Process Development for Spray Drying of Ber ( Ziziphus jujube L.) Juice

摘要

A study was conducted using Lab Spray Dryer (LU-222 Advanced Model, Twin cyclone) to produce spray-dried Ber powder. Thirty two experiment were conducted keeping five different operating variables of spray dryer i.e., inlet temperature (170, 180, 190, 200 and 210°C), aspirator blower capacity (40, 50, 60, 70 and 80%) and feed pump capacity (9, 12, 15, 18 and 21%) and feed parameters i.e., maltodextrin concentration (4, 6, 8, 10 and 12%) as encapsulating material upon the bio chemical properties ( moisture content , acidity and ascorbic acid ) of powder were observed. Analysis of experimental data i.e., Ber powder properties and process parameters yielded best quality ( moisture content 3.9%, acidity 0.55% and ascorbic acid 38.4 mg/100 g) of powder at inlet air temperature 190°C, aspirator blower capacity 60%, feed pump capacity 15%, encapsulating material 8%.