the present study aimed to investigate the effect of ethanol (EtOH), acetonitrile (MeCN), and acetone (ACTN) on obtaining irbesartan (IBS) crystal forms with 2,3-dibromosuccinic acid
The present study shows the development of a novel sonochemical synthesis pathway of sub-15 nm silver nanoparticles (AgNPs) with quasi-spherical shape and high stability in aqueous suspension
The objective of the research was to disseminate nanotechnology concepts, applications, and benefits among educators from different Costa Rican provinces to increase their acceptance and dissemination of the subject to elementary students
This study presents a valuable application of pineapple peel BSRs, becoming an attractive raw material for generating products with economic value such as coatings against non-specific adhesion of cells and bacteria on polydimethylsiloxane
We investigated the bacterial communities inhabiting the hair of two- (Choloepus Hoffmanni) and three-toed (Bradypus variegatus) sloths and evaluated their potential for producing antibiotic molecules capable of exerting control over the hair microbiota.
Piperine (PIP) was evaluated as a natural coformer in the preparation of multicomponent organic materials for enhancing solubility and dissolution rate of the poorly water-soluble drugs: curcumin (CUR), lovastatin (LOV), and irbesartan (IBS).
This review article aims to investigate the use of pretreatment methods that can be applied as an alternative to the usage of residual biomass
in this brief review, we intend to explain what a nanosensor is, some of the different kinds of these devices, classifying them according to their chemical, physical, and biological properties, and describe how these features allow the detection of pathogens, undesired compounds, as well as restricted substances.
Innate and adaptive immune responses lead to wound healing by regulating a complex series of events promoting cellular cross-talk. Some smart thermo-responsive polymers like chitosan, polyvinylpyrrolidone, alginate, and poly(ε-caprolactone) can be used to create biocompatible and biodegradable scaffolds. These processed thermo-responsive biomaterials possess 3D architectures similar to human structures.
The present review systematizes findings on the enhancement of curcumin’s beneficial effects when it is loaded and co-loaded into different types of nanosystems covering liposomes, polymeric and solid-lipid nanoparticles, nanostructured lipid carrier, lipid-polymeric hybrids, self- -assembled and protein-based core-shell systems in relation to its antimicrobial, antioxidant, anti-inflammatory and central nervous system protective bioactivities.
Value-added products, such as cellulose nanofibers (CNFs) from lignocellulose in agriculture residues, have been widely applied in the production of membranes that have desirable physicochemical characteristics. In this work, orange bagasse residue was used to obtain cellulose nanofiber and then applied to starch membranes as a mechanical reinforcement.
This review aims to point out the idle opportunities of agricultural production systems and their associated biowastes to contribute to the establishment of a bioeconomy. Hence, the focus lies on five tropical extensive crops: coffee, oil palm, sugar cane, banana, and pineapple.
The halotolerant bacterial strain BU-4, isolated from a hypersaline environment, was identified as an exopolysaccharide (EPS) producer. Pretreatment liquids of steam-exploded quinoa stalks and enzymatic hydrolysates of Curupaú sawdust were evaluated as carbon sources for EPS production with the BU-4 strain, and the produced EPS was characterized using FTIR, TGA, and SEM.
Tissue engineering, also called regenerative medicine, is the application of the principles and methods of engineering and the biological sciences, to understand the relationship between the structure and function of tissues; and thus, to develop biological substitutes that restore, maintain, or improve the function of damaged or lost tissues. The tissue engineering triad is composed by the scaffolds, the cells and growth factors, or functionalization molecules
Significant problems have arisen in recent years, such as global warming and hunger. These complications are related to the depletion and exploitation of natural resources, as well as environmental pollution. In this context, bioprocesses and biorefinery can be used to manage agro-industrial wastes for obtaining high-value-added products.
Nanocellulose (NC) has a wide variety of emerging applications, including enzyme immobilization, drug delivery, and imaging diagnosis. On the other hand, derivatives of hydrazinonicotinic acid (HYNIC) have been used as coordination-agents for their binding to 99mTc in the development of potential radiopharmaceuticals.
Candida maltosa was cultivated in the liquid phase of residual brewing yeast, a major brewery residue, to produce biomass and biofilm. Using response surface methodology, the effect of two variables at two different levels was investigated. The independent variables were agitation speed (at 100 and 200 rpm), and aeration (at 1 and 3 L min−1). Aeration was identified to be important for the production of both biomass and biofilm
The increasing use of silver nanoparticles (AgNP) due to their known antimicrobial activity, has led to their accumulation in soil ecosystems. However, the impact of realistic environmental concentrations of AgNP on the soil microbial community has been poorly studied. In this work, we have evaluated the impact of AgNPs, which mimic real concentrations in nature, on tropical soils grown with Coffea arabica.
