Uniform Chitosan Microparticles Prepared by a Novel Spray-Drying Technique
Figure 9
SEM photographs microparticles prepared with solutions of different chitosan lactose ratio (w/w): (a) no lactose, (b) 18 : 1, (c) 12 : 1, and (d) 6 : 1 (chitosan concentration 1.5%, storage time 0 day).
