Microbial production of medium-chain length polyhydroxyalkanoates

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6 Citations (Scopus)

Abstract

Medium-chain-length poly(hydroxyalkanoates), mcl-PHAs, are naturally produced polymers characterized by material properties that include low crystallinity and low melting and glass transition temperatures, which render them suitable for diverse applications. These biodegradable and biocompatible biopolymers are accumulated as intracellular energy and carbon reserves by a wide range of bacteria, mainly, of the genus Pseudomonas. Despite their valuable properties, mcl-PHAs commercial development is still limited, mostly due to the high costs associated with their production and extraction. To overcome such problems, several approaches are being pursued comprising: the search for higher yielding strains, both wild-type and engineered bacteria; the utilization of low-cost feedstocks, such as wastes; and the development of environmentally and economically sustainable downstream procedures for polymer recovery and purification. Intensive research is also being done for the development of mcl-PHA-based materials for use in different areas, especially in high-value applications, such as biomedicine and drug delivery, in which the product's performance may justify its higher cost.

Original languageEnglish
Pages (from-to)393-407
Number of pages15
JournalProcess Biochemistry
Volume102
DOIs
Publication statusPublished - Mar 2021

Keywords

  • Bacterial cultivation
  • Extraction
  • Medium-chain length poly(hydroxyalkanoates) (mcl-PHAs)
  • Metabolic pathways

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