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Horseradish peroxidase immobilised onto electrospun fibres and its application in decolourisation of dyes from model sea water
Process Biochemistry ( IF 4.4 ) Pub Date : 2021-03-01 , DOI: 10.1016/j.procbio.2020.11.015
Katarzyna Jankowska , Jakub Zdarta , Adam Grzywaczyk , Oliwia Degórska , Ewa Kijeńska-Gawrońska , Manuel Pinelo , Teofil Jesionowski

Abstract Despite many studies concerning dyes decolourisation, we propose a novel, cheap, eco-friendly and sustainable solution for highly effective dyes removal based on electrospun materials and immobilised enzyme. Our study provides proof-of-concept for the immobilisation of horseradish peroxidase (HRP) on polyamide 6 electrospun fibres by adsorption and covalent binding, and application for dyes decolourisation from imitating polluted sea waters. The highest relative activity of immobilised HRP was obtained after immobilisation performed at 50 °C and pH 7 for 60 min for adsorption method, as well as using 3% of glutaraldehyde concentration, 70 min of process time, 60 °C and pH 7 for covalent binding. Biocatalytic systems produced were found to possess high catalytic properties and were used for decolourisation of Reactive Black 5 and Malachite Green textile dyes from solutions imitating polluted sea waters, that is a novel approach for removal of pollutants from aqueous solutions. The highest decolourisation efficiencies of dyes were obtained after 60 min of treatment at pH 7 and temperature 25 °C and reached over 70%. In the future, the presented approach based on use of enzymes immobilised in decolourisation processes, might play significant role in industrial removal of dyes.

中文翻译:

固定在电纺纤维上的辣根过氧化物酶及其在模型海水染料脱色中的应用

摘要 尽管有许多关于染料脱色的研究,但我们提出了一种基于电纺材料和固定化酶的新型、廉价、环保和可持续的高效染料去除解决方案。我们的研究为通过吸附和共价结合将辣根过氧化物酶 (HRP) 固定在聚酰胺 6 电纺纤维上提供了概念验证,以及用于模拟受污染海水的染料脱色。固定化 HRP 的最高相对活性是在 50°C 和 pH 7 吸附法固定 60 分钟后获得的,以及使用 3% 戊二醛浓度、70 分钟处理时间、60°C 和 pH 7 进行共价捆绑。发现生产的生物催化系统具有高催化性能,可用于从模拟受污染海水的溶液中脱色活性黑 5 和孔雀石绿纺织染料,这是一种从水溶液中去除污染物的新方法。在 pH 7 和温度 25 °C 处理 60 分钟后,染料的脱色效率最高,达到 70% 以上。将来,所提出的基于使用固定在脱色过程中的酶的方法可能在工业去除染料中发挥重要作用。在 pH 7 和温度 25 °C 处理 60 分钟后,染料的脱色效率最高,达到 70% 以上。将来,所提出的基于使用固定在脱色过程中的酶的方法可能在工业去除染料中发挥重要作用。在 pH 7 和温度 25 °C 处理 60 分钟后,染料的脱色效率最高,达到 70% 以上。将来,所提出的基于使用固定在脱色过程中的酶的方法可能在工业去除染料中发挥重要作用。
更新日期:2021-03-01
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