Tissue engineering (TE) demands scaffolds that have the necessary resistance to withstand mechanical stresses once implanted in our body, as well excellent biocompatibility. Hydrogels are postulated interesting materials for this purpose, especially those made from biopolymers. In study, microstructure and rheological performance, functional biological properties of chitosan collagen hydrogels (CH/CG) crosslinked with different coupling agents, both natural such d-Fructose (F), genipin (G)...

The nanoparticles (NPs) synthesis poses an environmental problem: the formation of other toxic substances. An eco-friendlier alternative method based on use polyphenolic extracts is gaining interest due to their potential reduce metal salts for NPs without products. Thus, main objective this work was obtain zinc oxide (ZnO) from pepper rich in polyphenols. To end, polyphenol extraction process set-up using a response surface analysis different parameters involved (i.e. temperature, time,...

Nowadays, antioxidants and antibacterial activity play an increasingly vital role in biosystems due to the biochemical biological reactions that involve free radicals pathogen growth, which occur many systems. For this purpose, continuous efforts are being made minimize these reactions, including use of nanomaterials as bactericidal agents. Despite such advances, iron oxide nanoparticles still lack knowledge regarding their antioxidant capacities. This includes investigation effects on...

Recently, nanoparticle (NP) synthesis has evolved into a green nanotechnology field, requiring more methods for the eco-synthesis of nanoparticles due to high costs other chemical–physical methods.

Iron oxide nanoparticles (Fe

Hydrogels are considered good biomaterials for soft tissue regeneration. In this sense, collagen is the most used raw material to develop hydrogels, due its high biocompatibility. However, low mechanical resistance, thermal stability and pH instability have generated need look alternatives use. combination of with another (i.e., polysaccharides) can improve final properties hydrogels. For reason, main objective work was development hydrogels based on chitosan. The mechanical, microstructural...

Climate change and the enhancement of ecology have generated need to create packaging that is biodegradable and, at same time, allows food be preserved efficiently in order avoid accumulation plastic minimize waste. In this sense, protein-based bioplastics are a promising alternative, but due their limited properties they additional crosslinking compete with conventional plastics. Among them, physical special interest industry, as it does not generate toxicity problems. way, overall...

Nowadays, biopolymer-based films are being developed as an alternative to conventional plastic-based films, mainly because they non-toxic, flexible, inexpensive, and widely available. However, restricted in their applications due several deficiencies properties. Accordingly, the reinforcement of these materials with nanoparticles/nanofillers could overcome some shortcomings, especially those processed by green methods. Green synthesized zinc oxide nanoparticles (ZnO-NPs) highly suggested...

The union of nanoscience (nanofertilization) with controlled release bioplastic systems could be a key factor for the improvement fertilization in horticulture, avoiding excessive contamination and reducing price products found current market. In this context, objective work was to incorporate ZnO nanoparticles soy protein-based processed using injection moulding. Thus, concentration (0 wt%, 1.0 2.0 4.5 wt%) mould temperature (70 °C, 90 °C 110 °C) were evaluated through mechanical (flexural...

Currently, gelatin-based films are regarded as promising alternatives to non-environmentally friendly plastic for food packaging. Nevertheless, although they have great biodegradability, their weak mechanical properties and high solubility limit applications. In this way, the use of nanoparticles, such FexOy-NPs, could improve biofilms. Thus, main objective work was include different concentrations FexOy-NPs (0.25 1.0%) manufactured by green synthesis (GS) chemical (CS) into biofilms in...

Beer bagasse is a residue produced in large quantities, though it undervalued the industry. Its high protein and polysaccharide content make attractive for use sectors such as manufacture of bioplastics. However, its water makes necessary to stabilize before being considered raw material. The main objective this work was evaluate stabilization beer production bioplastics from it. In sense, different drying methods (freeze-drying heat treatment at 45 105 °C) were studied. also characterized...

Protein-based bioplastics have been highly investigated in order to substitute conventional plastics. This is due their biodegradability and natural origin, which reduce well-known plastic pollution. Nevertheless, low mechanical properties high environmental sensitivity slowed advance the market. One solution this problem use of additional cross-linking methods, improve bioplastics' properties. In sense, main goal study was evaluate influence different methods (physical, chemical, enzymatic)...

The necessity to mitigate the intrinsic issues associated with tissue or organ transplants, in order address rising prevalence of diseases attributable increased life expectancy, provides a rationale for pursuit innovation field biomaterials. Specifically, biopolymeric aerogels represent significant advancement engineering, offering promising solution formation temporary porous matrices that can replace damaged tissues. However, functional characteristics these materials are inadequate,...

The regeneration of soft tissues that connect, support or surround other is great interest. In this sense, hydrogels have potential as scaffolds for their regeneration. Among the different raw materials, chitosan stands out being highly biocompatible, which, together with its biodegradability and structure, makes it a alternative manufacture hydrogels. Therefore, aim work was to develop characterize To end, most important parameters processing, i.e., agitation time, pH, gelation temperature...

Nowadays, natural polymer-based films are considered potentially environmentally friendly alternatives to conventional plastic films, due many advantageous properties, including their easy processability, high flexibility, non-toxicity, low cost, availability, and environmental safety. However, they limited in application by a number of shortcomings, water solubility vapor permeability as well poor opacity mechanical resistance. Thus, nanoparticles, such green FexOy-NPs, can be used overcome...

The electrospinning process is an emerging and relatively easy technique to prepare three-dimensional matrices with micro- nanofibers. To achieve it, aqueous polymer solutions from synthetic or natural polymers are used. PVA was selected as gelatin because of its biocompatibility biodegradability. A complete characterization the polymeric (density, surface tension, etc) previously performed. Subsequently, a standard (15 kV, 0.4 ml h−1 10 cm) carried out obtain scaffolds. influence...

Abstract BACKGROUND The use of superabsorbent materials in horticulture has spread recently. These materials, which can retain water and release it as crops need it, have strong advantages such the efficient periods drought. However, these are made synthetic polymers, present problems degradability and, sometimes, toxicity. For this reason, main objective work is development biodegradable bioplastic (SAB) matrices using a soy protein isolate (SPI) raw material. Zinc also incorporated into an...