Controlling the Antioxidant Activity of Green Tea Extract through Encapsulation in Chitosan-Citrate Nanogel

Table 1

Particle size, zeta potential, PDI, and encapsulation efficiency (EE) of CS-NP and CS-NP-GT prepared with different ratios of CS : GT.

CS : GT ratio		Particle size (nm)	Zeta-potential (mV)	PDI	Encapsulation efficiency
1 : 0		112.74 ± 1.56^d	41.83 ± 0.1^a	0.113 ± 0.005^d	0^c
1 : 0.25		125.38 ± 1.57^c	40.83 ± 0.1^b	0.323 ± 0.021^a	48.93 ± 0.26^b
1 : 0.5		135.43 ± 2.52^c	40.40 ± 0.2^c	0.296 ± 0.005^b	68.37 ± 1.17^a
1 : 0.75		243.28 ± 2.13^b	38.75 ± 0.1^d	0.300 ± 0.100^b	65.92 ± 2.67^a
1 : 1		375.06 ± 3.10^a	35.69 ± 0.4^e	0.233 ± 0.005^c	67.01 ± 1.67^a

Results were reported as mean ± SD (n = 3). Different letters in the same column indicate significant differences among means (LSD test, ). PDI: polydispersity index; CS-NP: chitosan nanoparticle; CS-NP-GT: green tea extract-loaded chitosan nanoparticle.