In order to study the effect of product
thickness on IR blanching, carrot slices of thickness 5 and
10 mm were blanched under similar processing conditions.
Fig. 3 shows the kinetics of peroxidase inactivation in samples
having different thickness. An exponential decrease in peroxidase
activity was observed in both the cases. As expected,
under similar conditions of blanching, thinner slices (5 mm)
were blanched quickly (10 min), as compared to thicker slices
(15 min for 10 mm).