Surface Modification of Gelatin Nanoparticles with Polyethylenimine as Gene Vector

Table 1

Free amino group on nanoparticles.

Types of nanoparticles	Concentration of amino group (mM)
gelatin nanoparticles (unmodified)	0.14
gelatin-PEI 600 Da nanoparticles	1.56
gelatin-PEI 1.8 kDa nanoparticles	2.42
gelatin-PEI 10 kDa nanoparticles	4.18