Enhanced antibacterial properties and magnetic removal of FeO/fenugreek seed gum/silver nanocomposites for water treatment.

This study reports the synthesis, characterization, and antibacterial activity of a novel FeO nanocomposite coated with fenugreek seed gums and silver nanoparticles (AgNPs). To enhance the antibacterial properties of AgNPs and overcome the limitations of conventional methods for the production of three-component nanocomposites, a layer of natural polymer was used. Fenugreek seed gums (FSG) were used to coat FeO NPs to prevent their decomposition and to facilitate the release of silver nanoparticles in aqueous media.

Phytochemicals, Essential Oils Composition and Antioxidant Activity of Astragalus spp., Phlomis olivieri and Daphne mucronata in Habitats of Central Iran.

This study evaluated several secondary metabolites, essential oils (EOs) compositions, and antioxidant activity in four medicinal plants that originated in Isfahan rangelands. The species were Astragalus verus, Astragalus adscendens, Daphne mucronata, and Phlomis olivieri. Thirty-two genotypes of these species were evaluated for different biochemical traits.

Exploring the antibacterial potential of magnetite/Quince seed mucilage/Ag nanocomposite: Synthesis, characterization, and activity assessment.

In this study, we present a novel core-shell antibacterial agent designed for water disinfection purposes. The nanocomposite is synthesized by combining quince seed mucilage (QSM) as the shell material and FeO as the core material. The integration of antibacterial silver nanoparticles (Ag NPs) onto the QSM shell effectively prevents agglomeration of the Ag NPs, resulting in a larger contact surface area with bacteria and consequently exhibiting enhanced antibacterial activity.

Improving water treatment using a novel antibacterial kappa-carrageenan-coated magnetite decorated with silver nanoparticles.

In this study, we aimed to fabricate an enhanced antibacterial agent to act against pathogenic bacteria in aqueous environments. To achieve this, silver nanoparticles (AgNPs) were inlaid on a kappa-carrageenan (KC) base and coated on FeO magnetic cores (FeO@KC@Ag). Superparamagnetic FeO nanoparticles were designed at the center of the composite nanostructure, allowing magnetic recovery from aqueous media in the presence of a magnet.

Efficient removal of methylene blue from water using magnetic Alyssum homolocarpum seed gum-based matrix.

In this study, we fabricated magnetic FeO nanoparticles conjugated with anionic hydroxypropyl starch-graft-acrylic acid (Fe3O4@AHSG) for the efficient removal of methylene blue (MB) dye from aqueous solutions. The synthesized nanoconjugates were characterized using various techniques. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) analysis revealed that the particles exhibited homogeneously distributed nanosized spherical shapes with a mean diameter of 41.

Design and fabrication of magnetic FeO-QSM nanoparticles loaded with ciprofloxacin as a potential antibacterial agent.

In this investigation, we have synthesized magnetite nanoparticles (FeO NPs) coated with quince seed mucilage (QSM) as a natural, biocompatible, and biodegradable component and loaded them with ciprofloxacin (CIP) to act as an antibacterial agent. The structural, magnetic, physicochemical, colloidal, and antibacterial properties of the samples were tested using various characterization tools such as XRD, TEM, FE-SEM, VSM, FT-IR, UV-Vis, DLS, BET, and disk diffusion for testing the antibacterial properties. XRD and VSM results confirmed the fabrication of a highly pure cubic spinel phase for FeO.

Design and characterization of Persian gum/polyvinyl alcohol electrospun nanofibrous scaffolds for cell culture applications.

Biocompatible electrospun nanofiber scaffolds were fabricated in this study using Persian gum (PG) and poly (vinyl alcohol) (PVA) to build an artificial extracellular matrix for cell growth. The preparation procedure involves mixing various ratios of PG/PVA to be electrospun and seeded with L929 fibroblasts. Upon addition of PG up to 60% to the solutions, a 30% decrease to around 240 μs·cm is found in electrical conductivity which is in the range of semi-conductive polymers, whereas the surface tension is increased to around 3%.

Design of polysaccharidicgel incorporated PVA/tetracycline electrospun cell culture scaffolds for biomedical applications.

In this study, hybrid nanofibrous 3D scaffolds containing(AV), polyvinyl alcohol (PVA) and tetracycline hydrochloride (TCH) are fabricated by electrospinning for cell culture applications. The role of polysaccharides present in AV gel is found to enhance the biocompatibility of the nanofibrous scaffolds. Different combinations of the polymers were selected to produce homogenous nanofibers with favorable mean fiber diameter and tensile strength.

Biocompatibility of electrospun cell culture scaffolds made from balangu seed mucilage/PVA composites.

