3.2. Pizza crusts with reduced sodium contents
One of the most frequently applied strategies for sodium reduction is the so-called “reduction by stealth” in small increments (5%) over a longer period of time (Girgis et al., 2003). Using this strategy requires knowledge of noticeable differences in salt content. These were determined in pizza crusts by 2-AFC tests comparing the standard recipe to recipes with a 7%, 10%, 16% and 23% reduction in sodium content, respectively. While the 7% and 10% sodium reductions were not significantly discriminable from the standard amount (p > 0.20 and p = 0.10), the 16% and 23% reductions tasted significantly less salty (p = 0.001) (Table 1). A one-step sodium reduction by up to 10% was thus possible in pizza crust without recognition by the panel.