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Volatile compounds associated with the spoilage of normal and high pH vacuum-packed pork
Authors:Robert A. Edwards  Richard H. Dainty
Abstract:Pork of normal (5.5–5.6) and high (6.3–6.6) pH was stored in vacuum packs at 5°C until spoiled. At spoilage the bacterial flora of the normal pH meat was dominated by lactic acid bacteria, that of the high pH meat by Gram-negative organisms. Volatile compounds in the packs were analysed by a headspace entrainment technique and gas chromatography-mass spectrometry. Major differences between the two types of meat were confined mainly to a series of sulphur-containing compounds which were more numerous, and present in higher concentrations, in the headspaces above high pH meat.
Keywords:Volatiles  spoilage  pH  vacuum packs  pork
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