Fig. 5 displays the effects of CF, IQF and CSF methods and
frozen storage period on the fresh Barhi fruit sugars. For the
fruits frozen by CSF method and stored at 20 C, the proportion
of glucose and fructose has increased substantially during
the first three months of frozen storage. This proportion
decreased considerably during the following three months
and continued to decrease at a lower rate until the end of
the frozen storage period. Whereas, sucrose proportion greatly
declined by about 81% of its initial value at the end of the first
three months. The sucrose has gradually faded or disappeared
completely until the end of the storage period. The disappearance
of or decomposition of sucrose is probably due to enzymatic
activity in the fruit.