Optimisation of spray drying conditions of boiling extract liquid of P. Amboinicus Lour for maximum antioxidant activity

Optimisation of spray drying of boiling extract liquid of P. amboinicus
Lour. encapsulated in maltodextrin for maximum antioxidant activity was conducted
using response surface methodology comprising of 22 factorial experiments followed
by the steepest ascent method. Fresh samples of P. amboinicus Lour. were randomly
collected from Kuantan, Malaysia. The antioxidant activities of spray dried boiling
extract encapsulated in maltodextrin were assessed using the 1,1-diphenyl-2-
picrylhydrazyl (DPPH) free radical scavenging assay. Objective: The objective was to
optimize the spray drying of the boiling extract liquid of P. amboinicus Lour. plant, for
maximum antioxidant activity. Results: The results showed that the highest yield of
antioxidant activity of spray dried boiling extract was obtained when the spray dryer
was operated at the combination of levels of operational variables X1 (temperature) =
177.65oC and X2 (concentration of maltodextrin) = 48.65%. Conclusion: These
findings may have a bearing on the application of spray drying technology in preparing
herbal extracts, and may prove useful to the herbs industries.