Perța-Crișan Simona, Ursachi Claudiu Ștefan, Gavrilaș Simona, Oancea Florin, Munteanu Florentina-Daniela
Faculty of Food Engineering, Tourism and Environmental Protection, "Aurel Vlaicu" University of Arad, 2-4 E. Drăgoi Str., 310330 Arad, Romania.
Bioresource Department, National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM Bucharest, 202 Splaiul Independentei, 6th District, 060021 Bucharest, Romania.
Polymers (Basel). 2021 Jun 7;13(11):1896. doi: 10.3390/polym13111896.
One of the agro-industry's side streams that is widely met is the-keratin rich fibrous material that is becoming a waste product without valorization. Its management as a waste is costly, as the incineration of this type of waste constitutes high environmental concern. Considering these facts, the keratin-rich waste can be considered as a treasure for the producers interested in the valorization of such slowly-biodegradable by-products. As keratin is a protein that needs harsh conditions for its degradation, and that in most of the cases its constitutive amino acids are destroyed, we review new extraction methods that are eco-friendly and cost-effective. The chemical and enzymatic extractions of keratin are compared and the optimization of the extraction conditions at the lab scale is considered. In this study, there are also considered the potential applications of the extracted keratin as well as the reuse of the by-products obtained during the extraction processes.
农业产业中广泛存在的一种副产物是富含角蛋白的纤维材料，它正成为一种未得到有效利用的废品。将其作为废物处理成本高昂，因为焚烧这类废物会引发高度的环境问题。考虑到这些因素，对于那些有兴趣将这种难生物降解的副产品进行有效利用的生产者而言，富含角蛋白的废物可被视为一种宝藏。由于角蛋白是一种需要苛刻条件才能降解的蛋白质，而且在大多数情况下其组成氨基酸会被破坏，我们综述了既环保又经济高效的新型提取方法。对比了角蛋白的化学提取法和酶提取法，并考虑了实验室规模下提取条件的优化。在本研究中，还考虑了提取出的角蛋白的潜在应用以及提取过程中获得的副产品的再利用。
