which dictated 13 experimental runs. Table 1
shows values of the independent variables used to determine the optimum
spray-drying conditions for developing guava powder. The independent
variables affecting the quality of the end product were the
different levels of inlet air temperature and maltodextrin concentration.
A total of 13 runs were conducted. Inlet air temperature varied from
170 °C to 185 °C and maltodextrin concentration level varied from 7%
to 12%. Factors such as moisture content (%), solubility (%), dispersibility
(%), and vitamin C (mg/100 g) difference value were used as quality
attributes of guava powder.