Table 1: Effect of Span 40 : CH ratio on percent entrapment efficiency.

Sr. numberSpan 40 : CH with 10 mg SRP loadingPercent drug entrapmentParticle size (nm) Polydispersity index

11 : 0.5 0.28
21 : 0.7 0.41
31 : 1 0.28
41 : 1.5 0.35
51 : 2 0.61
60.5 : 1 0.45
70.7 : 1 0.25
81.5 : 1 0.48
92 : 1 0.54