The Effects of Acidic and Alkaline Hydrolysis Process on some Physical and Chemical Properties of Broiler Chicken Feathers

The objective of this study was to evaluate the physical and chemical properties of the broiler feather concentrate (BFC) in different hydrolysis processes. The raw materials in the form of broiler feather waste (BFW) were hydrolyzed into broiler feather concentrate (BFC) products in the form of feather meal. A total of 1000 g of dry feather samples were used in this study. The study was designed up to 4 treatments with 5 repetitions. Each treatment unit requires 50 g of dry feather samples. The repetition of the sample was the number of times the hydrolysis process. The sample was hydrolyzed using NaOH or HCl. The treatments were applied, namely: H-1) without hydrolysis; H-2) 1M-NaOH 20% (b/v); H-3) 1M-HCl 20% (v/v); H-4) 1M-NaOH 10% (b/v) + 1M-HCl 10% (v/v) (the treatment in H-4 was carried out sequentially). The results showed that the application of chemical processes to produce amino acid profiles of BFW was similar to BFC. The microstructure of the broiler feather differs in each chemical process. The composition of the BFC products was dominated by the compounds of SO3, SiO2, and Al2O3. An application of the chemical hydrolysis process to the BFC increases the value of the water and the ash content, but it decreases the fat and fiber content. The process of chemical hydrolysis using the H-2 treatment 1M-NaOH (20% (b/v) is the best hydrolysis process compared to other treatments.