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Abstract
Retinyl palmitate was encapsulated in wax by melt dispersion and microcapsules were characterized for size, loading capacity, encapsulation efficiency, and antioxidant activity. Results were analyzed statistically to understand the effect of process variables i.e., type of wax, theoretical loading capacity, surface concentration and stirring speed. Shelf life and kinetic release of the developed microcapsules were evaluated by measuring actual loading capacity over time. The transfer of particles from non-woven facial wipe to a skin-like surface was also investigated. The method was effective to produce microcapsules with mean size as small as 28 m. The encapsulation efficiency ranged from 60% to 80%. Theoretical loading capacity and surfactant percentage were the most significant factors to control loading and size of microcapsules. Retention of core content in particles stored as dispersion for 1 month and 21.7% transfer to skin-like fabric showed potential of providing skin-care properties by means of capsule loaded textile substrate.