method, resulting in correlations of substance/sensor; this allowed optimisation of sensor materials in order to detect aroma compounds. Results were used in a practical experimental setup with the objective of measuring the formation of aroma compounds during deep-frying of poultry. Variation of temperatures and selection of suitable metal oxide surfaces resulted in modification of the semiconductor gas sensors, with particular regard for sensitivity/selectivity in order to allow building a sensor array with a very high potential for "selective" aroma compound detection in food. Finally the online detection of formation of aroma compounds during thermal processing of food was achieved.
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By the combination of methods of chemical analysis with methods of sensory analysis the odour-active substances of deep-fried poultry could be identified and quantified for the first time. Substances corresponding to characteristic sensor-active odours were tested with different sensors by the HRGCC/SOMMSA-method, resulting in correlations of substance/sensor; this allowed optimisation of sensor materials in order to detect aroma compounds. Results were used in a practical experimental setup wi...
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