The total chlorophyll shows a significant degradation in
processed samples (Table 3) compared with fresh beans,
except minimal blanching treatment (120 s) at zero storage.
This degradation is attributed to: 1) Blanching promotes the
breakdown of the organelles that contain chlorophyll, causing
its spread in the cell, and thus this pigment is more prone to
degradation, and 2) Transformation of chlorophylls in pheophytins
(non determined in present study) during blanching
and frozen storage (Bahc¸eci et al., 2005).