| dc.description.abstract | HENDRA SAMUEL MARPAUNG: The Effect of Drying Time and Heap Thickness
on Drying of Sweet Potatoes Using Tray Type Solar Dryer, supervised by AINUN
ROHANAH and RISWANTI SIGALINGGING.
Drying of sweet potatoes in tray tipe solar dryer to make sweet potato
flour can be a solution of food problem in Indonesia as the productivity of sweet
potatoes is very high and can be made into various of type carbohydrate source of
food to substitute rice and grist, and also can reduce fuel consumption. The
research was performed in May-June 2012 at Agricultural Engineering
Laboratory, Fakultas Pertanian USU using factorial completely randomized
design with two factors i.e: drying duration: 2,3, and 4 days and heap thickness :
0.5, 1, and 1,5 cm. Parameters analysed were moisture content, yield, and
organoleptic values of colour.
The results showed that the drying time had highly significant effect on
moisture content and yield, and had significant effect on organoleptic value of
colour. Heap thickness had no significant effect on moisture content, but had
highly significant effect on yield and organoleptic value of colour. The interaction
of drying time and heap thickness had highly significant effect on all parameters.
The best result was obtained in the combination of drying time of 2 days and heap
thickness of 1 cm. | en_US |
