capacity to eliminate several different reactive oxygen species keep the membrane-bound
antioxidant a-tocopherol in the reduced state, act as a cofactor
maintaining the activity of a number of enzymes it also appears to be the substrate for
oxalate and tartrate biosynthesis and has a role in stress resistance.
Existing data pertain mainly to investigations
into the changes of L-ascorbic acid during convective
drying of fruits. The retention of L-ascorbic acid during fruit drying
is a function of process conditions. AC is seriously affected by a high
drying temperature. Furthermore,
we showed that the pulping of cranberries before drying leads to a
lower degradation of AC during freeze drying.