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Toward Sustainable Polyhydroxyalkanoates: A Next-Gen Biotechnology Approach.

Vipin Chandra Kalia1, Rahul Vikram Singh1, Chunjie Gong2

  • 1Department of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.

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Extremophiles, like halophiles, offer a sustainable and cost-effective method for producing polyhydroxyalkanoates (PHAs), biodegradable plastics. Advances in biotechnology enhance yields and scalability for reduced plastic pollution.

Keywords:
environmental sustainabilityextremophilesgreen technologyindustrial biotechnologyindustrial waste valorizationpolyhydroxyalkanoatespolymers

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Area of Science:

  • Biotechnology and Materials Science
  • Microbiology and Environmental Science

Background:

  • Polyhydroxyalkanoates (PHAs) are biodegradable biopolymers offering sustainable alternatives to petroleum-based plastics.
  • Traditional PHA production faces challenges in cost and scalability due to reliance on refined carbon sources and pure cultures.
  • Extremophilic microorganisms, particularly halophiles, present a promising avenue for cost-effective and large-scale PHA manufacturing.

Purpose of the Study:

  • To explore the potential of extremophiles for sustainable and economical PHA production.
  • To highlight advancements in metabolic engineering and synthetic biology for enhancing PHA yields.
  • To discuss the integration of industrial biotechnology with AI and eco-friendly processing for scalability.

Main Methods:

  • Utilizing extremophiles (e.g., halophiles) that thrive in harsh conditions, reducing contamination and sterilization needs.
  • Employing metabolic engineering, synthetic biology, and CRISPR-based genome editing to optimize microbial PHA production.
  • Investigating alternative, cost-effective feedstocks like biowaste, syngas, methane, and CO₂.
  • Integrating AI-driven fermentation and eco-friendly downstream processing for industrial-scale applications.

Main Results:

  • Extremophiles reduce operational costs and contamination risks in PHA bioproduction.
  • Optimized metabolic flux and cell morphology through genetic engineering significantly enhance PHA yields.
  • The use of diverse, low-cost feedstocks improves the economic feasibility of PHA manufacturing.
  • Successful industrial-scale PHA production using extremophiles like *Halomonas* spp. demonstrates commercial viability.

Conclusions:

  • Extremophiles are key to developing cost-effective, scalable, and sustainable polyhydroxyalkanoate (PHA) bioplastics.
  • Advancements in biotechnology and feedstock diversification are crucial for overcoming current production limitations.
  • Industrial biotechnology, integrating extremophiles and AI, offers a pathway to significantly reduce plastic pollution.