{Reference Type}: Journal Article
{Title}: A sustainable and efficient recycling strategy of feather waste into keratin peptides with antimicrobial activity.
{Author}: Qin X;Xu X;Guo Y;Shen Q;Liu J;Yang C;Scott E;Bitter H;Zhang C;Qin X;Xu X;Guo Y;Shen Q;Liu J;Yang C;Scott E;Bitter H;Zhang C;Qin X;Xu X;Guo Y;Shen Q;Liu J;Yang C;Scott E;Bitter H;Zhang C;Qin X;Xu X;Guo Y;Shen Q;Liu J;Yang C;Scott E;Bitter H;Zhang C;
{Journal}: Waste Manag
{Volume}: 144
{Issue}: 0
{Year}: May 2022 1
{Factor}: 8.816
{DOI}: 10.1016/j.wasman.2022.04.017
{Abstract}: The study aimed to propose an efficient and eco-friendly strategy to improve the utilization of feather waste and converting it into high-valued antimicrobial products. Under the synergistic effect of instant catapult steam explosion (ICSE) (1.5 MPa-120 s), over 90% of chicken feather powder (CFP) was degraded into soluble peptides via keratinolysis within 3 h, about 90% of which were smaller than 3 kDa, indicating an overwhelming advantage than general proteolysis. Importantly, the keratinolysis hydrolysate of CFP was able to inhibit E. coli growth, among which the fraction < 3 kDa exhibited highest antimicrobial activity with a minimal inhibitory concentration of 30 mg/mL. Compared to other fractions, the fraction < 3 kDa contained higher content of hydrophobic amino acids (364.11 mg/g), in which about 79% of peptides had more than 60% hydrophobic ratio, potentially contributing to its antimicrobial activity. ICSE-keratinolysis process holds potential in reducing both protein resource waste and environmental pollution by valorizing feathers into antimicrobial product.