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<p>Treatment and recycling of textile wastewater in an economical and eco-friendly manner is a growing issue in developing countries. The current study integrates wet and dry laboratory investigations to understand the biocatalytic impact of <i>Delftia acidovorans</i> strain AM-1 in textile wastewater treatment and recycling. The study reported 100% sequence similarity of the deduced flavoprotein, NADPH-dependent FMN reductase, from the strain <i>Delftia acidovorans</i> AM-1 with the azoreductase enzyme in the database. Further, molecular docking studies vividly presented a strong interaction of this enzyme with the chemical structures of three azo dyes, reactive black-5 (azRB-5), reactive red-120 (azRR-120), and congo red (azCR). In laboratory trials, approximately 80% of the color of these dyes is removed by the strain AM-1 in 72 h. Yeast extract was proven to be an ideal choice in carbon sources, while 30 °C and pH 6 were the preferred conditions for strain AM-1 to maximize the dye decolorization. The textile wastewater quality, measured in terms of EC, TDS, TSS, COD, and BOD, significantly improved after treatment with the pure culture of <i>Delftia acidovorans</i> AM-1. In the pot experiment, the growth and antioxidant enzymes of maize plants applied with treated wastewater were recorded statistically at par with plants irrigated with distilled water; however, the values of these parameters were significantly higher than the plants irrigated with non-treated wastewater. The study concludes the potential involvement of the flavoproteins of the <i>Delftia acidovorans</i> strain AM-1 not only in degrading synthetic textile azo dyes but also in treating textile wastes to a level appropriate for agricultural usage.</p> Graphical Abstract <p></p>

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Potential Application of NADPH-Dependent FMN Reductase-Harboring Delftia Acidovorans in Laboratory-Scale Textile Wastewater Treatment and Re-Use

  • 期刊论文

  • 发表日期：

    2026年1月10日

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  • Awais Maqsood,
  • Syeda Khola Tazeen,
  • Sabir Hussain,
  • Faisal Mahmood,
  • Sher Muhammad,
  • Muhammad Shafiq Shahid,
  • Faizah Amer Altihani,
  • Mohamed Hashem,
  • Danish Riaz,
  • Irfan Manzoor,
  • Muhammad Shahid

摘要

Treatment and recycling of textile wastewater in an economical and eco-friendly manner is a growing issue in developing countries. The current study integrates wet and dry laboratory investigations to understand the biocatalytic impact of Delftia acidovorans strain AM-1 in textile wastewater treatment and recycling. The study reported 100% sequence similarity of the deduced flavoprotein, NADPH-dependent FMN reductase, from the strain Delftia acidovorans AM-1 with the azoreductase enzyme in the database. Further, molecular docking studies vividly presented a strong interaction of this enzyme with the chemical structures of three azo dyes, reactive black-5 (azRB-5), reactive red-120 (azRR-120), and congo red (azCR). In laboratory trials, approximately 80% of the color of these dyes is removed by the strain AM-1 in 72 h. Yeast extract was proven to be an ideal choice in carbon sources, while 30 °C and pH 6 were the preferred conditions for strain AM-1 to maximize the dye decolorization. The textile wastewater quality, measured in terms of EC, TDS, TSS, COD, and BOD, significantly improved after treatment with the pure culture of Delftia acidovorans AM-1. In the pot experiment, the growth and antioxidant enzymes of maize plants applied with treated wastewater were recorded statistically at par with plants irrigated with distilled water; however, the values of these parameters were significantly higher than the plants irrigated with non-treated wastewater. The study concludes the potential involvement of the flavoproteins of the Delftia acidovorans strain AM-1 not only in degrading synthetic textile azo dyes but also in treating textile wastes to a level appropriate for agricultural usage.

Graphical Abstract