Different genomic repertoires are associated with beef spoilage under aerobic conditions or under vacuum. Ward-linkage clustering based on the Spearman’s correlation coefficients of the proportion of the KEGG pathways identified in the beef samples. The color scale represents the scaled abundance of each variable, denoted as Z-score, with red indicating high abundance and blue indicating low abundance. Columns are colored according to the type of packaging: aerobic (orange) or under vacuum (green). Rows are colored according to the higher KEGG classification. In the sample labels, A, C, D, and F indicate meat chops from the four different retails; air, meat stored aerobically; vac, meat stored under vacuum.