Department of Textile Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
Appl Biochem Biotechnol. 2022 Dec;194(12):5848-5861. doi: 10.1007/s12010-022-04066-5. Epub 2022 Jul 13.
In this study, indigo-dyed denim fabric was decolorized via separate and simultaneous applying of laccase, sodium hydrosulfite, and cellulase. In this regard, the surface reflectance and color coordinates of the discolored fabrics were evaluated and scanning electron microscopy (SEM) images of the cellulase treated fabric were prepared to analyze their surfaces. Finally, the characterization of the treated samples was investigated, including moisture content, crease recovery angle, air permeability, and abrasion resistance. The color experiments showed that simultaneous applying of laccase, sodium hydrosulfite, and cellulose had a 55.79% improvement in the samples' lightness (L*). Furthermore, the color coordinate test of specimens revealed that the hue of the treated samples was changed to blue and green, and the purity of color (C*) was modified. The increment in the moisture content and air permeability of the treated specimens indicated that the comfort of the jeans clothing had been enhanced. As a result, sodium hydrosulfite demonstrates a high-efficiency denim discoloration in the laccase-mediated system.
在这项研究中，通过单独和同时应用漆酶、亚硫酸氢钠和纤维素酶对靛蓝染色的牛仔布进行了脱色处理。为此，评估了褪色织物的表面反射率和颜色坐标，并制备了纤维素酶处理织物的扫描电子显微镜 (SEM) 图像以分析其表面。最后，对处理后的样品进行了特性研究，包括水分含量、折痕回复角、透气性和耐磨性。颜色实验表明，漆酶、亚硫酸氢钠和纤维素同时应用可使样品的亮度 (L*) 提高 55.79%。此外，对样品的颜色坐标测试表明，处理样品的色调已变为蓝色和绿色，颜色的纯度（C*）也发生了变化。处理后样品的水分含量和透气性增加表明，牛仔裤的穿着舒适度得到了提高。因此，亚硫酸氢钠在漆酶介导的系统中显示出高效的牛仔布褪色效果。
