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Production of polyhydroxybutyrate (PHB) in Scenedesmus acutus using a low-cost substrate
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Researchers cultivated the microalga Scenedesmus acutus on low-cost substrates to produce polyhydroxybutyrate (PHB), a biodegradable bioplastic, demonstrating a cost-effective route toward replacing conventional petroleum-based plastics that persist as microplastic pollutants.
The importance of conventional plastics is undeniable; however, their non-biodegradability makes them one of the biggest environmental problems. Among the alternatives to mitigate environmental damages, the production of polyhydroxyalkanoates (PHB) provides a biodegradable solution, additional...
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A Review of PHB Production by Cyanobacteria and Its Applications
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This review examines cyanobacteria as photoautotrophic producers of polyhydroxybutyrate (PHB) bioplastic, summarizing how nutrient-stress conditions stimulate PHB accumulation and evaluating the cost-effectiveness and sustainability of using cyanobacteria as an alternative to conventional feedstocks for biodegradable plastic production.
Microalgal media engineering for optimization of bioplastic (PHB) yield
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Researchers optimized polyhydroxybutyrate (PHB) bioplastic production in the microalga Scenedesmus sp. using response surface methodology and heterotrophic cultivation, achieving a PHB yield of 3.2% under optimized nitrogen and carbon conditions and 4.9% with sonication pretreatment — demonstrating that nutrient regulation and cell disruption strategies can meaningfully improve algae-derived bioplastic yields.
Poly-β-Hydroxybutyrate Production by the Cyanobacterium Scytonema geitleri Bharadwaja under Varying Environmental Conditions
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A cyanobacterium (blue-green alga) was found to produce a natural biodegradable plastic called PHB, with production rates affected by temperature, pH, and carbon source. This could be relevant to developing bio-based alternatives to petroleum-derived plastics.
Screening, identification and characterisation of Polyhydroxybutyrate producing bacteria from garden soil
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Researchers screened soil bacteria for their ability to produce polyhydroxybutyrate (PHB), a biodegradable biopolymer that can replace petroleum-based plastics. Five promising bacterial isolates were identified and characterized, with production conditions optimized. Scaling up microbial PHB production from inexpensive soil microbes is an important step toward making biodegradable plastic alternatives cost-competitive with conventional plastics.
Characterization of Polyhydroxybutyrate Producing Bacterium Isolated from Sewage Sample
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Researchers identified and characterized bacterial strains isolated from sewage samples that are capable of producing polyhydroxybutyrate (PHB), a biodegradable thermoplastic. The study screens natural microbial communities for strains useful in sustainable bio-based plastic production.
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