de Q Souza Guilherme E, Burin Glaucia R M, de Muniz Graciela I B, Alves Helton J
Laboratory of Materials and Renewable Energy (LABMATER), Federal University of Paraná (UFPR), Palotina, PR, 85950-000, Brazil.
Central Laboratory of Nanotechnology (LCNano), Federal University of Paraná (UFPR), Curitiba, PR, 81530-000, Brazil.
Environ Sci Pollut Res Int. 2023 Mar;30(14):39558-39567. doi: 10.1007/s11356-023-25788-x. Epub 2023 Feb 15.
This systematic review presents the potential of using feather waste as a β-keratin source, including the Brazilian scenario in the generation of this byproduct. The structure and properties of α- and β-keratin, the methods commonly reported to extract keratin from poultry feathers, and applications of feather keratin-based materials are also covered in this review. The literature search for poultry production data in Brazil was conducted for the last 2 years, for the period 2021-2022. A broad literature search for extraction methods and applications of feather keratin was done for the period 2001-2022. The poultry industry is one of the largest sectors of the food industry, and Brazil was the third-largest world producer of chicken meat with more than six billion chickens slaughtered in 2021. Poultry feathers constitute about 7% weight of broilers; thus, it can be estimated that about one million tons of poultry feathers were generated in Brazil in 2021, and the improper disposal of this byproduct contributes to environmental problems and disease transmission. The most common method of reusing feathers is the production of feather meal. From economic and environmental points of view, it is advantageous to develop processes to add value to this byproduct, including the extraction of keratin. Among natural biodegradable polymers, keratin-based materials have revolutionized the field of biomaterials due to their biocompatibility and biodegradability, allowing their application in biomedical, pharmaceutical, chemical, and engineering areas.
本系统综述介绍了将羽毛废料用作β-角蛋白来源的潜力，包括巴西产生这种副产品的情况。本综述还涵盖了α-角蛋白和β-角蛋白的结构与特性、从家禽羽毛中提取角蛋白的常见方法以及基于羽毛角蛋白的材料的应用。对巴西过去两年（2021 - 2022年）的家禽生产数据进行了文献检索。对2001 - 2022年期间羽毛角蛋白的提取方法和应用进行了广泛的文献检索。家禽产业是食品工业中最大的部门之一，巴西是世界第三大鸡肉生产国，2021年屠宰的鸡超过60亿只。家禽羽毛约占肉鸡体重的7%；因此，可以估计2021年巴西产生了约100万吨家禽羽毛，这种副产品的不当处置会导致环境问题和疾病传播。最常见的羽毛再利用方法是生产羽毛粉。从经济和环境角度来看，开发提高这种副产品附加值的工艺，包括提取角蛋白，是有利的。在天然可生物降解聚合物中，基于角蛋白的材料因其生物相容性和生物降解性，在生物材料领域引发了变革，使其能够应用于生物医学、制药、化学和工程领域。
