Table 1.

Effect of the blend film PVA content on the FK secondary structure.

Sample	α-Helix (%)	β-Turn (%)	β-Sheet (%)	Random Coil (%)
P-0-30	13.98	24.3	39.55	19.89
P-10-30	13.8	23.87	40.43	19.89
P-20-30	14.1	23.63	39.77	20.3
P-30-30	14.89	26.36	36.53	20.49
P-40-30	14.78	26.8	36.14	20.65
P-50-30	15.66	26.29	35.62	21.51

The secondary structures were expressed as a percentage of corresponding area by ratio to the total amide I band area.