Extrusion of cranberry pomace resulted in significant losses of
total anthocyanins. However, increases in flavonols and low DP
(1-2) procyanidins and a decrease in high DP (4-9) procyanidins
were observed. The antioxidant capacity of the extrudates increased at higher temperatures. Applications of this research
could provide a use for the waste product of cranberry juicing,
which currently has little functionality due to its low protein
content and low pH. Furthermore, it could lead to the improved
functionality of polyphenolic compounds, particularly procyanidins and flavonols, of cranberry pomace. However, means of
curbing the loss of anthocyanins due to heat need to be evaluated.
The resulting product could be incorporated into a dietary
supplement or explored as a functional snack food.