Results 41 to 50 of about 2,606 (175)

Production of poly-(3-hydroxybutyrate-co-3-hydroxyvalerate) in a recombinant Escherichia coli strain [PDF]

Applied and Environmental Microbiology, 1992
An Escherichia coli strain has been constructed that produces the copolymer poly-(3-hydroxybutyrate-co-3-hydroxyvalerate) P(HB-co-HV). This has been accomplished by placing the PHB biosynthetic genes from Alcaligenes eutrophus into an E. coli fadR atoC(Con) mutant and culturing the strain in M9 minimal medium containing glucose and propionate.
S, Slater, T, Gallaher, D, Dennis
openaire   +2 more sources

Citric Acid‐Crosslinked Chitosan Coatings Incorporating Curcumin for Enhancement of Antioxidant and Antimicrobial Properties

Journal of Vinyl and Additive Technology, Volume 32, Issue 6, Page 1573-1592, November 2026.
A fully bio‐based coating was developed using Chitosan, Citric acid, and Curcumin. Citric acid acts simultaneously as a green solvent and non‐toxic crosslinker. Dry Heat Treatment enhances water resistance and thermal stability, creating an active packaging system with dual antioxidant and antimicrobial properties to extend food shelf‐life.
Miriam Cappello, Cheherazade Trouki, Niccoletta Barbani, Maria J. Lopez, Ana J. Toribio‐Gallardo, Caterina Cristallini, Neetu Malik, Damiano Rossi, Maurizia Seggiani, Patrizia Cinelli   +9 more
wiley   +1 more source

Improving the Mechanical Properties of Biodegradable Polyhydroxyalkanoates via PHA–PHA Block‐Copolymer Synthesis

Chemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.
Covalent linkage of a highly crystalline PHBV with a ductile P3HB4HB is shown to produce block copolymers with markedly enhanced extensibility and toughness, outperforming equivalent blends. The results demonstrate that polymer architecture, not composition alone, governs mechanical response, offering a route to biodegradable materials that combine ...
Katrin Blandine Kockler, Paul Lant, Steven Pratt, Bronwyn Laycock   +3 more
wiley   +1 more source

Superparamagnetic Poly (3-hydroxybutyrate-co-3 hydroxyvalerate) (PHBV) nanoparticles for biomedical applications.

Electronic Journal of Biotechnology, 2013
Background: The progress in material science and the recent advances in biodegradable/biocompatible polymers and magnetic iron oxide nanoparticles have led to develop innovative diagnostic and therapeutic strategies for diseases based on multifunctional nanoparticles, which include contrast medium for magnetic resonance imaging, agent for hyperthermia
Vilos, Cristian, Gutiérrez, Marlen, Escobar, Roberto A., Morales, Francisco, Denardin, Juliano C., Velasquez, Luis, Altbir, Dora   +6 more
openaire   +7 more sources

Coastal and deep-sea biodegradation of polyhydroxyalkanoate microbeads

Scientific Reports
Microbeads find widespread usage in personal care items and cosmetics, serving as exfoliants or scrubbing agents. Their micro-scale size poses challenges in effective drainage capture and given their origin from non-biodegradable oil-based plastics, this
Natsumi Hyodo, Hongyi Gan, Manikandan Ilangovan, Satoshi Kimura, Ken-ichi Kasuya, Noriyuki Isobe, Tadahisa Iwata   +6 more
doaj   +1 more source

Measuring Temporal Variations of Nucleotide Pools in Microbial Granular Biofilm

Helvetica Chimica Acta, Volume 109, Issue 10, October 2026.
The developed metabolomics workflow enables quantification of energy nucleotides in complex microbial biofilms. The method provides a foundation for investigating rapid metabolic responses to dynamic environmental conditions. ABSTRACT Microbial communities often face environmental fluctuations that occur on timescales much shorter than their growth ...
Jitske M. van Ede, Timothy Páez‐Watson, Mark C. M. van Loosdrecht, Martin Pabst   +3 more
wiley   +1 more source

Polyethylene/ poly(3-hydroxybutyrate-co-3-hydroxyvalerate /carbon nanotube composites for eco-friendly electronic applications

Polymer Testing, 2022
The development of new conducting composites, for electric and electronic applications, with lower environmental impact is a relevant issue. Blending poly (3-hydroxybutyrate-co-3-hydroxyvalerate (PHBV) with high-density polyethylene (HDPE), 50/50 HDPE ...
David Fernández Armada, Victoria González Rodríguez, Pedro Costa, Senentxu Lanceros-Mendez, Goretti Arias-Ferreiro, María-José Abad, Ana Ares-Pernas   +6 more
doaj   +1 more source

Designing PLA/PHBV Implants With Degradation Matched to Normal or Inflammatory Tissues

Journal of Applied Polymer Science, Volume 143, Issue 36, September 20, 2026.
PLA/PHBV blends are investigated under simulated normal and pathological conditions. Multivariate statistical analysis decouples the competing effects of water‐uptake‐driven hydrolysis and crystallinity‐imposed barriers. Melt‐state rheological parameters serve as structural probes linking phase morphology to degradation kinetics. A semi‐empirical model
Luyao Gao, Aleksey D. Drozdov, Yaqing Liu   +2 more
wiley   +1 more source

Preparation and characterization of flurbiprofen-loaded poly(3-hydroxybutyrate-co-3-hydroxyvalerate) microspheres [PDF]

Journal of Microencapsulation, 2008
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) microspheres containing flurbiprofen were prepared by an oil-in-water emulsion solvent evaporation method, in order to develop a particulate drug delivery system for localized administration. A response surface method (RSM) using a central composite design was employed to evaluate the effect of the ...
Coimbra, Patrícia A., Sousa, Hermínio C. de, Gil, Maria H.   +2 more
openaire   +3 more sources

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Blends with Poly(caprolactone) and Poly(lactic acid): A Comparative Study

Polymers, 2023
Poly(hydroxybutyrate-co-hidroxyvalerate) (PHBV) is a biodegradable polymer, which is a potential substitute for plastics made from fossil resources. Due to its practical interest in the field of tissue engineering, packaging, sensors, and electronic devices, the demand for PHBV with specific thermal, electrical, as well as mechanical requirements is ...
Carmen R. Tubio, Xabier Valle, Estela Carvalho, Joana Moreira, Pedro Costa, Daniela M. Correia, Senentxu Lanceros-Mendez   +6 more
openaire   +2 more sources