Liposomes of probiotic's lyophilized cell free supernatant; a potential cosmeceutical product.

The potential uses of lyophilized cell free supernatant (CFS) of human oral derived Lactobacillus paracasei SD1 and Lactobacillus rhamnosus SD11 as cosmeceutical ingredients were investigated in the present study. Lyophilized CFS of both strains showed the antioxidant activity in concentration dependent manner. They also exhibited antimicrobial activity against P. acne, S. aureus and S. epidermidis. In combination, these two strains produced synergistic responses, not only on antioxidant activity but also on antimicrobial activity. A liposomal delivery system was employed to mask the unpleasant colour and odour of CFS. The optimal liposome formulation was characterized by a particle size of 344 nm, PDI of 0.19, zeta value of -48.05 mV and %EE of 69.45. The cytotoxicity results showed that the lyophilized CFS, which was toxic, became non-toxic after encapsulating into liposomes. Altogether, current findings demonstrate the worthiness of development of liposomes of probiotic's lyophilized CFS for cosmeceutical applications.