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Updated: May 11, 2026
Preparation of Keratin Hydrolysate from Chicken Feathers and Its Application in Cosmetics
Published on: November 27, 2017
Deep eutectic solvent-mediated valorization of waste feathers into highly digestible antioxidant peptides for
Kunlin Li1, Yuqun Zhou1, Yuqian Tang2
1College of Food Science and Engineering, South China University of Technology, Guangzhou 510641, Guangdong, China.
Abstract:
Waste feathers (WF), major poultry industry by-product, pose health and environmental risks if mismanaged, yet contain valuable protein. Traditional feather protein extraction methods have several limitations: excessive time and energy requirements, low yield, and poor digestibility. This study introduces a novel method using a deep eutectic solvent (DES) to effectively degrade WF into low molecular weight peptides (400-600 Da). This method achieved 79.97 % dissolution rate and 50.26 % extraction yield within 2 h at 92 °C. Critically, in vitro digestion tests showed that the free amino acid release from feather peptides (FP) was 241.08 μg/mL, 63.9 % higher than that from fishmeal (147.06 μg/mL), demonstrating substantially higher digestibility than both standard fishmeal and traditionally processed feathers. This DES-based approach provides an efficient, eco-friendly, and economical route to transform problematic feather waste into a highly digestible and functional animal feed protein, promoting circular economy principles.
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