Co-encapsulation of β-D-Galactosidase and Ascorbic Acid in the Milk Protein-Based Microcapsules: Optimization and Characterization

Table 2

Optimum microencapsulation conditions of βg/VC stabilized by WPI and SC.

Factor name	Goal	Optimized value		Desirability (%)
		Microcapsule I	Microcapsule II	Microcapsule I	Microcapsule II
A: WPI	In range	0	0.2	100	100
B: SC	In range	1	0.8	100	100
C: core/coating ratio (%)	In range	100	100	100	100
D: US power (W)	In range	79.4	75	100	100
Particle size (nm)	Minimize	479.98	501.7	59	56.21
PDI	Minimize	0.185	0.185	100	100
Zeta potential (mV)	Maximize	11.18	9.66	88.99	82.31
EE (lactase enzyme) (%)	Maximize	94.87	94.87	93.76	93.76
EE (ascorbic acid) (%)	Maximize	91.13	90.91	94.67	93.95
Lactase activity (%)	Maximize	55.21	51.62	83.47	77.93
Viscosity (mPa·s)	None	16	34.73	100	100