Table 2.

Loading efficiency of Rhodamine B into PLGA nanospheres prepared using nanoprecipitation method (NPM) or emulsification solvent evaporation method (ESE).

Batch No.	Polymer	Preparation Method	% Drug Loading Efficiency
1b	PLGA 50:50	NPM	47 ± 4
1d	PLGA 50:50	ESE	28 ± 6
2b	PLGA 70:30	NPM	56 ± 7
2d	PLGA 70:30	ESE	29 ± 3
3b	Branched PLGA	NPM	61 ± 11
3d	Branched PLGA	ESE	34 ± 4
4b	Purasorb®	NPM	18 ± 5

Data represent mean ± standard deviation (SD) from three measurements.