PENGARUH SUHU DAN VARIASI TATA LETAK RAK TERHADAP KINERJA PENGERING KERUPUK SINGKONG (SERMIER) TIPE KABINET

Drying sermier are generally carried out by method of direct solar drying. Direct solar drying has many disadvantages. Disadvantages of solar drying such as sermier can be contaminated by environmental conditions that are not necessarily hygienic. Direct solar drying process is very dependent upon the weather. limited land for sermier drying process is also one of the disadvantages of direct solar drying. Drying sermier using the cabinet dryer is carried out by exhalation of forcibly heated air is one alternative for the overcome the disadvantages of direct solar drying. This research was aims to identify and analyze the influence of air temperature and the layout of drying rack variations and their influence on the decreases sermier water content during the drying process. The characteristic of sermier drying results using the cabinet dryer were also analyzed to correct drying process using the cabinet dryer. Grated cassava weighed as much as 100grams then flattened in the tray and then steamed for 5 minutes. Steamed grated cassava that has been laid out in a drying rack, drying is accomplished by varying the layout of the shelf and air temperature in the drying chamber. Layout variations in applied in this study are TL1, TL2 and TL3. Meanwhile, the temperature variation which applied to the drying chamber at 50o C, 60o C, and 70o C. Sermier weight loss was measured by weighing the samples every 1 hours. Initial water content and final water content was analyzed using the thermogravimetry method. Decreased in the sermier water content during the drying process and weight loss of sermier used to determine the value of the drying rate (k). Drying sermier using cabinet dryer is able to eliminate the initial moisture content of 65,