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Table 2 Amino acid content in feather hydrolysate

From: Biotransformation of keratin waste to amino acids and active peptides based on cell-free catalysis

Amino acid Concentration (mg/L)
Supernatant Hydrolysate
asp 27.93 ± 1.57 130.80 ± 3.94
glu 122.86 ± 0.55 380.78 ± 15.42
ser 7.72 ± 0.89 40.28 ± 1.56
his 6.38 ± 1.21 76.58 ± 3.67
gly 8.91 ± 0.12 94.30 ± 6.19
thr 25.70 ± 2.44 136.36 ± 5.28
arg 23.44 ± 0.18 19.80 ± 0.31
ala 138.23 ± 4.36 247.44 ± 5.59
tyr 55.57 ± 1.38 301.76 ± 14.27
cys-s 23.34 ± 0.28 28.58 ± 0.59
val 531.75 ± 10.55 337.62 ± 16.20
met 204.99 ± 2.77 247.16 ± 4.63
phe 401.76 ± 8.54 577.54 ± 17.48
ile 45.25 ± 0.45 105.62 ± 7.19
leu 50.30 ± 2.11 220.06 ± 8.32
lys 154.67 ± 5.17 360.48 ± 14.29
Total 1828.79 3305.16
  1. Supernatant means the fermentation supernatant; hydrolysate means the products from feather hydrolysis