Fig. 2 shows the effect of MW on protein release behavior. The
initial mean size diameter of
chitosan nanopartic
les encapsulated
with
α
-Lactalbumin, BSA, Transferrin, and Fibrinogen was 31 nm,58 nm, 42 nm, and 40 nm, respectively. It was found that the pro-
tein release of low MW protein (
α
-Lactalbumin) was higher than
that of high MW protein (Fibrinogen). The proteins were rapidly
released at the initial period. Then,
the proteins were released at lower
release rate and reached a plateau. The diffusion coefficient also
shows the same trend, as shown in Table 5. This might be explained
as that the small size of protein s
hould be diffusing through the chitosan matrix faster than large sized proteins. The same trend was also
reported by Mohanraj [17]
Fig. 2 shows the effect of MW on protein release behavior. Theinitial mean size diameter of chitosan nanoparticles encapsulatedwith α-Lactalbumin, BSA, Transferrin, and Fibrinogen was 31 nm,58 nm, 42 nm, and 40 nm, respectively. It was found that the pro-tein release of low MW protein (α-Lactalbumin) was higher thanthat of high MW protein (Fibrinogen). The proteins were rapidlyreleased at the initial period. Then, the proteins were released at lowerrelease rate and reached a plateau. The diffusion coefficient alsoshows the same trend, as shown in Table 5. This might be explainedas that the small size of protein should be diffusing through the chitosan matrix faster than large sized proteins. The same trend was alsoreported by Mohanraj [17]
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