Controlled assembly of secondary keratin structures for continuous and scalable production of tough fibers from chicken feathers,Green Chemistry

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Controlled assembly of secondary keratin structures for continuous and scalable production of tough fibers from chicken feathers
Green Chemistry ( IF 9.3 ) Pub Date : 2020/02/18 , DOI: 10.1039/c9gc03896e
Bingnan Mu _{1,

2,

3,

4,

5} , Faqrul Hassan _{1,

2,

3,

4,

5} , Yiqi Yang _{1,

2,

3,

4,

5}

Affiliation

Tough keratin fibers from chicken feathers have been produced continuously via controlled assembly of secondary protein structures. Though research on utilization of keratinous wastes began decades ago, very few regenerated products with high quality were developed due to damage to the primary structures during extraction and poor recovery of the secondary structures in the regenerated materials. Fibers have the highest quality requirements among the regenerated keratin products, including high toughness and resistance to repeated laundering. Our group developed regenerated keratin fibers on a lab scale previously. However, the regenerated keratin had poor spinnability with low recovery of secondary protein structures. As a result, keratin fibers could not be produced continuously, and their properties, especially the wet strength, were not acceptable. In this paper, high drawing ratios of keratin fibers on a continuous line have been achieved via stepwise oxidation and drawing technology. This technology resulted in controlled assembly of disulfide crosslinkages, optimum recovery of the secondary structures, satisfactory mechanical properties and scalable production of keratin fibers. Furthermore, the use of inexpensive chemicals makes the continuous keratin fiber production developed in this work affordable for scale-up. The technology developed for continuous production of tough keratin fibers has high potential for the development of high quality regenerated products from other cysteine-containing protein materials.

中文翻译：

受控组装二级角蛋白结构，用于从鸡毛连续而可扩展地生产坚韧纤维

通过连续不断地从鸡羽毛生产坚韧的角蛋白纤维控制二级蛋白质结构的装配。尽管几十年前就开始了对角质废物利用的研究，但由于提取过程中一级结构的损坏以及再生材料中二级结构的回收率不高，开发出高质量的再生产品的情况很少。在再生的角蛋白产品中，纤维具有最高的质量要求，包括高韧性和耐反复洗涤的能力。我们的小组以前在实验室规模上开发了再生角蛋白纤维。然而，再生的角蛋白的可纺性差，二级蛋白质结构的回收率低。结果，角蛋白纤维不能连续生产，并且它们的性能，特别是湿强度，是不可接受的。在本文中，通过逐步氧化和拉伸技术。该技术导致二硫键交联的受控组装，二级结构的最佳回收率，令人满意的机械性能和角蛋白纤维的可扩展生产。此外，廉价化学药品的使用使得在这项工作中开发的连续角蛋白纤维生产可用于规模放大。为连续生产坚硬的角蛋白纤维而开发的技术具有很高的潜力，可以从其他含半胱氨酸的蛋白质材料开发出高质量的再生产品。

更新日期：2020-03-09

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