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<p>This study aimed to develop a new protocol for enhancement of the yield of&#xa0;Poly β-hydoxy Butyric Acid (PHB) from the cyanobacterium <i>Spirulina(Arthrospira) platensis</i>. In the first step, the biomass produced in amended aquaculture wastewater wastewater showed a PHB content of 4.56 ± 0.087% of the dry biomass. However, second step cultivation using the harvested biomass of first culture cycle as inoculum in a newly developed culture medium enhanced PHB content by 69.73% compared to the first culture cycle. The findings presented&#xa0;on the utilization of wastewater grown Spirulina biomass for the recovery of value-added compound Poly-B-hydroxybutyric acid&#xa0;are novel as there is no report on a complete protocol for enhanced PHB productioin from wastewater cultured biomass of Spirulina. Given the growing demand of biobased plastic worldwide, this study provides baseline information for the development of low cost, bio-based plastic where PHB from wastewater grown biomass of Spirulina extracted through the two step process can be used for a cost-effective production of PHB for biobased plastic production.</p> Graphical Abstract <p></p>

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A Two-step Protocol for Enhanced Recovery of Poly-β-hydroxy Butyric Acid (PHB) from Spirulina Biomass Produced in Amended Aquaculture Wastewater

  • 期刊论文

  • 发表日期：

    2025年1月3日

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  • Anjana A,
  • Satya Prakash Shukla,
  • Saurav Kumar,
  • Kundan Kumar,
  • Vipul Singh Badguzar

摘要

This study aimed to develop a new protocol for enhancement of the yield of Poly β-hydoxy Butyric Acid (PHB) from the cyanobacterium Spirulina(Arthrospira) platensis. In the first step, the biomass produced in amended aquaculture wastewater wastewater showed a PHB content of 4.56 ± 0.087% of the dry biomass. However, second step cultivation using the harvested biomass of first culture cycle as inoculum in a newly developed culture medium enhanced PHB content by 69.73% compared to the first culture cycle. The findings presented on the utilization of wastewater grown Spirulina biomass for the recovery of value-added compound Poly-B-hydroxybutyric acid are novel as there is no report on a complete protocol for enhanced PHB productioin from wastewater cultured biomass of Spirulina. Given the growing demand of biobased plastic worldwide, this study provides baseline information for the development of low cost, bio-based plastic where PHB from wastewater grown biomass of Spirulina extracted through the two step process can be used for a cost-effective production of PHB for biobased plastic production.

Graphical Abstract