Production of Off Odours by Isolates from Poultry Skin with Particular Reference to Volatile Sulphides

Poultry skin free from psychrotrophic micro‐organisms was used to assess the abilities of isolates from poultry skin to produce off odours. Pseudomonas group I and II strains were the major off odour producers and the predominant volatile produced was methanethiol. Results obtained using skin as a spoilage substrate were similar to those obtained with leg muscle but a higher proportion of strains produced volatile sulphides from methionine and cystine supplemented media. Addition of glucose to the methionine medium inhibited methanethiol production.