The projection of the observations of the five diets studied in the plane defined by the first two PCs is shown in Fig. 1. Each quadrant in the biplot discriminated against one of the sources of added fat. Control diet was located on the lower left-hand quadrant of the figure, close to the SFA and MUFA, tenderness and fat flavour attributes. SBO1 diet was clearly differentiated from the rest of the diets and was positively placed in the upper right-hand quadrant of the figure,
together with PUFA and close to WBSF, fibrousness, acid flavour and n-6/n-3 ratio. CaSPO1 diet was located on the lower right-hand quadrant of the figure, with fat, acid and pork odour and near to WBSF and n-6/n-3 ratio. Animal fat diets were placed on the upper left-hand quadrant, close to IMF, TBARS values and overall liking and juiciness attributes. It is clear that control and SBO1 diets were mainly separated by IMF fatty acids, IMF content, WBSF and flavour and texture sensory attributes.