| Title |
Microbial valorization of oil-based substrates for polyhydroxyalkanoates (PHA) production-Current strategies, status, and perspectives |
| ID_Doc |
10504 |
| Authors |
Lim, SW; Kansedo, J; Tan, IS; Tan, YH; Nandong, J; Lam, MK; Ongkudon, CM |
| Title |
Microbial valorization of oil-based substrates for polyhydroxyalkanoates (PHA) production-Current strategies, status, and perspectives |
| Year |
2023 |
| Published |
|
| DOI |
10.1016/j.procbio.2023.05.013 |
| Abstract |
With the rising interest in developing polyhydroxyalkanoate (PHA) bioplastics as an auspicious substitute for conventional plastics, the exploitation of low-cost oil substrates for PHA biosynthesis has become popular recently. In view of the paucity of feasibility studies on lipid-based PHA production, this paper aims to provide an overview of the PHA production from diverse lipid-rich sources, covering the PHA production efficiencies using different plausible fermentation strategies and the key influencing factors for oil-based PHA production. Considering the high conversion efficiency (97.5% of the theoretical PHA yield), direct fermentation of oil has shown great promise for PHA industrialization. Plant oils which could achieve a high PHA yield (0.25-0.77 g/g) are better carbon sources than waste cooking oil (0.15-0.28 g/g). In addition to providing information on the potential enhancement tools (i.e., mixed cultures, metabolic engineering, and kinetic studies) for lipid-based PHA production, this paper also reviews the techno-economic and life cycle assessment of PHA production in comparison to the conventional plastics. Besides, technical challenges and future perspectives for the commer-cialization of oil-based PHA production have been discussed (specifically targeting on the concerns of incon-sistent production efficiency, complex recovery process, and high production cost), offering further insights towards developing a sustainable circular economy. |
| Author Keywords |
Polyhydroxyalkanoates; Biodegradable plastics; Lipid -rich oil; Fermentation strategy; Kinetic studies |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001013512800001 |
| WoS Category |
Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Engineering, Chemical |
| Research Area |
Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Engineering |
| PDF |
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