Sheard et al. (1999) studied the injection of polyphosphate solutions into pork to improve juiciness and tenderness after cooking. Two injection levels (5 and 10%) and three concentrations of STPP (0, 3 and 5%) were used in 64 pork loin samples to assess the influence of STPP injection on the eating quality of pork steaks cooked by grilling to a centre temperature of 72.5 or 80.0°C. The results of sensory evaluation in this study show that pork steaks containing 5% STPP, injection level 10% and cooked to 80°C were tenderer than, but as juicy as steaks without STPP.