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Search for "antibacterial" in Full Text gives 96 result(s) in Beilstein Journal of Nanotechnology.
New application of bimetallic Ag/Pt nanoplates in a colorimetric biosensor for specific detection of E. coli in water
Beilstein J. Nanotechnol. 2024, 15, 95–103, doi:10.3762/bjnano.15.9
- nanoparticles (i.e., silver nanoplates, Ag NPLs) covered with a layer of Pt atoms to improve the peroxide activity of NPLs, and use them as colorimetric biosensor materials. Metallic NPLs were employed in a variety of applications, including antibacterial activity [17][18][19], hazardous dye removal [20
Berberine-loaded polylactic acid nanofiber scaffold as a drug delivery system: The relationship between chemical characteristics, drug-release behavior, and antibacterial efficiency
Beilstein J. Nanotechnol. 2024, 15, 71–82, doi:10.3762/bjnano.15.7
- release from the BBR/PLA and BBR NPs/PLA nanofiber scaffolds was investigated in relation to their chemical characteristics, BBR dispersion into nanofibers, and wettability. The BBR release profiles strongly influenced the antibacterial efficiency of the scaffolds over time. When the BBR was loaded, the
- , the BBR NPs/PLA nanofiber scaffold had more wettability and higher concentration of BBR NPs dispersed on the surface of PLA nanofibers. This led to a sustained release of 75 wt % of the loaded BBR during the first 24 h, and consequently boosted the antibacterial effectiveness. Moreover, the
- systems, and tissue engineering, according to the requirement of BBR concentration for the desired therapeutic effects. Keywords: antibacterial activity; berberine; drug-release system; electrospun nanofiber; polylactic acid; Introduction Medicinal plants have various biologically active compounds, such
Fluorescent bioinspired albumin/polydopamine nanoparticles and their interactions with Escherichia coli cells
Beilstein J. Nanotechnol. 2023, 14, 1208–1224, doi:10.3762/bjnano.14.100
- labelled BSA/PDA NPs to track bacteria and carry drugs in the core of bacterial cells. Keywords: accumulation; albumin; antibacterial; Escherichia coli; fluorescence; nanoparticles; penetration; polydopamine; Introduction Organic nanoparticles (ONPs) are used to target and deliver drugs to tissue and
- of antimicrobial resistance of bacteria [5], this appears as a promising route to deliver antimicrobials while reducing the drug doses and subsequent harmful side effects in antibacterial applications. To this end, different types of ONPs have been used, such as liposomes [6] and nanoparticles (NPs
- antibacterial activity is high because of their small size and because any antibacterial natural or synthetic peptide containing KE diads may be used to create such PDA NPs. Fluorescent PDA NPs made with a KE diad-containing protein or peptide have never been reported so far. They may be obtained by labelling
Silver nanoparticles loaded on lactose/alginate: in situ synthesis, catalytic degradation, and pH-dependent antibacterial activity
Beilstein J. Nanotechnol. 2023, 14, 781–792, doi:10.3762/bjnano.14.64
- catalytic performance in degrading the pollutants methyl orange and rhodamine B. The antibacterial activity of the nanocomposite is pH-dependent, related to the alterations in surface properties of the nanocomposite at different pH values. At pH 6, the nanocomposite demonstrated the highest antibacterial
- antibacterial agents. One of the advantages of AgNPs over bulk metal or salts is their ability to controllably release silver as ions or particles, resulting in prolonged protection against bacteria [20]. While the specific mechanism of their antibacterial properties is not fully understood, mechanisms such as
- release of silver ions or electrostatic interaction between AgNPs and microbial cells, have been proposed [21][22]. The AgNPs might release silver ions capable of binding to nucleic acids, thereby, exhibiting antibacterial activity [23][24]. Consequently, any silver-containing composite material with
Nanoarchitectonics to entrap living cells in silica-based systems: encapsulations with yolk–shell and sepiolite nanomaterials
Beilstein J. Nanotechnol. 2023, 14, 522–534, doi:10.3762/bjnano.14.43
