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61,005 resultsShowing papers similar to Selection of polyhydroxybutyrate-producing bacteria and their polyhydroxybutyrate production using cassava and glycerol as carbon sources
ClearValorization of agro-industrial waste from the cassava industry as esterified cellulose butyrate for polyhydroxybutyrate-based biocomposites
This study produced biodegradable biocomposites from cassava pulp microcrystalline cellulose and in-house synthesized polyhydroxybutyrate (PHB) biopolymer. The cassava agro-industrial waste-based materials offer a sustainable alternative to petroleum-based plastics for packaging applications, with the potential to reduce environmental microplastic accumulation.
A Review on Enhancing Cupriavidus necator Fermentation for Poly(3-hydroxybutyrate) (PHB) Production From Low-Cost Carbon Sources
This review summarizes strategies for enhancing poly(3-hydroxybutyrate) bioplastic production by Cupriavidus necator using low-cost carbon sources, covering metabolic engineering approaches and fermentation optimization as sustainable alternatives to conventional plastics.
Microbial Production of Biopolymer Polyhydroxybutyrate (PHB): Current Challenges and its Application
This review examines the microbial production of polyhydroxybutyrate (PHB), a biodegradable polyester produced by microorganisms as an energy and carbon storage compound, covering current production challenges and industrial applications. The study discusses PHB as a biopolymer alternative to petroleum-based plastics, addressing cost, yield, and scalability barriers limiting its commercial adoption.
Characterization and Biotechnological Potential of Intracellular Polyhydroxybutyrate by Stigeoclonium sp. B23 Using Cassava Peel as Carbon Source
An Amazonian microalga (Stigeoclonium sp.) was found capable of producing intracellular polyhydroxybutyrate bioplastic using cassava peel hydrolysate as a low-cost carbon source, demonstrating a viable route for bioplastic production from agricultural waste.
Synthesis of Polyhydroxybutyrate (PHB) by Fermentation of Whey and Pineapple Peel with Bacillus subtilis
Researchers evaluated agro-industrial wastes from Ecuador -- specifically cheese whey and pineapple peel -- as carbon sources for producing polyhydroxybutyrate (PHB) bioplastic through fermentation with Bacillus subtilis. The study found that these low-cost renewable substrates could support PHB synthesis, offering a sustainable alternative to petroleum-based plastics.
Isolation, Production, Extraction, Optimization and Fortification of PHB using Silver Nanoparticles from Lactobacillus Casei
Researchers isolated soil bacteria capable of producing the biopolymer polyhydroxybutyrate (PHB) as a biodegradable plastic substitute, optimizing PHB production from Lactobacillus casei and exploring fortification with silver nanoparticles to enhance material properties.
Enhanced production of biobased, biodegradable, Poly(3-hydroxybutyrate) using an unexplored marine bacterium Pseudohalocynthiibacter aestuariivivens, isolated from highly polluted coastal environment
Researchers isolated and characterised Pseudohalocynthiibacter aestuariivivens P96, a marine bacterium from a highly polluted coastal environment, finding it capable of producing poly(3-hydroxybutyrate) (PHB) at up to 4.73 g/L corresponding to 87% of total cell dry weight, representing a promising bio-based and biodegradable alternative to fossil-fuel plastics.
The Halophilic Bacterium Paracoccus haeundaensis for the Production of Poly(3-Hydroxybutyrate-co-3-Hydroxyvalerate) from Single Carbon Sources
This study demonstrated for the first time that Paracoccus haeundaensis can produce polyhydroxyalkanoates (PHAs) under nitrogen-limited conditions with glucose as carbon source, identifying it as a potential new bacterial host for biodegradable plastic production.
Scalable Biosynthesis & Recovery of Poly-3-Hydroxybutyrate Produced from Cotton-Derived Glucose by Ralstonia eutropha
Researchers optimised the biosynthesis and recovery of poly-3-hydroxybutyrate using cotton-derived glucose as a substrate with Ralstonia eutropha, addressing the high production costs that limit large-scale use of this biodegradable biopolymer alternative to petroleum-based plastics.
A Review of PHB Production by Cyanobacteria and Its Applications
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.
Microbial synthesis of eco-friendly polylactate plastic from low-cost agro-industrial wastes as an alternative to petrochemical-based plastic
This study isolated soil and food waste bacteria capable of producing polylactic acid (PLA) bioplastic from low-cost agricultural byproducts. PLA is a biodegradable alternative to petroleum-based plastics, and producing it from waste feedstocks improves both its economics and environmental profile.
Disruption of poly (3-hydroxyalkanoate) depolymerase gene and overexpression of three poly (3-hydroxybutyrate) biosynthetic genes improve poly (3-hydroxybutyrate) production from nitrogen rich medium by Rhodobacter sphaeroides
Bacterial genes were engineered to improve production of PHB, a natural biodegradable plastic substitute, in bacteria that grow without using sugar as a carbon source. More efficient bio-based plastic production could help reduce dependence on petroleum-derived plastics.
