Seaweed Drying Process Using Tray Dryer with Dehumidified Air System to Increase Efficiency of Energy and Quality Product

International Conference on Food Science and Technology

Pradana, G.B.^1 ; Prabowo, K.B.^1 ; Hastuti, R.P.^2 ; Djaeni, M.^3 ; Prasetyaningrum, A.^3

Undergraduated in Department of Chemical Engineering, Faculty of Engineering, University of Diponegoro, Jl. Prof. Soedarto, Tembalang, Semarang

50239, Indonesia^1

Master Program, Department of Chemical Engineering, Faculty of Engineering, University of Diponegoro, Jl. Prof. Soedarto, Tembalang, Semarang

50239, Indonesia^2

Department of Chemical Engineering, Faculty of Engineering, University of Diponegoro, Jl. Prof. Soedarto, Tembalang, Semarang

50239, Indonesia^3

关键词: Air dehumidification;    Air temperature;    dehumidification;    Dehumidified air;    Drying temperature;    Physiological properties;    Quality product;    Swelling capacities;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/292/1/012070/pdf
DOI  :  10.1088/1755-1315/292/1/012070

来源: IOP

【 摘 要 】

Seaweed, one of the marine resourceshas a high economic value but easily damaged in fresh condition. Drying method using air dehumidification system is an effort decreased moisture content to prevented using high drying temperature which causes degrading quality. The process of drying seaweed with air dehumidification system using silica gel adsorbent becomes an option to decreased efficiently drying process. The purpose of this study was to examine the drying time and temperature of the moisture content, the rate of drying, energy efficiency, and the physiological properties of the dry product. Seaweed is dried in a tray dryer at 40°C, 50°C, 60°C, and 70°C for 2, 3, and 4 hours. The water content in seaweed is measured every 30 minutes. Seaweed water content according to SNI is obtained at drying for 4 hours at 50°C, 4 hours at 60°C, 2, 3 and 4 hours at 70 °C. The increase in drying temperature is directly proportional to the high drying rate that occurs while over time the drying rate will decrease. At the optimum air temperature and drying time, the highest efficiency of tray dryer is obtained during drying for 4 hours at 50°C that is 91.50%. The highest swelling capacity value is owned by the dried seaweed product with a temperature of 50°C for 4 hours. Best condition in drying process of seaweed is used temperature 50°C at 4 hours.