Pectinase and protease effects on pectins, proteins, and phenols
The results show that pectin, protein and total phenol amounts
were not sensitive to pectinase and protease enzyme treatments
(Table 2). The analyses carried out on pectins, proteins and phenols
during the storage period did not show significant differences
among the various enzymatic treatments. Therefore the amount ranges were similar in all cases including the control sample. Significant
reductions or increases in the levels were not observed
during the 14 days of storage, in which, pectin, protein and phenol
total contents ranged from 867 to 1238 M, 0.63e0.81 g/L (as BSA
equivalent) and 2.4e2.7 g/L (as gallic acid equivalent), respectively.
Thus indicating that enzymatic treatment did not affect their total
amount. Moreover, it is important to note that the total phenol level
was not affected by enzymatic treatments of this kind, which is in
contrast to what was observed in fruit juices clarified with fining
agents, where phenol depletion occurred