نتایج جستجو برای: phbv
تعداد نتایج: 240 فیلتر نتایج به سال:
The equilibrium adsorption of bovine serum albumin (BSA) on poly-3-hydroxybutyrate (PHB) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) surfaces was studied at different solution concentrations. data were fitted to the Langmuir Freundlich models. protein behaviour further investigated by analysing conformation surface adsorbed BSA using Fourier transform infrared (FTIR) spectroscopy wi...
In this study, three common biodegradable plastics, namely, poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV), poly(butylene succinate) (PBS) and adipate-co-terephthalate) (PBAT) were all buried in a mixture of landfill soil wastewater sludge incubated under thermophilic (61°C) oxygen-limited conditions. At the end 90-day test, degradation ranking order was PHBV > PBS PBAT. Only completely deg...
Polyhydroxyalkanoates (PHAs) are a class of biodegradable polyoxoesters synthesized from acetyl-CoA that naturally accumulate as intracellular granules in a diverse range of bacteria. Biosynthesis of the simplest PHA (PHB, poly-3-hydroxybutyrate) can be accomplished though the action of three enzymes, beta-ketothiolase, acetoacetyl-CoA reductase and PHA polymerase. We constructed plasmids that ...
tissue engineering is defined as the designing and engineering of structures to rebuild and repair a body damaged tissue. scaffolding poly hydroxy butyrate valraty (phbv) has shown good biocompatibility and biodegradable properties. nanofibers have improved the performance of biomaterials, and could be considered effective. one of the important methods for designing nanofiber scaffold is the el...
Production of novel polyhydroxyalkanoates (PHAs), biodegradable polymers for biomedical applications, and biomaterials based on them is a promising trend in modern bioengineering. We studied the ability of an effective strain-producer Azotobacter chroococcum 7B to synthesize not only poly(3-hydroxybutyrate) homopolymer (PHB) and its main copolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (P...
BACKGROUND Advances in nanostructure materials are leading to novel strategies for drug delivery and targeting, contrast media for magnetic resonance imaging (MRI), agents for hyperthermia and nanocarriers. Superparamagnetic iron oxide nanoparticles (SPIONs) are useful for all of these applications, and in drug-release systems, SPIONs allow for the localization, direction and concentration of d...
A strain of Bacillus pumilus BP-171 with the ability heterotrophic nitrification-aerobic denitrification was isolated from a shrimp culture pond and showed good under laboratory conditions. In order to investigate effects its combinations different carbon sources, i.e., poly-3-hydroxybutyrate-co-3-hydroxyvalerate (PHBV) molasses, on growth performance shrimp, water quality bacterial community i...
Multilayer biopapers composed of two electrospun layers poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) were impregnated, at the inner side one layers, with cellulose nanocrystals (CNCs) and their composites hydrocolloids, to develop high-barrier fully biobased structures. The study aimed for first time comparing impregnation fibers several biopolymer solutions. Thus, neat CNCs, CNCs mixed ...
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