Valorization of The By-Products of Poultry Industry (Bones) By Enzymatic Hydrolysis and Glycation to Obtain Antioxidants Compounds

Abstract Currently, one of the fastest growing industries in the world is the poultry industry; however, the increase in demand has generated the production of various byproducts, such as bones, and these byproducts have a negative impact on the environment. The aim of the present work was to evaluate the effect of glycation on the increase in antioxidant compounds and the formation of indicators of advanced glycation end products (AGE) in chicken bone hydrolysates; it also aimed to maximize the protein content, degree of hydrolysis and antioxidant content. Through analysis of variance (ANOVA), the content of AGE products (HMF and furfural) formed in the glycation process was analyzed. The chicken bone hydrolysate (CBH) had a protein content of 1.42 g/l, a degree of hydrolysis of 17.2% and an antioxidant capacity of 8334 and 10343 μmol ETrolox/l according to ABTS and ORAC evaluations, respectively. The glycation process increased the ORAC by 6.57%. The presence of hydroxymethylfurfural and furfural was determined in the glycated samples and detected at values between 0.05 and 0.22 and 0 and 0.26 ppm, respectively. In conclusion, hydrolysis and glycation are suitable alternatives that enable the use of chicken bones in producing food ingredients with higher added value.