to changes in the fruit due to solubilization and enzymatic degradation which are considered to be the key processes responsible for the softening of fruit during ripening. Structural changes that occur in the middle lamella and primary cell wall during ripening result in cell separation and softening of the tissues. The molecular components of primary walls are modified during fruit ripening by the temporally and spatially regulated action of endogenous enzymes.

Similarly to their role in plants, pectinases break down pectin during