Figure 8: The in vitro drug release profile from NPs at T = 310.15 K in phosphate–buffered saline, pH 7.4 for the same amount of drug: a) results for different concentration of PLGA (% w/v): (▲) 0.8 (power of sonication set at 30 % of 70 W); (♦) 1.3 (power of sonication set at 30 % of 70 W); (■) 1.6 (power of sonication set at 30% of 70 W); b) results for the different power of sonication: (♦) 30%; (■) 45%; (▲) 60% at concentration of PLGA, 1.3 (% w/v).