2.5. Statistical analysis
Statistical analysis was done by using factorial randomized design of ANOVA. The one factor with four levels that is tin containers, metalized polyester, 4-ply laminates and polystyrene containers also second factor with 4 levels that is 2, 4, 6 and 8 months. Critical difference (CD) is the least significance difference, greater than which all the differences are significant. The data for each parameter were collected in three replicates. The statistical analysis shows that the effect of different packaging materials and the effect of storage period on physical properties of mango milk powder were stored at 30±1 °C and at 5±1 °C.