Shelf life and delivery enhancement of vitamin C using chitosan nanoparticles

► Reaction of chitosan with sodium tripolyphosphate to prepare chitosan nanoparticles. ► Characterisation of the nanoparticles (Zeta potential, particle size and morphology). ► Encapsulation of Vitamin C in the nanoparticles. ► Measurements of the in vivo (using rainbow trout) and in vitro release rate of Vitamin C. ► Chitosan nanoparticles encapsulation extended the shelf life of Vitamin C.