Sample

Before storage

After storage

MD (nm)

PDI

MD (nm)

PDI

M-1

214.5 ± 2.6

0.066 ± 0.041

229.8 ± 3.6

0.093 ± 0.023

M-2

194.7 ± 1.8

0.082 ± 0.018

204.3 ± 4.5

0.086 ± 0.018

M-3

148.4 ± 2.1

0.076 ± 0.023

153.6 ± 3.4

0.096 ± 0.036