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<p>Triphenylene and its derivatives are gaining significant importance due to their role in the production of purely organic columnar discotic liquid crystals, which are used in organic light-emitting diode (OLED) screens and semiconductors. In the current study, <i>Paenibacillus</i> sp. PRNK-6 was evaluated for its ability to degrade the tetracyclic aromatic hydrocarbon, triphenylene. <i>Paenibacillus</i> sp. PRNK-6 is a promising PAH-degrading bacterium that utilizes triphenylene as its sole source of carbon and energy. Within 120&#xa0;h of incubation, PRNK-6 degraded 89.75% of 100 mgL⁻¹ triphenylene. Metabolite analysis, enzyme assays, and metabolite feeding experiments indicated that triphenylene was completely metabolized without forming any dead-end products. Several triphenylene metabolites were identified, and a metabolic map of triphenylene was constructed based on the characterization of metabolites, and the specific activities of enzymes involved in its degradation.</p>

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Bacterial metabolism of discotic liquid core component-triphenylene; a future xenobiotic

  • 期刊论文

  • 发表日期：

    2025年6月25日

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  • S.V. Nagarathna,
  • T.M. Chandramouli Swamy,
  • Pooja V. Reddy,
  • Anand S. Nayak

摘要

Triphenylene and its derivatives are gaining significant importance due to their role in the production of purely organic columnar discotic liquid crystals, which are used in organic light-emitting diode (OLED) screens and semiconductors. In the current study, Paenibacillus sp. PRNK-6 was evaluated for its ability to degrade the tetracyclic aromatic hydrocarbon, triphenylene. Paenibacillus sp. PRNK-6 is a promising PAH-degrading bacterium that utilizes triphenylene as its sole source of carbon and energy. Within 120 h of incubation, PRNK-6 degraded 89.75% of 100 mgL⁻¹ triphenylene. Metabolite analysis, enzyme assays, and metabolite feeding experiments indicated that triphenylene was completely metabolized without forming any dead-end products. Several triphenylene metabolites were identified, and a metabolic map of triphenylene was constructed based on the characterization of metabolites, and the specific activities of enzymes involved in its degradation.