Biomolecule derivatives are used transversely in nanotechnology. Deciphering their aggregation behavior is a crucial issue for the rational design of functional materials. To this end, it is necessary to build selectively functionalized analog libraries and infer general rules. In this work we enrich the collection highly oriented to the application of steroid derivatives, by reporting a rare example of selectively modified C-12 bile salt.
This review article focuses on key recent advances in the use of carbon nanotube (CNT) based technologies in nerve tissue engineering, and describes how neurons interact with CNT interfaces to promote neuronal differentiation, growth, and rebuilding the network. CNTs still represent strong candidates for use in therapies for neurodegenerative diseases and spinal cord injuries.
The synthesis of metallic nanoparticles through an ecological and sustainable process is an important objective to be developed in the area of nanotechnology. In the present work, two different commercial brands of yerba mate from Argentina and its wastes (samples PYM and TYM) were used for the preparation of aqueous extracts, in order to synthesize silver nanoparticles at room temperature (25 ° C).
Cutaneous organ regeneration by virtue of tissue engineering
Silicon nanostructures in biomedicine and biotechnology
Statistical Approach to Regulation of Nanotechnology: Need, Advantages and Disadvantages
Physical and chemical characterization of PLA nanofibres and PLA/ZrO2 mesoporous composites synthesized by air-jet spinning
3D polymeric scaffolds for oral tissue regeneration
Pretreatment methods of lignocellulosic wastes into value-added products: recent advances and possibilities
Microhabitat heterogeneity associated with Vanilla spp. And its influences on the microbial community of leaf litter and soil. Soil Ecol. Lett
Fungal biosynthesis of lignin-modifying enzymes from pulp wash and Luffa cylindrical for azo dye RB5 biodecolorization using modeling by response surface methodology and artificial neural network,
Electrospun nanofibers: A nanotechnological approach for drug delivery and dissolution optimization in poorly water-soluble drugs,
Micro- and nanofibrillated cellulose (MNFC) from pineapple (Ananas comosus) stems and their application on polyvinyl acetate (PVAc) and urea-formaldehyde (UF) wood adhesives,
Organic amendments exacerbate the effects of silver nanoparticles on microbial biomass and community composition of a semiarid soil
Increased Fibroblast Metabolic Activity of Collagen Scaffolds via the Addition of Propolis Nanoparticles,
Microplastic ingestion by a herring Opisthonema sp. in the Pacific coast of Costa Rica
The experimental conditions necessary to stabilize irbesartan tautomers (SII) in solution and selectively obtain the demmotropic crystal forms are presented here. The 1H and 2H tautomers were stabilized under specific solution conditions and the 2H-tetrazole-imidazole interaction was confirmed by NMR in solution state. Results showed that highly polarizable and polarizable solvents lead to crystallization of IBS form B.
Lovastatin (LOV) is a medicine used to treat hypercholesterolemia. Recent studies have identified its antioxidant effects and its possible use in the treatment of some types of cancer. However, the low bioavailability related to its poor water solubility limits its use in solid oral dosage forms. Therefore, to improve the solubility of LOV, three eutectic systems of LOV were obtained with the carboxylic acids (BEN), (SAL) and (SIN)
Aqueous systems composed of low molecular weight species (LMWS) and water soluble polymers (WSP) have important technological applications. Therefore, continuous advances in characterization techniques are crucial to better understand how these systems interact and subsequently further modulate their properties by fine-tuning their preparation process.
The objective of this contribution is to demonstrate through a complete solid state characterization, thermodynamic study and dissolution properties that the IBS forms are demotropes that are not monotropically related. However, the intention is also to draw attention to the importance of carrying out strict chemical and solid-state quality controls on IBS raw materials.
Cancer is the disease that has the longest human lives worldwide, currently the treatments available for this disease are very aggressive, among which chemotherapy stands out. As an alternative to these treatments, studies have been carried out for the synthesis of nanocarriers that have an advantage over conventional treatments, an increase in the solubility of the drug, allowing a more specific supply of the drug and a lower renal clearance.
