However,
at doses of 300 and 600 kGy, the L* parameter decreased significantly
(po0.05) compared with the un-irradiated samples. The
a* parameter showed a significant (po0.05) decrease as the dose
was increased. In contrast, for b* parameter, it showed a significant
(po0.05) increase at 150 kGy of absorbed dose, after which a remarkably
decrease was observed. From the results, the decrease in
L* values with increase in b* values corroborates that a yellowish
tint appeared in the PLA samples