3.3. Pizza crusts with a replacement of 30% NaCl by KCl
The partial replacement of NaCl by KCl has been reported (Busch et al., 2013 and Kilcast and den Ridder, 2007), but the replacement level is typically limited to 10–50% because of the metallic-bitter off-flavour of KCl. In this study, 30% of NaCl were replaced by KCl and both the saltiness and bitterness were assessed by 2-AFC tests. When the pizza crust with 30% KCl was compared to the standard (100% NaCl), the panel failed to recognize a significant difference between the two pizza samples in terms of saltiness (p > 0.20) (Table 1) and bitterness (p = 0.20). Therefore, a replacement of 30% NaCl by KCl is another possibility for sodium reduction in pizza crust.