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首页> 外文期刊>Bioprocess and Biosystems Engineering >Fabrication, characterization and application of laccase-nylon 6,6/Fe3+ composite nanofibrous membrane for 3,3 '-dimethoxybenzidine detoxification
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Fabrication, characterization and application of laccase-nylon 6,6/Fe3+ composite nanofibrous membrane for 3,3 '-dimethoxybenzidine detoxification

机译：用于3,3'-二甲氧基联苯胺解毒的漆酶-尼龙6,6 / Fe3 +复合纳米纤维膜的制备，表征和应用

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In this study, laccase was immobilized on nylon 6,6/Fe3+ composite (NFC) nanofibrous membrane and used for the detoxification of 3,3'-dimethoxybenzidine (DMOB). The average size and tensile strength of the NFC membrane were found to be 60-80 nm (diameter) and 2.70 MPa, respectively. The FTIR results confirm that the amine (N-H) group of laccase was attached with Fe 3? particles and the carbonyl (C=O) group of NFC membrane via hydrogen bonding. The half-life of the laccase-NFC membrane storage stability was increased from 6 to 11 weeks and the reusability was significantly extended up to 43 cycles against ABTS oxidation. Enhanced electro-oxidation of DMOB by laccase was observed at 0.33 V and the catalytic current was found to be 3' lA. The DMOB-treated mouse fibroblast 3T3-L1 preadipocytes showed maximum (97 %) cell inhibition at 75 mu M L-1 within 24 h. The cytotoxicity of DMOB was significantly decreased to 78 % after laccase treatment. This study suggests that laccase-NFC membrane might be a good candidate for emerging pollutant detoxification.
机译：在这项研究中，漆酶被固定在尼龙6,6 / Fe3 +复合材料（NFC）纳米纤维膜上，并用于3,3'-二甲氧基联苯胺（DMOB）的解毒。发现NFC膜的平均尺寸和拉伸强度分别为60-80nm（直径）和2.70MPa。 FTIR结果证实漆酶的胺基（N-H）与Fe 3+相连。颗粒和NFC膜的羰基（C = O）通过氢键键合。漆酶-NFC膜储存稳定性的半衰期从6周增加到11周，并且针对ABTS氧化的重用性显着延长至43个循环。在0.33V下观察到漆酶增强了DMOB的电氧化，发现催化电流为3'1A。 DMOB处理的小鼠成纤维细胞3T3-L1前脂肪细胞在24小时内在75μM L-1处表现出最大的细胞抑制作用（97％）。漆酶处理后，DMOB的细胞毒性显着降低至78％。这项研究表明漆酶-NFC膜可能是新兴污染物排毒的良好候选者。

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