TY - JOUR
T1 - Subcritical water hydrolysis of poultry feathers for amino acids production
AU - Ziero, Henrique Di Domenico
AU - Ampese, Larissa Castro
AU - Sganzerla, William G.
AU - Torres-Mayanga, Paulo C.
AU - Timko, Michael T.
AU - Mussatto, Solange I.
AU - Forster-Carneiro, T.
PY - 2022
Y1 - 2022
N2 - This study assessed the subcritical water hydrolysis (SWH) of poultry feathers to recover amino acids. Experiments were conducted in a semi-continuous flow-through subcritical reactor (110 mL), which was operated over a range of temperatures (210 – 250 °C) and water flow rates (5 – 15 mL min–1), combined through a 22 central composite design, at constant feed (10 g) and pressure (15 MPa). The results demonstrated that non-essential and essential amino acids were obtained from SWH of poultry feathers. The highest hydrolysis temperature resulted in the highest concentrations of valine, methionine, tryptophan, phenylalanine, isoleucine, leucine, and lysine. Otherwise, threonine, histidine, and arginine were obtained more effectively at lower temperatures. The response surface methodology was adopted to identify the best conditions for amino acid production, and it was possible to identify the ranges of temperatures and water flow rates to be used to recover specific amino acids. This study allowed concluding that SWH is a promising eco-friendly technology to recover amino acids from protein-rich wastes.
AB - This study assessed the subcritical water hydrolysis (SWH) of poultry feathers to recover amino acids. Experiments were conducted in a semi-continuous flow-through subcritical reactor (110 mL), which was operated over a range of temperatures (210 – 250 °C) and water flow rates (5 – 15 mL min–1), combined through a 22 central composite design, at constant feed (10 g) and pressure (15 MPa). The results demonstrated that non-essential and essential amino acids were obtained from SWH of poultry feathers. The highest hydrolysis temperature resulted in the highest concentrations of valine, methionine, tryptophan, phenylalanine, isoleucine, leucine, and lysine. Otherwise, threonine, histidine, and arginine were obtained more effectively at lower temperatures. The response surface methodology was adopted to identify the best conditions for amino acid production, and it was possible to identify the ranges of temperatures and water flow rates to be used to recover specific amino acids. This study allowed concluding that SWH is a promising eco-friendly technology to recover amino acids from protein-rich wastes.
KW - Hydrothermal Technology
KW - Pressurized fluid
KW - Animal Waste
KW - Protein residue
U2 - 10.1016/j.supflu.2021.105492
DO - 10.1016/j.supflu.2021.105492
M3 - Journal article
SN - 0896-8446
VL - 181
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
M1 - 105492
ER -