Research Article

Microencapsulation of β-Carotene by Spray Drying: Effect of Wall Material Concentration and Drying Inlet Temperature

Table 1

Experimental design with coded and decoded values of independent variables and spray drying responses.

RunIndependent variablesResponses variables
Arabic gum (%)TLCEEAADY

19.4 (-1)123.2 (-1)21.99.90.5322.5
29.4 (-1)186.8 (+1)27.314.70.1126.9
330.6 (+1)123.2 (-1)24.48.00.7816.3
430.6 (+1)186.8 (+1)29.49.20.2415.9
520 (0)155 (0)15.913.90.2243.9
620 (0)155 (0)14.012.50.2740.2
720 (0)155 (0)16.713.80.1741.3
85 (-α)155 (0)33.616.00.0523.8
935 (α)155 (0)26.412.20.3023.2
1020 (0)110 (-α)11.96.20.3628.6
1120 (0)200(+α)21.414.80.1234.3

T: temperature (°C); LC: loading capacity (mg β-carotene.g−1particles); EE: encapsulation efficiency (%); AA: antioxidant activity (μmol trolox.mg−1β-carotene); DY: drying yield (%).