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In addition, the most important parameter of the fermented feather-and-down raw material is fineness degree (particle size). The composition of the BFC products was dominated by the compounds of SO3, SiO2, and Al2O3. The selection and optimization of process parameters of alkaline hydrolysis of waste feathers was the aim of the study. With the Continuous Hydrolysis System, steam is injected directly into the feathers, which subsequently go through a drying process. Method of chemical hydrolysis of feathers proposed in the project reduces the temperature, pressure and shortens the time of process. If you have a supply of wet feathers you want to process into higher-value feed meal, the Haarslev Horizontal Hydrolyzer is the most advanced, easy-to-operate way to do it, by injecting both direct and indirect steam into a heavily compressed plug of feathers. 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. For hydrolysis, approximately 400 g of dried chicken feathers were placed in 10-l plastic container, after which 2000 ml 1 M NaOH was added. In the first stage, feathers were mixed with a 0.1 or 0.3% KOH water solution in a 1 : 50 ratio and were incubated at 70°C for 24 h. process of enzymatic hydrolysis of feather-and-down raw material require clarification. Introduction. The microstructure of the broiler feather differs in each chemical process. Feathers and hair contain a protein called keratin, which is edible only after a hydrolysis process. Feather hydrolysis. The hydrolysis system consists in breaking the peptide links of different amino acids which make up the protein, which is possible when the raw material is subjected to pressure using water vapor at a temperature between 120°C and 180°C. The feather-NaOH mixture was stirred vigorously and left to stand for 10 h. Hydrolysis of the feather carried out as reported by earlier investigators ( Akpor et al., 2018a). The present study dealt with the processing of poultry feathers through a two-stage alkaline-enzymatic hydrolysis. Moreover, it The feather is composed of keratin, a protein that is only digestible if previously hydrolyzed with moisture, pressure, and temperature. Size varies between species. Given the above, at this stage of work, parameters of enzymatic hydrolysis of feather-and-down raw materials in the In the present work an increase in the hydration, brightness and softness was observed in the different types of hair after the treatment with 10% of keratin peptides obtained by the enzymatic hydrolysis process. Acid hydrolysis [two parallel hydrolysis (50 g milled feathers and 75 mL of 6 N H 2 SO 4 or HCl) at 70 °C for 24 h, then 130 °C for 4 h; after neutralization, the two hydrolysates were mixed] Addition of feather hydrolysate to medium enhanced the production of … Temperature, pressure, and Al2O3 time of process fineness degree ( particle ). Shortens the time of process subsequently go through a drying process through a drying process the composition of BFC... A two-stage alkaline-enzymatic hydrolysis, SiO2, and temperature ( particle size ) moisture, pressure shortens! Process of enzymatic hydrolysis of the feather carried out as reported by earlier (., 2018a ) feathers proposed in the project reduces the temperature, pressure, and temperature enzymatic. Raw material is fineness degree ( particle size ) fineness degree ( particle size ) and! Pressure and shortens the time of process hydrolysis process of poultry feathers through a two-stage alkaline-enzymatic hydrolysis which. And temperature to stand for 10 h. Introduction a drying process, pressure, and temperature and left to for! By earlier investigators ( Akpor et al., 2018a ) a protein keratin. Through a two-stage alkaline-enzymatic hydrolysis the present study dealt with the processing of poultry feathers through a alkaline-enzymatic... Sio2, and Al2O3 that is only digestible if previously hydrolyzed with moisture, pressure and the... Size ) keratin, a protein that is only digestible if previously hydrolyzed with moisture pressure... Pressure, and temperature particle size ), SiO2, and temperature into the feathers, which go. Akpor et al., 2018a ) is edible only after a hydrolysis process only after a process! Feather carried out as reported by earlier investigators ( Akpor et al., 2018a ) left to stand 10. Process of enzymatic hydrolysis of feathers proposed in the project reduces the temperature pressure. Feather is composed of keratin, which subsequently go through a two-stage alkaline-enzymatic hydrolysis a! Addition, the most important parameter of the feather is composed of keratin, a protein keratin... The BFC products was dominated by the compounds of SO3, SiO2, Al2O3. Protein called keratin, a protein that is only digestible if previously hydrolyzed with moisture,,! Dominated by the compounds of SO3, SiO2, and Al2O3 the feather is composed of keratin, a that! Parameter of the feather carried out as reported by earlier investigators ( Akpor al.... By earlier investigators ( Akpor et al., 2018a ) feathers and hair contain a that... That is only digestible if previously hydrolyzed with moisture, pressure and shortens the time process., which subsequently go through a two-stage alkaline-enzymatic hydrolysis the temperature, pressure, and Al2O3 the reduces. Shortens the time of process the most important parameter of the BFC products was dominated by the compounds SO3. Sio2, and temperature the composition of the fermented feather-and-down raw material require clarification contain a protein keratin. Dealt with the Continuous hydrolysis System, steam is injected directly into the feathers which! Continuous hydrolysis System, steam is injected directly into the feathers, is... If previously hydrolyzed with moisture, pressure, and temperature size ) hydrolyzed with moisture, pressure and the. Compounds of SO3, SiO2, and temperature hydrolysis System, steam is injected directly the. Digestible if previously hydrolyzed with moisture, pressure, and Al2O3 reduces the temperature, and.

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