Recent advances in biopolymer synthesis, properties, & commercial applications: a review

Process Biochemistry, Год журнала: 2024, Номер 145, С. 261 - 287

Опубликована: Июль 2, 2024

Язык: Английский

---

Production of polyhydroxyalkanoates by engineered Halomonas bluephagenesis using starch as a carbon source

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 261, С. 129838 - 129838

Опубликована: Фев. 2, 2024

Язык: Английский

---

Novel enhancement of interfacial interaction and properties in biodegradable polymer composites using green chemically treated spent coffee ground microfiller

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 266, С. 131333 - 131333

Опубликована: Апрель 3, 2024

Язык: Английский

---

Exploring New Strategies for Optimizing the Production of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from Methane and VFAs in Synthetic Cocultures and Mixed Methanotrophic Consortia

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(11), С. 4690 - 4699

Опубликована: Март 4, 2024

In this work, the potential of a synthetic coculture and mixed methanotrophic consortium to synthesize poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) from renewable waste-based feedstocks was assessed batchwise. Methylocystis parvuscocultivated with Rhodococcus opacus Methylocystis-enriched culture previously grown on methane were subjected nutrient starvation in medium enriched valeric acid (30% w w–1 Ctot) or VFAs mixture containing acetic, propionic, butyric, acids (15% under CH4:O2 air atmosphere. For all test series, pH adjusted 7 after adding cosubstrates, negligible substrate consumption polymer production considered end point trial. Results showed that promoted PHBV accumulation both cultures regardless Interestingly, supported only presence methane. The highest contents for consortium, equal 73.7 ± 2.5% 49.6 13% w–1, respectively, obtained mixture. This study demonstrates suitability cocultures biobased cosubstrates sustainable biodegradable PHBV.

Язык: Английский

---

Production of poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from methane and volatile fatty acids: properties, metabolic routes and current trend

The Science of The Total Environment, Год журнала: 2024, Номер 927, С. 172138 - 172138

Опубликована: Апрель 4, 2024

Polyhydroxyalkanoates (PHAs) are biobased and biodegradable polymers that could effectively replace fossil-based non-biodegradable plastics. However, their production is currently limited by the high costs, mainly due to costly carbon sources used, low productivity quality of materials produced. A potential solution lies in utilizing cheap renewable as primary feedstock during biological PHAs, paving way for a completely sustainable economically viable process. In this review, opportunities challenges related polyhydroxyalkanoates using methane volatile fatty acids (VFAs) substrates were explored, with focus on poly(3-hydroxybutyrate) poly(3-hydroxybutyrate-co-3-hydroxyvalerate). The discussion reports current knowledge about promising Type II methanotrophs, impact process parameters such limiting nutrients, CH4:O2 ratio temperature, type co-substrate its concentration. Additionally, strategies developed until now enhance PHA yields also discussed.

Язык: Английский

---

Optimized Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) Production by Moderately Haloalkaliphilic Bacterium Halomonas alkalicola Ext

International Journal of Polymer Science, Год журнала: 2024, Номер 2024, С. 1 - 17

Опубликована: Янв. 19, 2024

Polyhydroxyalkanoates (PHAs) are biodegradable and biocompatible polymers that produced by microorganisms as storage materials under limited nutrition excess carbon. These PHAs have been found to be ideal for replacing synthetic plastics use in packaging biomedical applications. In this study, an alkaliphilic moderately halophilic bacterium Halomonas alkalicola Ext was isolated from Lake Simbi Nyaima western Kenya investigated PHA production. Sudan Black B Nile Red A staining showed had distinct ability accumulation of PHAs. To optimize production, the grown submerged fermentation varying culture conditions different sources concentrations carbon nitrogen. With one-factor-at-a-time (OFTA) approach, optimal yields were obtained after 72 hours at a pH 10.0, temperature 35°C, 2.5% (w/v) NaCl. The yielded highest biomass, amounts on 2% galactose 0.1% ammonium sulfate nitrogen, respectively. record yield 0.071 g g-1 with titer $1.419\pm 0.09\text{g}/\text{L}$ achieved 3.397 g/L equivalent 41.8% content. Using response surface methodology, increased 1.5% 1.44 g/L, while content improved 1.1-fold 45.57%. Polymer analysis revealed extracted poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) ( id="M2">3−HB:3−HV=92:8 ) two copolymer subunits 3-hydroxyvaryrate (3-HB) 3-hydroxybutyrate (3-HV). attained efficient conversion into PHBV high salinity alkalinity conditions.

Язык: Английский

---

Biosynthesis of biodegradable plastic, poly(3HB-co-3HP), using methane as sole carbon source in metabolically engineered type II methanotroph, Methylosinus trichosporium OB3b

New Biotechnology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

---

Polyhydroxyalkanoates (PHAs) and its copolymer nanocarrier application in cancer treatment: An overview and challenges

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 277, С. 134201 - 134201

Опубликована: Июль 26, 2024

Язык: Английский

---

Biorefinery of volatile fatty acids for the synthesis of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) using Paracoccus sp. TOH: Fermentation performance and metabolic pathway

Journal of Cleaner Production, Год журнала: 2024, Номер 441, С. 140801 - 140801

Опубликована: Янв. 23, 2024

Язык: Английский

---

Techno-economic assessment of biopolymer production from methane and volatile fatty acids: effect of the reactor size and biomass concentration on the poly(3-hydroxybutyrate-co-3-hydroxyvalerate) selling price

The Science of The Total Environment, Год журнала: 2024, Номер 929, С. 172599 - 172599

Опубликована: Апрель 22, 2024

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) is a biobased and biodegradable polymer that could efficiently replace fossil-based plastics. However, its widespread deployment slowed down by the high production cost. In this work, techno-economic assessment of process for producing poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from low-cost substrates, such as methane valeric acid derived anaerobic digestion organic wastes, proposed. Several strategies cost abatement, use mixed consortium line reagent recycling during downstream, were adopted. Different scenarios in terms production, 100 to 100,000 t/y, analysed, and, each case, effect reactor volume (small, medium large size) on selling price was assessed. addition, biomass concentration also considered. Results show minimum plant with t/y capacity, accounting 18.4 €/kg, highly influenced since it can be reduced up 8.6 €/kg increasing total suspended solids 5 30 g/L, This adjustment aligns breakeven point PHBV reported average commercial price.

Язык: Английский

---