Journal of Advances in Food Science & Technology
 

Journal of Advances in Food Science & Technology, ISSN No. : 2454-4213, Vol.: 4, Issue.: 4

Original Research Article

DESIGN, CONSTRUCTION AND PERFORMANCE EVALUATION OF AN AUTOMATED BATCH PASTEURIZER

 

A. AHUMUZA1, E. NABUTUTA1, J. KIGOZI1*, A. ZZIWA1 AND E. SEMPIIRA1

1Department of Agricultural and Bio-Systems Engineering, Makerere University, P.O. 7062, Kampala, Uganda.

Abstracts

The main problems faced by small-scale liquid foods processors in developing countries, Uganda in particular include high business start-up costs and lack of appropriately sized equipment. Therefore, the aim of this study was to design, construct and evaluate a small scale automated pasteurizer; an important equipment in liquid foods industry. The performance of the pasteurizer was tested using freshly prepared fruit juice at a pasteurization temperature of 90°C and holding time of 10 min. The batch pasteurizer had a come-up time of 37 and 78 min from a cold jacket and from a hot jacket respectively, and an output of 92-194 L/hr. The kinetics study of pasteurization showed a decimal reduction time (of 10 min and with the z value of 10°C the batch lethality was 0.062 min. The pasteurizer portrayed significantly high performance and can therefore be recommended for use by the small-scale liquid food processors.

Keywords :

Batch pasteurizer; small scale food processor; lethality; holding time; come-up time.