Depto. Biotecnología y Bioingeniería, CINVESTAV-IPN, México.
Prep Biochem Biotechnol. 2023;53(7):860-871. doi: 10.1080/10826068.2022.2153368. Epub 2022 Dec 17.
Azo dyes have been found in wastewater from textile industries. These compounds continuously persist in the environment for long periods of time and may be toxic for living beings. An alternative treatment for dye removal that has proven to be effective is aerobic treatment with fungi. In this study, was investigated as a mechanism to remove orange G (OG). Removal of 200 mg/L of OG by biomass was carried out in solid and liquid medium, which showed a positive correlation between growth and dye removal. In liquid media what was proved is that the efficiency of OG removal by depends on its concentration; at 200 mg/L of OG remove by degradation and at 400 mg/L by processes as sorption and degradation. During OG removal, the generation of organic acids by was modified compared to constitutive generation, one of the modifications was the increase of gluconic acid production and the decrease of acids involved in the Krebs cycle, as well as the null detection of oxalic acid. The monitoring of organic acids by high-performance liquid chromatography (HPLC) was important because some of them have been linked to dye removal.
偶氮染料已在纺织工业的废水中被发现。这些化合物在环境中持续存在很长时间，可能对生物有毒。一种已被证明有效的替代染料去除的处理方法是真菌有氧处理。在这项研究中，研究了作为去除橙色 G (OG) 的机制。在固体和液体培养基中，通过生物量去除 200mg/L 的 OG，显示出 生长和染料去除之间存在正相关关系。在液体培养基中，被证明的是，由 去除 OG 的效率取决于其浓度；在 200mg/L 的 OG 被降解去除，而在 400mg/L 时则通过吸附和降解等过程去除。在 OG 去除过程中，与组成型生成相比， 产生的有机酸发生了变化，其中之一是增加了葡萄糖酸的产生，减少了参与克雷布斯循环的酸，以及检测不到草酸。通过高效液相色谱 (HPLC) 监测有机酸很重要，因为其中一些有机酸与染料去除有关。
