UTILIZATION OF POULTRY FEATEHRS IN FOOD AND FEED. 3. CHEMICAL EVALUAION OF PROTEIN ISOLATES, PREPARED BY TWO METHODS FROM FEATHERS OF DIFFERENT POULTRIES
ABDEL-MOATY, A., IBRAHIM, M., EL-SANAFIRY, N. (1993). UTILIZATION OF POULTRY FEATEHRS IN FOOD AND FEED. 3. CHEMICAL EVALUAION OF PROTEIN ISOLATES, PREPARED BY TWO METHODS FROM FEATHERS OF DIFFERENT POULTRIES. EKB Journal Management System, 71(3), 805-815. doi: 10.21608/ejar.1993.466165
ADEL A. ABDEL-MOATY; MOHAMED KH. IBRAHIM; NABILA Y. EL-SANAFIRY. "UTILIZATION OF POULTRY FEATEHRS IN FOOD AND FEED. 3. CHEMICAL EVALUAION OF PROTEIN ISOLATES, PREPARED BY TWO METHODS FROM FEATHERS OF DIFFERENT POULTRIES". EKB Journal Management System, 71, 3, 1993, 805-815. doi: 10.21608/ejar.1993.466165
ABDEL-MOATY, A., IBRAHIM, M., EL-SANAFIRY, N. (1993). 'UTILIZATION OF POULTRY FEATEHRS IN FOOD AND FEED. 3. CHEMICAL EVALUAION OF PROTEIN ISOLATES, PREPARED BY TWO METHODS FROM FEATHERS OF DIFFERENT POULTRIES', EKB Journal Management System, 71(3), pp. 805-815. doi: 10.21608/ejar.1993.466165
ABDEL-MOATY, A., IBRAHIM, M., EL-SANAFIRY, N. UTILIZATION OF POULTRY FEATEHRS IN FOOD AND FEED. 3. CHEMICAL EVALUAION OF PROTEIN ISOLATES, PREPARED BY TWO METHODS FROM FEATHERS OF DIFFERENT POULTRIES. EKB Journal Management System, 1993; 71(3): 805-815. doi: 10.21608/ejar.1993.466165

UTILIZATION OF POULTRY FEATEHRS IN FOOD AND FEED. 3. CHEMICAL EVALUAION OF PROTEIN ISOLATES, PREPARED BY TWO METHODS FROM FEATHERS OF DIFFERENT POULTRIES

Egyptian Journal of Agricultural Research
Volume 71, Issue 3, September 1993, Pages 805-815    PDF (2.82 M)
Document Type: Original Article
DOI: 10.21608/ejar.1993.466165
Authors
ADEL A. ABDEL-MOATY1; MOHAMED KH. IBRAHIM1; NABILA Y. EL-SANAFIRY2
1Department of Animal production, Faculty of Agricultural, Moshtohor, Zagazig University, Egypt
2Food Technology Research institute, Agricultural Research Centre, Giza, Egypt.
Abstract
Protein isolate was prepared from feathers of chicken, goose and duck by NaOH hydrolysis (NaOH-F.P.I., Treatment 1) or KOH hydrolysis (KOH-F.P.I., Treatment 2) followed by isoelectric precipitation with or­thophosphoric acid. the moisture content ranged from 4.87 to 6.61 % on dry weight basis (D.W.) protein, fat ash and carbohydrate ranges were 90.15-94.02%, 0.56-0.80%, 2.87-6.11% and 1.89-3.86% respec­tively . Energy value on WW and DW were 357-368 and 379-391 cal/ 100gm. Highest protein and best physical characteristics were found for chicken KOH-F.P.I. The main source of energy is the protein which con­stiluted more than 94% of the total energey, while fat plus carbohydrate contributed less than 6% of the total energy . Essential amino acids (EAA) concentration and amino acids scores ( A.S.) were higher for chicken than goose or duck F.P.I. and KOH- F.P.I. showed abetter profile of EAA compostition than NaOH-F.P.I. Chicken KOH-NaOH was deficient in 5 EAA, first limiting EAA was lysine, This sample showed highest cal­culated essential amino acid index ( E.A.A.1.) , biological value ( B.V.) and protein efficiency ratio (PER) values. ( When compared with F.P.I., Hy­drolyzed feather meal ( HFM) products which was defficient in 6 - 8 EA A could be considered as either protein concentrate ( not less than 70% protein or defatted meal ( not less than 50% protein ) but never consid­ered P. 1. ( not less than 50% protein) . E.P.I. is recommended to be used in man's diet, while be used in human food as meat substitute .
Statistics
Article View: 1