Synthesis of Balangu () seed mucilage (BSM) solutions combined with polyvinyl alcohol (PVA) was studied for the purpose of producing 3D electrospun cell culture scaffolds. Production of pure BSM nanofibers proved to be difficult, yet integration of PVA contributed to a facile and successful formation of BSM/PVA nanofibers. Different BSM/PVA ratios were fabricated to achieve the desired nanofibrous structure for cell proliferation.

Quince seed mucilage coated iron oxide nanoparticles for plasmid DNA delivery.

This study investigates the potential of iron oxide nanoparticles (FeO) and quince seed mucilage as combined genetic carriers to deliver plasmid DNA (pDNA) through the gastrointestinal system. The samples are characterized by x-ray diffraction (XRD), zeta potential, dynamic light scattering, FT-IR spectroscopy, field emission scanning electron microscopy and vibrating sample magnetometry. The stability of pDNA loading on the nanocarriers and their release pattern are evaluated in simulated gastrointestinal environments by electrophoresis.

Facile preparation of chitosan-dopamine-inulin aldehyde hydrogel for drug delivery application.

Chitosan-based hydrogels are a suitable and versatile system for the design of localized and controlled drug delivery systems. In the current study, a hydrogel based on chitosan (CS), Dopamine (DA), and Inulin aldehyde (IA) was fabricated without the further use of catalyst or initiators. The effect of the IA contents as a crosslinking agent on the properties of the prepared hydrogel was studied.

Electrospinning of PVA-carboxymethyl cellulose nanofibers for flufenamic acid drug delivery.

A prominent medical application of nanotechnology is represented in drug delivery. In this work, carboxymethyl cellulose (CMC) and poly(vinyl alcohol) (PVA) were used for producing CMC/PVA aqueous-based nanofibers loaded with flufenamic acid (FFA) as a drug containing amine groups. The CMC/PVA solutions with 90/10, 80/20, 70/30, 60/40 and 50/50 ratios were considered for electrospinning.

A non-enzymatic sensor based on three-dimensional graphene foam decorated with Cu-xCuO nanoparticles for electrochemical detection of glucose and its application in human serum.

In the present study, a porous structure consisting of three-dimensional graphene (3DG) decorated with Cu-based nanoparticles (NPs) (Cu or Cu-CuO) was synthesized in order to develop an enzyme-free electrochemical glucose sensor. Moreover, the effects of Cu-based nanoparticle concentrations on electrochemical properties and glucose detection were evaluated by cyclic voltammetry, electrochemical impedance spectroscopy, and differential pulse voltammetry. Cu-based NPs@3DG showed markedly better electrochemical performance in glucose oxidation in alkaline solution compared to 3DG foam.

Preparation of cell culture scaffolds using polycaprolactone/quince seed mucilage.

In the present study, the polymer obtained from Cydonia oblonga Miller seeds (quince seed mucilage (QSM)) in combination with polycaprolactone (PCL) was used for producing hybrid electrospun scaffolds as three-dimensional (3D) cell culture platforms. Various PCL/QSM ratios were tested to obtain a uniform product with an appropriate mean fiber diameter for cell growth. The chemical structures of the scaffolds were studied by FT-IR spectroscopy and their crystallinity was investigated by XRD.

Antibacterial magnetic nanoparticles for therapeutics: a review.

Along with the extensive range of exotic nanoparticle (NPs) applications, investigation of magnetic NPs (MNPs) has ushered modern antibacterial studies into an increasingly attractive research area. A great number of microorganisms exist in the size scales from nanometre to micrometre regions. The enormous potential of engineered MNPs in therapeutic procedures against various drug-resistant bacteria has declined the menace of fatal bacterial infections.

Synthesis and characterization of magnetite/Alyssum homolocarpum seed gum/Ag nanocomposite and determination of its antibacterial activity.

Due to applications of silver nanoparticles (Ag NPs) especially in advanced science fields, it is important to produce Ag antibacterial nanocomposites with enhanced antibacterial activity and reusability. Over the past decade researches about natural polymers have emphasized the use of them as nanoparticles coating. In this work, a novel core-shell antibacterial agent was synthesized through a three-step procedure.

Optical biosensing of Streptococcus agalactiae based on core/shell magnetic nanoparticle-quantum dot.

An immunomagnetic optical probe based on a core/shell magnetic nanoparticle-quantum dot was fabricated for detection of Streptococcus agalactiae, the causative agent of pneumonia and meningitis in newborns. The silica-coated magnetic nanoparticles conjugated with anti-S. agalactiae monoclonal antibody provided high specificity for pre-enrichment of bacteria from biological samples with a complex matrix such as milk.

Fabrication of β-carotene loaded glucuronoxylan-based nanostructures through electrohydrodynamic processing.

