A study was conducted using Pilot Spray Dryer -Two- Flow nozzle, counter- current, One cyclone- to produce spray- dried Barberry powder. Twenty experiment were conducted keeping three different operating variables of spray dryer i.e., inlet temperature -160, 175 and 190°c-, feed rate -34, 36 and 38 ml/min- and feed parameter i.e., ratio dry matter weight of maltodextrin and the dry matter weight of barberry juice -1.1, 1.2 and 1.3- upon the biochemical properties -moisture content, water activity, total phenol content, DPPH scavenging activity, and color- of powder were observed. Analysis of experimental data i.e., Barberry powder properties and process parameters yielded best quality -moisture content 3.30%, water activity 22.83%, total phenol content 14.97%, DPPH scavenging activity 90.76% and color 41.51%- of powder at inlet air temperature 170°c, feed rate 39 ml/min , ratio of maltodextrin and the dry matter weight of barberry juice -MD/FJ= 1.2-.

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