Fig. 1.

Pictorial representation of experimental design (a). Response surface of EE of microencapsulated MVO shown between cross-linker concentration (X2) and MVO-to-chitosan (X3) ratio (b). 2D Contour plots between various formulation parameters as suggested by CCD i interaction between stirring rate (X1) and cross-linker concentration (X2), ii interaction between stirring rate (X1) and MVO to chitosan ratio (X3) and iii interaction between cross-linker concentration (X2) and MVO-to-chitosan ratio (X3)