Investigation of the physical properties of tomato powder prepared by spray drying technology

Abstract

The aim of the present investigation was to study the various physical properties of the spray dried tomato powder. The spray drying process was operated at maltodextrin concentration (3%), air inlet temperature (152 0C), feed flow rate (37 ml/min) and blower speed (1300rpm). Moisture content, bulk density, tapped density, flowability and water solubility index of the spray dried tomato powder were analyzed. Powder samples showed moisture activity of 4.40% and water activity of 0.47, which is good for powder stability. Powder samples showed excellent flowing properties with Hausner ratio of 1.18 and Carr index of 12.82%. The reconstitution property (water solubility index) was found to be 92.50%.