Spray drying of beet root juice using different carriers

Abstract

The present work describes the process of spray drying of betalain dye from red beet roots using different carriers. The carriers used are malto dextrine, gum acacia and soluble starch. Effect of these carriers, in varying percentages, with freshly extracted beet root juice was studied during spray drying. The chamber temperature of spray drier was maintained in the range of 150°-165°C. These studies showed that with decrease in percentage of carriers in the juice, the percent yield of betalains increased. This was observed by optical density and betalain content estimation. The shelf life studies of this spray dried betalain dye powder, over 180 days showed that the dye is quite stable in the temperature range of - 4°C to 20°C.