Skip to main content

Table 1 Types and concentrations of free amino acids in feather hydrolysate

From: Effective biodegradation of chicken feather waste by co-cultivation of keratinase producing strains

Amino acid

Concentration (mg/L)

0 h

12 h

24 h

36 h

48 h

Aspartic acid

11.47 ± 0.22

12.20 ± 0.16

20.80 ± 0.92

19.43 ± 0.88

15.55 ± 1.09

Glutamate

46.23 ± 0.18

31.05 ± 0.44

22.33 ± 0.58

22.07 ± 0.13

20.19 ± 0.13

Serine

12.54 ± 1.09

16.97 ± 0.43

14.44 ± 0.18

14.69 ± 0.24

14.61 ± 0.18

Glycine

39.48 ± 0.81

17.99 ± 0.39

12.39 ± 0.11

12.10 ± 0.34

14.34 ± 0.24

Threonine

15.70 ± 0.28

15.43 ± 0.18

14.01 ± 0.83

14.46 ± 0.56

15.74 ± 0.22

Arginine

16.26 ± 0.36

19.02 ± 0.23

17.33 ± 0.16

18.55 ± 0.89

22.13 ± 0.49

Alanine

24.81 ± 0.44

13.71 ± 0.28

10.65 ± 0.58

9.09 ± 0.27

10.05 ± 0.28

Tyrosine

25.64 ± 1.08

54.16 ± 0.66

65.54 ± 0.82

95.14 ± 0.19

171.53 ± 0.42

Valine

37.86 ± 0.21

69.52 ± 0.72

99.29 ± 1.05

123.77 ± 0.25

207.51 ± 0.29

Methionine

23.03 ± 0.14

19.75 ± 0.63

18.94 ± 0.42

15.96 ± 0.54

0.85 ± 0.41

Phenylalanine

33.73 ± 1.04

54.27 ± 1.06

75.82 ± 0.15

98.37 ± 0.91

183.73 ± 0.21

Isoleucine

29.67 ± 0.11

39.80 ± 0.27

48.37 ± 0.19

53.76 ± 0.03

72.96 ± 0.49

Leucine

58.99 ± 0.21

67.84 ± 0.77

73.61 ± 0.31

80.71 ± 1.05

126.61 ± 0.73

Lysine

51.29 ± 0.27

18.36 ± 0.82

15.46 ± 0.25

17.54 ± 0.62

20.94 ± 0.79

Proline

ND

ND

ND

ND

ND

Tryptophan

ND

ND

ND

ND

ND

Cysteine

ND

ND

ND

ND

ND

Histidine

ND

ND

ND

ND

ND

Glutamine

ND

ND

ND

ND

ND

Asparagine

ND

ND

ND

ND

ND

  1. ND not detected