. 2019 Dec 4;11(12):2010. doi: 10.3390/polym11122010

Table 2.

Particles size, polydispersity index (PDI) and zeta potential of α- or β-chitosan nanoparticles prepared from chitosan with different set of deacetylation degree (%DD) and molecular weight (MW) combinations respectively.

Samples	Particles Size (nm)	PDI *	Zeta Potential (mV)
aNP1	169.23 ± 3.33^d	0.314 ± 0.015^a	23.07 ± 1.15^c
aNP2	165.03 ± 2.57^d	0.271 ± 0.014^a	24.43 ± 0.81^bc
aNP3	332.20 ± 15.85^a	0.168 ± 0.101^bc	26.33 ± 2.91^b
bNP1	192.50 ± 1.91^c	0.248 ± 0.012^ab	24.83 ± 0.49^bc
bNP2	170.13 ± 2.29^d	0.152 ± 0.011^c	25.40 ± 0.56^bc
bNP3	232.30 ± 3.27^b	0.098 ± 0.052^c	30.57 ± 0.64^a

* PDI = polydispersity index. All the data represent the mean with standard deviation (n = 3). ^a,b,c,… The different letters present statistical difference (p < 0.05). Where: a = α-chitosan, b = β-chitosan, NP = chitosan nanoparticles, 1 = low %DD and high MW, 2 = medium %DD and medium MW, and 3 = high %DD and low MW.