Article ; Online: Consolidated bioprocessing of plant biomass to polyhydroxyalkanoate by co-culture of Streptomyces sp. SirexAA-E and Priestia megaterium.
2023 Volume 376, Page(s) 128934
Abstract: Polyhydroxyalkanoate (PHA) production from plant biomass is an ideal way to realize sustainable PHA-based bioplastic. The present study demonstrated consolidated bioconversion of plant biomass to PHA by co-culturing two specialized bacteria, cellulolytic ...
Abstract | Polyhydroxyalkanoate (PHA) production from plant biomass is an ideal way to realize sustainable PHA-based bioplastic. The present study demonstrated consolidated bioconversion of plant biomass to PHA by co-culturing two specialized bacteria, cellulolytic Streptomyces sp. SirexAA-E and PHA producing Priestia megaterium. In monoculture, S. sp. SirexAA-E does not produce PHA, while P. megaterium did not grow on plant polysaccharides. The co-culture showed poly(3-hydroxybutyrate) (PHB) production using purified polysaccharides, including cellulose, xylan, mannan and their combinations, and plant biomass (Miscanthus, corn stalk and corn leaves) as sole carbon sources, confirmed by GC-MS. The co-culture inoculated with 1:4 (v/v) ratio of S. sp. SirexAA-E to P. megaterium produced 40 mg PHB/g Miscanthus using 0.5% biomass loading. Realtime PCR showed ∼85% S. sp. SirexAA-E and ∼15% P. megaterium in the co-culture. Thus, this study provides a concept of proof for one-pot bioconversion of plant biomass into PHB without separate saccharification processes. |
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MeSH term(s) | Polyhydroxyalkanoates ; Biomass ; Streptomyces/genetics ; Coculture Techniques ; Plants ; Polysaccharides ; Poaceae |
Chemical Substances | Polyhydroxyalkanoates ; Polysaccharides |
Language | English |
Publishing date | 2023-03-20 |
Publishing country | England |
Document type | Journal Article |
ZDB-ID | 1065195-0 |
ISSN | 1873-2976 ; 0960-8524 |
ISSN (online) | 1873-2976 |
ISSN | 0960-8524 |
DOI | 10.1016/j.biortech.2023.128934 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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