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Table 3 Effect of culturing temperature on feather substrate degradation

From: New keratinolytic bacteria in valorization of chicken feather waste

  Temperature
25 °C 30 °C 35 °C 40 °C
Proteins (µg/mL) 179 ± 2.8 143 ± 8.5 92 ± 7.1 140.5 ± 7.8
Amino groups (mM) 44.4 ± 3.5 16.1 ± 4.4 14.9 ± 3.9 30.1 ± 0.6
Proteolytic activity (U) 0.072 ± 0.014 0.070 ± 0.014 0.071 ± 0.005 0.047 ± 0.004
Substrate loss (% w/v) 51.9 ± 1.0 42.5 ± 1.6 36.4 ± 2.3 22.0 ± 0.1