MAHMUD, A. D.; Aliyu, Z.; Abdullahi Oluwatoyin, B.; Ahmed, A.; Yahaya A, S.; Mohammed Saleh, A. Extraction and Characterization of Keratin Protein from Chicken Feathers Using Alkaline Hydrolysis Method: Effects of Sodium Sulphide Concentration and Shelf-Life Evaluation. Malay. J. Catal. 2023, 7, 37-41.