The batter was
then divided into four batches which were added with different
concentrations of nitrate/nitrite dissolved in water (1% of the formula):
1) 150 mg/kg KNO3 and 150 mg/kg NaNO2 (high nitrate/
nitrite batch, HN); 2) 112.5 mg/kg KNO3 and 112.5 mg/kg NaNO2
(25% reduction: medium nitrate/nitrite batch, MN); 3) 75 mg/kg
KNO3 and 75 mg/kg NaNO2 (50% reduction: low nitrate/nitrite
batch, LN) and 4) a control batch with no nitrate/nitrite (C).