Metabolomics Analysis of the Spoilage Characteristics of Pseudomonas fragi and Aeromonas salmonicida Co-Culture in Refrigerated Grass Carp

Pseudomonas fragi and Aeromonas salmonicida are major spoilage microorganisms in re- frigerated grass carp. This study systematically investigated the physicochemical and metabolomic characteristics of chilled grass carp that were artificially inoculated with P. fragi and A. salmonicida in mono- and co-culture. The results indicated that P. fragi was the dominant bacterium in the co-culture of grass carp. The P. fragi-inoculated group exhibited significantly higher levels of total volatile...