The studies based on
the effect of pH on the browning reactions have been
carried out at high temperatures in a short time
(Ashoor and Zent, 1984; Buera et al., 1987). The
lower limit of browning was in a pH range of 4 and
6 in most of these studies. Because of modelling of
actual minced pepper in this study, the pH is out of
the range compared to the previous studies. However
long term storage studies made it possible to observe
the change in the browning at such low pH values
from 3 to 4. Even if the pH values are lower and the
range is narrower compared to the studies in the literature, increase in the browning is apparently higher
at higher pH values. It is the natural result of having
less amount of unprotonated amino groups at lower
pH values. Because the larger the percent of any of
the amino acids that are in the unprotonated form
means more moles of amino acid can react with reducing sugars (Labuza and Baisier, 1993)