Significant losses were observed in the contents of TPC, AA, GSH and
Cys and CUPRAC values in all samples that were dried using the thermal method. There was a statistically
significant difference in the losses of the TPC, AA, and thiol contents between the use of thermal drying
and freeze drying (except Cys in tomatoes) methods. Freeze dried tomato and ginger samples have been
found to have better antioxidant properties.