Production and characterization of collagen hydrolysate/chitosan/keratin based biocomposite films from biological wastes of leather and poultry industries
Project no. 23255 · Status: Kapanmış · 2021
Summary
<p>Recently, declining petroleum resources worldwide, increasing demand of developing economies for petroleum, and political and environmental concerns about fossil-based resources have led to an urgent need for environmentally friendly, renewable, sustainable, cost-effective, and biological resources in the packaging industry. Effective use of hide trimming and chicken feather waste is one of the sustainable ways to recycle solid waste from the leather and poultry industry. This project aimed to synthesize and characterize collagen hydrolysate (CH), chitosan (CS), and keratin (K) ternary films with different blend compositions (CH/CS/K, 50/50/0, 45/45/10, 40/40/20, 35/35/30, and 30/30/40). SDS-PAGE and FTIR results confirmed that CH isolated from hide trimming wastes was in type I structure, while the molecular weight of the extracted K samples was in the range of 42.5-60 kDa. The mechanical results of this project showed that the increase in the K ratio in the ternary-based films caused a significant increase in thickness and tensile strength (p < 0.05) and a significant decrease in the elongation at break (%). This project demonstrated that hide trimming and chicken feather waste could be used to produce a biodegradable film, which provides a way to maximize recycling and achieve sustainable development in the leather and poultry industry.</p>