Tilapia Nilotica Drying with Solar Greenhouse Dryer

Abstract

The objective of this research was studied performance of a dryer and difference preparation of Tilapia Nilotica on dried to product. The solar greenhouse dryer size is width 3.0 m., length 4.0 m., height 2.3 m. and install ventilation fan of 3.4 watts. Tilapia Nilotica small size was prepared with 2 patterns including flat and non-flat and marinated with seasonings about for 1 hour. Then sample fish was dried in the solar greenhouse dryer and natural sun 9:00 a.m. – 5:00 p.m. for 2 days. The moisture content, water activity and color value were determined. The results showed that the temperature of the solar greenhouse dryer is 12.8 ºC higher than the ambient temperature. Relative humidity of the air inside less than ambient 13.0 %RH. The solar greenhouse dryer can be reduced moisture content of Tilapia Nilotica from 80 %w.b. to 25.8 %w.b. which is more than natural sun 6.2 %w.b. The preparation difference of Tilapia Nilotica is significant different to moisture content and water activity but not significant different to color value (p<0.05).