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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 acidConcentration (mg/L)
SupernatantHydrolysate
asp27.93 ± 1.57130.80 ± 3.94
glu122.86 ± 0.55380.78 ± 15.42
ser7.72 ± 0.8940.28 ± 1.56
his6.38 ± 1.2176.58 ± 3.67
gly8.91 ± 0.1294.30 ± 6.19
thr25.70 ± 2.44136.36 ± 5.28
arg23.44 ± 0.1819.80 ± 0.31
ala138.23 ± 4.36247.44 ± 5.59
tyr55.57 ± 1.38301.76 ± 14.27
cys-s23.34 ± 0.2828.58 ± 0.59
val531.75 ± 10.55337.62 ± 16.20
met204.99 ± 2.77247.16 ± 4.63
phe401.76 ± 8.54577.54 ± 17.48
ile45.25 ± 0.45105.62 ± 7.19
leu50.30 ± 2.11220.06 ± 8.32
lys154.67 ± 5.17360.48 ± 14.29
Total1828.793305.16
  1. Supernatant means the fermentation supernatant; hydrolysate means the products from feather hydrolysis