Bioutilization of protein matrixes from the poultry industry using keratinolytic bacteria to obtain hydrolysates with antioxidant properties

MOLINA, MARÍA EMILIA; SPONTÓN, PABLO G.; MANZO, RICARDO MARTÍN

Búzios

Simposio; XXIII Simposio Nacional de Bioprocesos (SINAFERM), XIV Seminario de Hidrólisis Enzimática de Biomasas (SHEB) y XIV Seminario Brasilero de Tecnología Enzimática (ENZITEC); 2022

Biotechnology allows the bioconversion of waste or by-products from the agroindustrial sector into value-added formulations of commercial interest by enzymatic or microbiological extraction processes, leading to an increase in their biological and nutritional power The poultry industry generates a large number of by-products which are mostly discarded, poorly treated, or even used, without an incremental achievement in their economic, nutritional and biological value. The search for high-impact biotechnological alternatives for their use is of vital interest to all sectors of the productive community. Chicken feathers remain as one of the most significant residues of the poultry industry due to their difficulty to be degraded. However, chicken feathers are excellent reservoirs of keratin biomolecules with more than 82% (w/v) of crude protein. Out of these, 91% is keratin, predominantly the β-keratin form. The higher amount of protein and amino acids in this waste is of great potential as an additional source for feed and cosmetic applications (Prajapati et al., 2021). The aim of this report was to produce chicken feathers hydrolysates using the keratinolytic ability of bacteria isolated from chicken processing industries and further evaluate them with respect to the potential antioxidant capacity, a relevant bioactivity associated to a complementary treatment of several chronic pathologies (diabetes, hypertension, metabolic syndrome, among others).