Shelf life of ready-to-eat meat needs sensory markers, not just safety values

A study of sterilised, vacuum-packed braised chicken shows why ready-to-eat meat products should not assess shelf life solely through conventional microbiological and chemical parameters. The team examined the product over six months at 25 ± 1 °C, using seven comparable production batches. It combined a trained sensory panel, electronic tongue, electronic nose and gas chromatography–ion mobility spectrometry.

Total viable counts remained below 2.0 log CFU/g throughout the storage period. Nevertheless, aroma profile and sensory acceptance changed substantially. The authors attribute deterioration chiefly to lipid oxidation, protein degradation and transformation of aroma compounds formed during cooking; they identified four volatile markers that were particularly informative for tracking this evolution. The finding matters because the model is not chilled fresh meat: it is an ambient-stable product in which quality can be lost before common safety indicators draw attention.

For manufacturers of prepared foods, the practical consequence is clear. Compliant microbiology or total volatile basic nitrogen values alone do not guarantee a satisfactory eating experience. Sensory quality needs its own monitoring system, linked to packaging development, recipe design, thermal treatment and storage specification.