The effect of pH values (5.5, 6.5 and 7.5) on the degradation
of chlorophyll a and chlorophyll b in green peas
in the 70–100 C blanching temperature range was investigated.
The logarithms of chlorophyll a and chlorophyll b
remaining in green peas versus blanching time were plotted
for each pH value. A linear relationship was obtained,
demonstrating that degradation of chlorophylls a and b
followed a first-order kinetic model. The reaction rate constants
of chlorophyll a and chlorophyll b are listed in
Tables 2 and 3, respectively.
Chlorophyll a and chlorophyll b showed similar trends
in different pH conditions. It was observed that the degradation
rate of chlorophyll a and chlorophyll b accelerated
as pH decreased. The half-life values (t1/2) also confirmed