Various concentrations of β-carotene (2.5-20% w/w dry mucilage weight) were loaded within Cydonia oblonga mucilage (COM) which further processed through electrohydrodynamic processing (EHP) to attain BC-Loaded nanostructures of high thermochemical stability. The BC loaded COM systems were characterized in terms of droplet size, rheological properties, surface tension, and electrical conductivity and their subsequent impacts on the morphology and physicochemical attributes of the produced nanostructures were studied.

Application of cress seed musilage magnetic nanocomposites for removal of methylene blue dye from water.

A magnetic nanocomposite adsorbent based on cress seed mucilage (CSM) was synthesized for removing methylene blue (MB) cationic dye from aqueous solutions. These adsorbent nanoparticles were prepared by in situ formation of magnetic iron oxide nanoparticles (MIONs) coupled with CSM mucilage and benefited from the advantages of both CSM and MIONs. The CSM-MIONs adsorbent exhibited a great dye adsorption capacity along with a strong magnetic character.

Fabrication of cellulose nanoparticles through electrospraying.

This study reports the fabrication of cellulose nanoparticles through electrospraying the solution of cellulose in -dimethylacetamide/lithium chloride solvent as well as investigating the effect of electrospraying conditions and molecular weight on the average size of electrosprayed nanoparticles. Electrospraying of cellulose was carried out with the following range for each factor, namely concentration = 1-3 wt%, voltage = 15-23 kV, nozzle-collector distance = 10-25 cm, and feed rate = 0.03-0.

A ternary nanofibrous scaffold potential for central nerve system tissue engineering.

In the present research, a ternary polycaprolactone (PCL)/gelatin/fibrinogen nanofibrous scaffold for tissue engineering application was developed. Through this combination, PCL improved the scaffold mechanical properties; meanwhile, gelatin and fibrinogen provided more hydrophilicity and cell proliferation. Three types of nanofibrous scaffolds containing different fibrinogen contents were prepared and characterized.

Synthesis and characterization of basil seed mucilage coated FeO magnetic nanoparticles as a drug carrier for the controlled delivery of cephalexin.

A novel drug delivery system, loaded the drug cephalexin on the basil seed mucilage coated magnetic nanoparticles (FeO@BSM-CPX) was prepared and characterized by means of X-ray diffraction (XRD), Furier Transform Infrared (FTIR), Field Emission Scanning Electron Microscope (FESEM), Vibrating Sample Magnetometer (VSM), Transmission Electron Microscopy (TEM), and Anti-bacterial, and Specific Surface (BET). By comparing the size of the uncoated nanoparticles (12nm) and the size of the coated magnetite nanoparticles (6nm), it was found that with the mucilage coating being put on the magnetite nanoparticles, the size of the nanoparticle cores has also decreased. The optimum pH results showed that the higher adsorption capacity occurs when cephalexin is cationic at pH2.

Development and characterization of electrosprayed Alyssum homolocarpum seed gum nanoparticles for encapsulation of d-limonene.

In this study, the feasibility of developing Alyssum homolocarpum seed gum (AHSG) nanocapsules containing d-limonene by electrospraying has been investigated. d-limonene emulsions with constant AHSG (0.5% w/w) and various flavor concentrations (10-30% based on gum weight) with 0.

Removal of nickel and cadmium heavy metals using nanofiber membranes functionalized with (3-mercaptopropyl)trimethoxysilane (TMPTMS).

Functionalized nanofibrous membranes have been produced via electrospinning with a polymer solution of 19% (w/w) of nylon 66 prepared in a formic acid/chloroform mixture (75:25 v/v). The optimum parameters of electrospinning, like voltage, flow rate, tip and collector distances, were achieved and produced nanofiber membranes with a thickness of 287 nm. Then the nanofiber membranes were functionalized by (3-mercaptopropyl)trimethoxysilane (TMPTMS) at various amounts.

Super magnetic nanoparticles NiFe2O4, coated with aluminum-nickel oxide sol-gel lattices to safe, sensitive and selective purification of his-tagged proteins.

Super magnetic nanoparticle NiFe2O4 with high magnetization, physical and chemical stability was introduced as a core particle which exhibits high thermal stability (>97%) during the harsh coating process. Instead of multi-stage process for coating, the magnetic nanoparticles was mineralized via one step coating by a cheap, safe, stable and recyclable alumina sol-gel lattice (from bohemite source) saturated by nickel ions. The TEM, SEM, VSM and XRD imaging and BET analysis confirmed the structural potential of NiFe2O4@NiAl2O4 core-shell magnetic nanoparticles for selective and sensitive purification of His-tagged protein, in one step.