Table 2 Amino acid composition of PSC and UPSC from chicken lung (%, w/w)

Asp

5.71 ± 0.13^b

4.87 ± 0.11^a

Glu

10.92 ± 0.21^b

10.35 ± 0.19^a

Ser

3.98 ± 0.09^a

3.74 ± 0.12^a

His

0.90 ± 0.04^a

0.86 ± 0.03^a

Gly

22.27 ± 0.25^a

22.58 ± 0.24^a

Thr

2.61 ± 0.07^a

3.07 ± 0.12^b

Arg

7.39 ± 0.14^b

6.47 ± 0.16^a

Ala

11.87 ± 0.20^a

12.75 ± 0.21^b

Pro

10.72 ± 0.16^a

11.31 ± 0.12^b

Hyp

8.63 ± 0.15^a

9.45 ± 0.13^b

Tyr

0.011 ± 0.0

–

Val

2.52 ± 0.05^a

2.96 ± 0.10^b

Met

0.12 ± 0.0 ^a

0.15 ± 0.01^b

Cys

–

–

Ile

1.35 ± 0.05^a

1.41 ± 0.07^a

Leu

3.20 ± 0.06^a

3.42 ± 0.09^b

Phe

0.67 ± 0.02^a

0.86 ± 0.02^b

Lys

3.74 ± 0.04^a

4.22 ± 0.05^b

Hydrophobic amino acids^#

33.06 ± 0.22^a

35.93 ± 0.19^b

Imino acid^*

19.35 ± 0.16^a

20.76 ± 0.15^b