Polyhydroxyalkanoates (PHAs) Production from Volatile Fatty Acids (VFAs) from Organic Wastes by Pseudomonas oleovorans

This study aimed to investigate the production of polyhydroxyalkanoates (PHAs), a biodegradable polymer from organic wastes by Pseudomonas oleovorans. Volatile fatty acids (VFAs) from acidogenic fermentations of chicken manure (VFAs-CM) and potato peels (VFAs-PP), rich in organic matter majorly acet...

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Bibliographic Details
Published in:Fermentation (Basel) 2021-12, Vol.7 (4), p.287
Main Authors: Aremu, Mujidat O., Ishola, Mofoluwake M., Taherzadeh, Mohammad J.
Format: Article
Language:English
Subjects:
Acidogenic fermentation
Bacteria
Biodegradability
Biomass
Biopolymers
Carbon
Cell growth
Creeks & streams
Fatty acids
Glucose
Isomerization
Manures
Microorganisms
Organic matter
Organic wastes
Polyhydroxyalkanoates
Polymers
Potatoes
Pseudomonas oleovorans
Resource Recovery
Resursåtervinning
Sensors
Thermal stability
Volatile fatty acids
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Summary:This study aimed to investigate the production of polyhydroxyalkanoates (PHAs), a biodegradable polymer from organic wastes by Pseudomonas oleovorans. Volatile fatty acids (VFAs) from acidogenic fermentations of chicken manure (VFAs-CM) and potato peels (VFAs-PP), rich in organic matter majorly acetic (49.9%), butyric (15%) and propionic acids (11.1%) were utilized as substrates for microbial processes. During 72 h of cultivations, samples were withdrawn at intervals and analyzed for cell growth parameters, PHAs accumulation and polymeric properties. The highest biopolymer accumulation (0.39 g PHAs/g DCW) was achieved at 48 h of cultivation from medium containing VFAs-PP as the sole source of carbon. On characterization, the produced biopolymers were shown to be semi-crystalline of carbonyl C=O group. Additionally, thermogravimetric analysis (TGA) showed that the produced biopolymers demonstrated the capability to withstand thermal degradation above prescribed temperatures at which cross-linking isomerization reaction occurs, which is a vital property denoting the thermal stability of biopolymer.
ISSN:2311-5637
2311-5637
DOI:10.3390/fermentation7040287