Fermentation development using fruit waste derived mixed sugars for poly(3-hydroxybutyrate) production and property evaluation

Bioresource Technology, Journal Year: 2023, Volume and Issue: 382, P. 129077 - 129077

Published: April 23, 2023

Language: Английский

---

Development of extrusion blown films of poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) blends for flexible packaging

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: 141(16)

Published: Jan. 29, 2024

Abstract Poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV) is a biodegradable polymer with significant potential for use in food packaging. However, its limited melt strength poses challenge when employing film‐blowing techniques to produce flexible To overcome this obstacle, we developed blends consisting of 70 wt% PHBV and 30 poly(butylene‐co‐succinate‐co‐adipate) (PBSA). Organic peroxides such as dicumyl peroxide 2,5‐dimethyl‐2,5‐di‐(tert‐butylperoxy)hexane, were utilized reactive compatibilizers enhance the interfacial adhesion between polymers. Additionally, acetyl tributyl citrate (ATBC) was employed plasticizer improve processability ductility. The inclusion organic resulted formation long‐branched structures, confirmed by van‐Gurp‐Palmen plot. flow index decreased from 9.8 g/10 min without ATBC 15.5 ATBC. Successful production blown PHBV/PBSA films achieved on pilot scale (bubble height 180 cm). These exhibited heat‐sealing capability increased impact (7.7 kJ/m 2 ). Moreover, maintained maximum elongation at break 4% during 3‐month storage experiment frozen food. Food safety assessed through overall migration experiments, non‐plasticized received approval. In conclusion, compatibilized demonstrate great materials manufacturing film‐blown

Language: Английский

---

New tartrate and α-tocopherol based environmentally friendly plasticizers for improvement of the ductility of polylactic acid

Polymer, Journal Year: 2024, Volume and Issue: 308, P. 127361 - 127361

Published: July 5, 2024

This study focuses on developing environmentally friendly plasticized poly(lactide) (PLA) formulations using tartaric acid and α-tocopherol at 20 wt%. The extrusion injection molding processes demonstrated the industrial applicability of these plasticizers. Mechanical tests revealed positive results for tartrate-based plasticizers, with elongation break surpassing 220 %, while succinate achieved 170 %. However, acetate showed limited PLA plasticization. Field emission scanning electron microscopy confirmed plasticization in fractured surfaces. Thermal analysis indicated a reduction PLA's glass transition temperature (Tg) from 60 °C to around 30 underscoring tartrates' exceptional efficiency. cold crystallization (Tcc) decreased all samples due enhanced chain mobility. Thermomechanical dimensional shrinkage, dimethyl tartrate (DMT) causing less pronounced effects. Generally, tartrates yielded superior properties, attributed their lower molecular weight compared α-tocopherol-derived Notably, plasticizers employed are an eco-friendly approach improve processability enhancing ductile properties.

Language: Английский

---

Ecofriendly bioplastics from biowaste: Antimicrobial and functional enhancements for sustainable packaging

European Polymer Journal, Journal Year: 2024, Volume and Issue: 221, P. 113557 - 113557

Published: Nov. 5, 2024

Language: Английский

---

An introduction to innovative food packaging and processing technologies, the present and the future

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. xxix - lxxx

Published: Jan. 1, 2025

Language: Английский

---

Transforming Agricultural Food Waste Into Bioplastics: Methods, Potential, and Technological Advances

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

Abstract The improper disposal of agricultural food waste (AFW) and its associated plastic packaging significantly exacerbates environmental degradation, including pollution, greenhouse gas emissions, loss valuable resources, while imposing substantial economic burdens. These pressing challenges have spurred advancements in bioplastics as sustainable eco‐friendly alternatives to conventional plastics. Here, the potential AFW, rich biopolymers such starch cellulose, a renewable feedstock is examined for polylactic acid, polybutylene succinate, polyhydroxyalkanoates. It explores characteristics these bioplastics, focusing on production techniques extraction‐based processes, microbial fermentation, fermentation combined with polymerization, synthesis from volatile fatty acids. Additionally, role AFW pretreatment methods, physical, chemical, biological, enzymatic approaches, enhancing conversion efficiency analyzed. it highlighted that recent bioplastic improved efficiency, biodegradability, scalability, offering viable substitute traditional findings demonstrate valorizing not only addresses but also promotes sustainability circular economy principles, paving way greener industries reduced ecological impact.

Language: Английский

---

Regulatory Frameworks and State-of-the-Art Decontamination Technologies for Recycled Polystyrene for Food Contact Applications

Polymers, Journal Year: 2025, Volume and Issue: 17(5), P. 658 - 658

Published: Feb. 28, 2025

Recycling post-consumer plastics for food contact applications is crucial the circular economy; however, it presents challenges due to potential contamination and regulatory requirements. This review outlines current European U.S. legislation governing recycled in materials (FCM). The Food Safety Authority (EFSA) mandates evaluation authorization of recycling processes. includes examining input/output flows, prioritizing use previously authorized FCM, assessing decontamination efficiency through material-specific challenge tests. Additionally, evaluates new installations intended apply approved technologies. In contrast, voluntary submission Drug Administration (FDA) provides guidelines with general advice on methodologies recommended parameters Applications EFSA non-PET materials, such as HDPE, PP, PS, are reviewed, highlighting each material. Recycled its lower diffusivity compared polyolefins shows promise packaging, a next material Union. Decontamination technologies PS explored, including super-cleaning processes, solvent extraction, industrial methods. emphasizes need multidisciplinary collaboration address uncertainties around contaminants ensure safety applications.

Language: Английский

---

Exploring simultaneous production of poly(3-hydroxybutyrate) and exopolysaccharides in cyanobacteria-rich microbiomes

New Biotechnology, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

The aim of this study was to explore the viability dual production poly(3-hydroxybutyrate) (PHB) and exopolysaccharides (EPS) by seven microbiomes rich in cyanobacteria. Our initial experiments involved screen for EPS-producing candidates examine impact salinity acetate on EPS synthesis. Salinity's known influence acetate's role enhancing PHB guided our parameter selection. Surprisingly, neither introduction an external carbon source (acetate) nor exposure abiotic stressor (salt) significantly altered synthesis rates, which ranged from 25 150mg·L-1, or its composition, with glucose being dominant sugar component. Scaling up a 3L photobioreactor, we achieved simultaneous biopolymer production, reaching 205mg·L-1 87mg·L-1 PHB. Additionally, presence uronic acid facilitated biomass flocculation, streamlining separation process, potentially reducing associated time costs.

Language: Английский

---

Two Decades Research on Cyanobacterial PHB: Challenges and Opportunities

Published: Jan. 1, 2025

Language: Английский

---

Microbial production of thermoplastic-targeted biopolymer composites made of polyhydroxybutyrate and protein by Cupriavidus necator CECT 4623 strain: Bacterial accumulation, thermal characterizations, direct extrusion processing and mechanical properties

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112277 - 112277

Published: March 1, 2025

Language: Английский

---