Isolation and characterisation of Methylocystis spp. for poly-3-hydroxybutyrate production using waste methane feedstocks
Researchers isolated two new strains of methane-eating bacteria capable of converting waste methane gas — from landfills and digesters — into poly-3-hydroxybutyrate (PHB), a biodegradable plastic alternative. This dual approach could simultaneously reduce greenhouse gas emissions and produce an eco-friendly substitute for conventional petroleum-based plastics.
The Effectiveness of Polyhydroxyalkanoate (PHA) Extraction Methods in Gram-Negative Pseudomonas putida U
Researchers evaluated different physical and chemical methods for extracting polyhydroxyalkanoates (PHAs), a type of bioplastic, from the bacterium Pseudomonas putida. They compared traditional solvent-based approaches with more sustainable alternatives to find cost-effective extraction techniques. The study contributes to making bioplastic production more commercially viable as an alternative to petroleum-based plastics.
Polyhydroxyalkanoates biosynthesis, resulting polymer structures, and plasticization
This review examines polyhydroxyalkanoates (PHAs), a class of biodegradable biopolymers synthesized by microorganisms, discussing strategies including plasticizers and monomer inclusion to overcome the brittleness and processing challenges of the most common PHA, poly(3-hydroxybutyrate).
Bacterial Production of Hydroxyalkanoates (PHA)
This review examines bacterial production of polyhydroxyalkanoates (PHA) as a biodegradable alternative to petroleum-based plastics, covering fermentation processes, scaling to industrial levels, and future trends, while noting that higher production costs currently prevent PHAs from competing commercially with conventional plastics.
The co-conversion of methane and mixtures of volatile fatty acids into poly(3-hydroxybutyrate-co-3-hydroxyvalerate) expands the potential of an integrated biorefinery
Researchers used a methane-consuming bacterium to simultaneously convert natural gas and food waste byproducts into PHBV, a biodegradable plastic alternative, achieving yields that varied depending on the mix of waste acids supplied. This integrated biorefinery approach could reduce reliance on conventional petroleum-based plastics by making biodegradable polymers from waste streams.
Metabolic Process and Types of Carbon Source leads to Desired Polyhydroxyalkanoate Properties
This review examines how different carbon sources and metabolic pathways influence the biosynthetic production of polyhydroxyalkanoates (PHAs), analyzing how carbon source selection and organism choice determine whether homo- or copolymers are produced and shape the resulting physical and chemical properties of these biodegradable plastics.
Exploiting sugar-rich feedstocks for sustainable polyhydroxyalkanoate production
Researchers investigated the use of sugar-rich agricultural feedstocks for sustainable production of polyhydroxyalkanoates (PHAs), evaluating these bacterial biopolymers as biodegradable alternatives to petrochemical plastics that contribute to microplastic pollution.
Scalable Biosynthesis and Recovery of Poly-3-Hydroxybutyrate Produced from Cotton-Derived Glucose by Cupriavidus necator
Researchers used cotton-derived glucose as feedstock for biosynthesis of poly-3-hydroxybutyrate (P3HB) by Cupriavidus necator in a 2-L bioreactor, finding that cotton-derived glucose produced more P3HB than commercial glucose with comparable thermal properties. A single-solvent extraction method was developed to simplify polymer recovery, supporting the potential for scaling up bio-based, biodegradable plastic production.
Production of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) by Haloferax mediterranei Using Candy Industry Waste as Raw Materials
Researchers explored using candy industry waste as a low-cost feedstock for the haloarchaeon Haloferax mediterranei to produce PHBV, a biodegradable polymer that could serve as an alternative to conventional plastics. They found that the microorganism could effectively convert sugar-rich waste streams into this bio-based material without requiring expensive precursor chemicals. The study presents a circular economy approach that simultaneously addresses food industry waste and plastic pollution.
Influence of Aeration Rate on Uncoupled Fed Mixed Microbial Cultures for Polyhydroxybutyrate Production
Researchers investigated how aeration rates affect the production of polyhydroxybutyrate, a biodegradable bioplastic, by mixed microbial cultures fed with waste-derived carbon sources. The study found that optimizing aeration in sequenced batch reactors can improve bioplastic yields while reducing energy costs. Evidence indicates that fine-tuning process parameters for microbial bioplastic production could make this sustainable alternative to conventional plastics more economically viable.
Poly(3-hydroxybutyrate) production by Rhodopseudomonas sp. S16-VOGS3 cells grown in digested sludge
Researchers demonstrated that photosynthetic bacteria can be grown using nutrient-rich wastewater sludge as a low-cost medium, producing a biodegradable plastic called PHB (polyhydroxybutyrate) when phosphate becomes scarce. This approach offers a way to create eco-friendly bioplastics from waste materials, reducing reliance on petroleum-based plastics.
Optimized Poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV) Production by Moderately Haloalkaliphilic Bacterium Halomonas alkalicola Ext
Researchers isolated a salt- and alkali-tolerant bacterium from a Kenyan lake and optimized its production of the biodegradable polymer PHBV as an alternative to conventional plastics. Through systematic optimization of growth conditions, they achieved a polymer yield of over 45% of the bacterial cell mass. The study demonstrates that extremophilic microorganisms can serve as efficient producers of biodegradable plastics suitable for packaging and biomedical applications.