Antifungal activity of cotton fabrics finished modified silica-silver- carbon-based hybrid nanoparticles
Biorefinery of Rice Husk to Obtain Functionalized Bioactive Compounds
Biocompatibility of Developing 3D-Printed Tubular Scaffold Coated with Nanofibers for Bone Applications
European Pallets Fabricated with Composite Wood Blocks from Tropical Species Reinforced with Nanocrystalline Cellulose: Effects on the Properties of Blocks and Static Flexure of the Pallet,
Polyurethanes as a product of the Biorefinery of Rice Industrialization
Application of multilayer carbon nanotubes (MWCNT) on nine tropical wood of Costa Rica and their impact on mechanical resistance
Nanobiodiversity and Biomimetic Adhesives Development: From Nature to Production and Application
Nanobiotechnology in Agricultural Sector: Overview and Novel Applications
Nutraceuticals: definition, applied nanoengineering in their production and applications
Polylactic Acid (PLA) as a Bioplastic and its Possible Applications in the Food Industry
Recovery of by-products from the industrialization of soybean oils and the fishing industry to obtain polymeric membranes
Synthesis and characterization of silver nanoparticles and their application as an antibacterial agent
Crystal Engineering to Design of Solids: From Single to Multicomponent Organic Materials
Cardanol: an ecological alternative for potential applications in the polymer industry
Evaluation of the Interaction of Chlorhexidine Mouthwash with Different Beverages,
Evaluation of Surgical Bur Deformation and Bone Surface Roughness After Multiple Uses
Structural characterization of chitosan-modified vesicles
Evaluation of the synergistic effect of EDTA-functionalized chitosan nanoparticles on imipenem delivery in Pseudomonas aeruginosa carbapenem-resistant strain AG1”.
Basis and Applications of Silicon Reinforced Adhesives. Organic & Medicinal Chem I
Chitosan-silver nanoparticles as an approach to control bacterial proliferation, spores and antibiotic-resistant bacteria,
Study of Microorganisms Associated with the Chemical Compounds in a Tropical Soil
Electrostatic immobilization of antimicrobial peptides on polyethylenimine and their antibacterial effect against Staphylococcus epidermidis.
Evaluation of Microleakage by Gas Permeability and Marginal Adaptation of MTA and Biodentine™ Apical Plugs: In Vitro Study,
Synthesis of Silver Nanoparticles Using Extracts from Yerba Mate (Ilex paraguariensis) Wastes,
Bio Refinery of Oily Wastes
Biogenic silica-based microparticles obtained as a sub-product of the nanocellulose extraction process from pineapple peels.
Physico–Chemical Characterization of Dentinal Surface Treated with Atmospheric Pressure Plasma
Effects of adding TiO2 nanoparticles to a water-based varnish for wood applied to nine tropical woods of Costa Rica exposed to natural and accelerated weathering
Isomerization of Fatty Acids A Cellular Barrier Mechanism in Nanotechnology
Gold, silver, copper and silicone hybrid nanostructure cytotoxicity
Silver Nanoparticles: Technological Advances, Societal Impacts, and Metrological Challenges
Proposal for the incorporation of nanotechnology in formal secondary education in Costa Rica
Production of Starch Films Using Propolis Nanoparticles as Novel Bioplasticizer
Synthesis and characterization of interpenetrating polymer networks (IPNs) from acrylated soybean oil and alpha-resorcylic acid: Part 1. Kinetic of network formation
Synthesis and characterization of interpenetrating polymer networks (IPNs) from acrylated soybean oil and alpha-resorcylic acid: Part 2. Thermo-mechanical properties and linear fracture mechanics
Nanobiodiversity: The potential of extracellular nanostructures.
Encapsulation of Bacterial Metabolic Infiltrates Isolated from Different Bacillus Strains in Chitosan Nanoparticles as Potential Green Chemistry-Based Biocontrol Agents against Radopholus similis
Variation of physical properties of rigid polyurethane foams synthesized from renewable sources with different commercial catalysts
Synthesis and characterization of nanocrystalline cellulose derived from pineapple residues
Production of polyhydroxybutyrate (PHB) by Bacillus megaterium DSM32 from residual glycerol of the Bioenergy Industry
Synthesis and Reinforcement of Thermostable Polymers Using Renewable Resources
NanoUV-VIS: An Interactive Visualization Tool for Monitoring the Evolution of Optical Properties of Nanoparticles Throughout Synthesis Reactions
Cholic acid covalently bound to multi-walled carbon nanotubes: Improvements on dispersion stability
Characterization and cellular response of 3D-scaffold functionalized with PLA nanofibers.
Castor oil (Ricinus communis) supercritical methanolysis,
Biosynthesis of silver nanoparticles using mint leaf extract (Mentha piperita) and its antibacterial activity
Nanobots: Development and Future
Interfactant action of an amphiphilic polymer upon directing graphene oxide layer formation on sapphire substrates
Development and characterization of biomaterials for biomimetic tissue applications
Effect of Silver Nanoparticles Synthesized with NPsAg-Ethylene Glycol (C2H6O2) on Brown Decay and White Decay Fungi of Nine Tropical Woods
Extracellular micro and nanoestructures forming the velvet worn solidified adhesive secretation
Microgravity and Nanomaterials
Recycling and Elimination of Wastes obtained from Agriculture by using Nanotechnology: Nanosensors.
Biopulp from pineapple leaf fiber produced by colonization with two white-rot fungi: Trametes versicolor and Pleurotus ostreatus.
Implementation of diverse non-centrosymmetric layer concepts for tuning the interface activity of a magnesium alloy.
Controlled Deposition of Gold and Silver on a Porous Silicone Matrixs.