The of thickness on the moisture content of non - foamed papaya pulp drying at 60 is shown in figure 4
The time taken for drying of non -foamed papaya pulp was 4 h for 2 thick respectively to reach the moisture content 8.7 on dry basis.
From the drying curves, it is noted that the reduction in the moisture content at any point of drying increased with decrease in foam thickness.
This may be due to the fact that moisture migration is higher in smaller foam thickness that greater foam thickness.
The reduction in the moisture content of foamed papaya pulp at any point of time during drying was higher when compared to the non-foamed papaya pulp at all thickness studied.
This is due to enormous increase of liquid-gas interface in the foamed mass.