Bread samples color reaction with potassium iodide Regulatory (NAFDAC) Status Quantity of potassium bromate found (μg/g) A Light Purple Nil  2.3600 ± 0.010 B Light Purple Nil 2.7600 ± 0.031 C Light Purple Registered 2.7600 ± 0.041 D Light Purple Registered 2.4600 ± 0.001 E Purple Registered 4.4330 ± 0.104 F Light Purple Nil 2.4600 ± 0.001 G Purple Registered 4.7333 ± 0.007 H Light Purple Nil 2.5600 ± 0.021 I Purple Registered 3.8990 ± 0.014 J Light Purple Registered 2.6600 ± 0.031 K Dark Purple Registered 12.660 ± 0.003 L Light Purple Registered 2.5500 ± 0.010 M Purple Registered 3.7666 ± 0.033 N Purple Registered 4.3333 ± 0.012 O Dark Purple Registered 8.7770 ± 0.003 P Dark Purple Registered 11.3300 ± 0.003 Q Light Purple Registered 2.5400 ± 0.011 R Purple Registered 3.4530 ± 0.022 S Purple Registered 3.7666 ± 0.001 T Purple Registered 4.3277 ± 0.101 U Purple Registered 2.9333 ± 0.004 V Purple Nil 2.6533 ± 0.004 W No color change Nil 1.1200 ± 0.006 X Light Purple Nil 2.4200 ± 0.021 Y No color change Nil 1.0101 ± 0.116 Z Light purple Registered 2.7600 ± 0.041

Table 1: Quantitative determination of potassium bromate in some bread samples