A dry infusion process could be used successfully to incorporate
Fe and AA into pumpkin tissue. It was found that the addition of Fe
or AA promoted osmotic dehydration in pumpkin and water loss
during the subsequent air drying process.
The presence of Fe or AA intensified color differences of the
systems when compared with the control system (unfortified) and
this was mainly detected through the Chroma evaluation. The dry
infusion with Fe and AA with subsequent air drying significantly
decreased the value of the Chroma parameter of the pumpkin
matrix with respect to the value for the unfortified system with the
exception of product obtained through the impregnation in a
formulation containing 0.216 g/kg of Fe and 0.80 g/kg of AA (system
6), for which the color after the drying process was similar to the