Commercial poultry chiller water was extracted by the closed-loop-stripping technique. Extracts were analysed by gas chromatography and mass spectroscopy. Twelve saturated and unsaturated aliphatic aldehydes having 5 to 11 carbons were identified. Hexanal and nonanal were present in approximately equal quantities. Together they constitute about half of the aldehydes found. The identified aldehydes also are the primary autoxidation products of unsaturated fatty acids of chicken lipids. The presence of these aldehydes is indicative of an extensive autoxidation taking place in the chiller. Its effect on the quality and shelf-life of the poultry products is unknown.
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Tsai et al. (1987) studied this question.
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