Conclusion
In light of the results of the study, it can be assumed that both
pectin and protein, as well as phenol molecules may strongly increase
immediate turbidity and haze formation in pomegranate
juice, during cold storage in darkness at 4 C for up to 14 days. The
data showed that although the pectinolytic and proteolytic treatments
did not modify the total amount of pectins, proteins and
phenols, they affected the haze-forming activity of turbiditycausing
molecules. It was observed that a synergic clarifying effect
of the pectinase and protease activity took place in the juice
immediately after the enzymatic treatment (day 0) and was
recorded throughout the residual storage time, showing the best
results in terms of the turbidity levels of the juice and potential
haze formation. Considering that the intensity of the shade of red in
addition to clarity are important sensorial attributes which provide
quality information for human perception, it is important to note
that this kind of enzymatic clarification treatment did not affect
anthocyanin composition and juice color.