The enzymatic activity of both polyphenol oxidase (PPO)
and peroxidase (POD) in Barhi fruits throughout frozen storage
period (9 months) is shown in Fig. 4. It is evident from this
figure there is an increase in the activity of both enzymes in the
three freezing methods, but the increase in CSF is greater. This
may be due to the enzymatic activity in the fruits as a result of