Comparing Heterotrophic with Phototrophic PHA Production

Concurring or Complementing Strategies?

Authored by: Ines Fritz , Katharina Meixner , Markus Neureiter , Bernhard Drosg

The Handbook of Polyhydroxyalkanoates

Print publication date:  November  2020
Online publication date:  November  2020

Print ISBN: 9780367275594
eBook ISBN: 9780429296611
Adobe ISBN:

10.1201/9780429296611-15

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Abstract

Polyhydroxyalkanoates (PHA) are a class of biopolymers with interesting material properties and highly beneficial use in certain applications. This is the base for its market presence with a prospective increasing share over a long period. Biotechnological production with prokaryotes is, undoubtedly, the most promising way to go and may remain so for the near future. Regarding the use of substrates, three general strategies can be identified, similar to biorefinery concepts: (1) using sugar or starch as input (first-generation substrates), (2) using lignocellulosic biomass or other liquid and solid organic residues (waste streams) as input (second-generation substrates), and (3) biotechnology with photo- and autotrophic bacteria – using CO2 and sunlight as input (third-generation substrates).

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