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The implementation of co-production strategies for metabolites in microalgae and cyanobacteria cultivation holds significant promise for facilitating large-scale production of valuable compounds, including carotenoids, auxins (phytohormones), phycocyanin, and other natural pigments. The specific focus of this study was to evaluate the extracellular production of pigments and auxins, a type of phytohormone with potential applications in biostimulant formulations, using the cyanobacteria Arthrospira platensis under L-tryptophan supplementation. The utilization of Ultra High Performance Liquid Chromatography (UHPLC) coupled with mass spectrometry (ESI-QTOF-MS) confirmed the presence of external carotenoid (neurosporaxanthin), a specific pigment (pyropheophorbide a), and the auxins (indole-3 butyric acid and indole 3-propionic acid) in the supernatant. These findings underscore the potential of a biorefinery strategy with a circularity approach that not only harnesses the cyanobacterial biomass but also capitalizes on the valuable metabolites present in the supernatant.

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Extracellular Compounds of Arthrospira platensis Under L-Tryptophan Supplementation: UHPLC Coupled with Mass Spectrometry (ESI-QTOF-MS) Identification

  • 章节

  • 发表日期：

    2025年

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  • Natali López-Mejía,
  • Ana Lucía Rangel Luna,
  • Geison Modesti Costa,
  • Hugo Alexander Martínez Correa,
  • Hugo Fabian Lobatón García

摘要

The implementation of co-production strategies for metabolites in microalgae and cyanobacteria cultivation holds significant promise for facilitating large-scale production of valuable compounds, including carotenoids, auxins (phytohormones), phycocyanin, and other natural pigments. The specific focus of this study was to evaluate the extracellular production of pigments and auxins, a type of phytohormone with potential applications in biostimulant formulations, using the cyanobacteria Arthrospira platensis under L-tryptophan supplementation. The utilization of Ultra High Performance Liquid Chromatography (UHPLC) coupled with mass spectrometry (ESI-QTOF-MS) confirmed the presence of external carotenoid (neurosporaxanthin), a specific pigment (pyropheophorbide a), and the auxins (indole-3 butyric acid and indole 3-propionic acid) in the supernatant. These findings underscore the potential of a biorefinery strategy with a circularity approach that not only harnesses the cyanobacterial biomass but also capitalizes on the valuable metabolites present in the supernatant.