- demonstrated great biocompatibility, allowing the cells to survive over long periods of time [38]. However, in the present study using chitosan-based biohybrids, we have observed that the cells did not stay alive for long. The current results point out that chitosan may exhibit antibacterial activity
Plasmonic nanotechnology for photothermal applications – an evaluation
Beilstein J. Nanotechnol. 2023, 14, 380–419, doi:10.3762/bjnano.14.33
- resonances in the UV–vis–IR part of the electromagnetic spectrum are especially researched on for PT applications [13], with excellent reviews on materials for mid-IR applications [14], cancer treatment [15], antibacterial research [16], solar-driven vapour evaporation [16], solar collectors [11][17][18
Quercetin- and caffeic acid-functionalized chitosan-capped colloidal silver nanoparticles: one-pot synthesis, characterization, and anticancer and antibacterial activities
Beilstein J. Nanotechnol. 2023, 14, 362–376, doi:10.3762/bjnano.14.31
- characterization of quercetin- and caffeic acid-functionalized chitosan-capped colloidal silver nanoparticles (Ch/Q- and Ch/CA-Ag NPs), and their antibacterial and anticancer activities. The formation of Ch/Q- and Ch/CA-Ag NPs has been confirmed by ultraviolet–visible (UV–vis) spectroscopy, Fourier-transform
- glioblastoma) and ARPE-19 (human retinal pigment epithelium) cells. Both NPs showed anticancer activity, but Ch/Q-Ag NPs seemed to be more effective on cancer cell lines (U-118 MG) in comparison to healthy ones (ARPE-19). Furthermore, the antibacterial activity of Ch/Q- and Ch/CA-Ag NPs against Gram-negative
- (P. aeruginosa and E. coli) and Gram-positive (S. aureus and S. epidermidis) bacteria was determined, and dose-dependent antibacterial effects were found. Keywords: Ag NPs; anticancer and antibacterial effects; caffeic acid; chitosan; one-pot synthesis; quercetin; U-118 MG and ARPE-19 cells
Structural, optical, and bioimaging characterization of carbon quantum dots solvothermally synthesized from o-phenylenediamine
Beilstein J. Nanotechnol. 2023, 14, 165–174, doi:10.3762/bjnano.14.17
- , 11000 Belgrade, Serbia 10.3762/bjnano.14.17 Abstract Carbon quantum dots as a novel type of carbon nanomaterials have attracted the attention of many researchers because of their unique optical, antibacterial, and anticancer properties as well as their biocompatibility. In this study, for the first
- characterization methods (AFM, TEM, EDS, FTIR, photoluminescence, and EPR) indicate the significant influence of the precursor on structural, chemical, and optical properties. Antibacterial and cytotoxicity tests showed that these dots did not have any antibacterial potential, because of the low extent of reactive
- oxygen species production, and showed low dark cytotoxicity. By investigating the cellular uptake, it was established that these dots penetrated the HeLa cells and could be used as probes for bioimaging. Keywords: antibacterial; bioimaging; carbon quantum dots; precursor; reactive oxygen species
Batch preparation of nanofibers containing nanoparticles by an electrospinning device with multiple air inlets
Beilstein J. Nanotechnol. 2023, 14, 141–150, doi:10.3762/bjnano.14.15
- promising materials, such as conductive fibers [6], phase change fibers [7], antistatic fibers [8], and antibacterial fibers [9]. Therefore, the batch preparation of high-performance functional nanofibers by electrospinning has become a current research hotpot [10]. The properties of spinning solutions used
- easily sink down, resulting in an uneven distribution of nanoparticles in the obtained fibers [17]. Due to their stable physical and chemical properties, good biocompatibility, excellent photoelectric properties, non-toxicity, strong antibacterial activity and low price, ZnO nanoparticles can be used in
Antimicrobial and mechanical properties of functionalized textile by nanoarchitectured photoinduced Ag@polymer coating
Beilstein J. Nanotechnol. 2023, 14, 95–109, doi:10.3762/bjnano.14.11
- , metal-based nanoparticles (MNPs) are of particular interest for such applications as they exhibit impressive antibacterial and antifungal properties. Unlike antibiotics for example, that target cell wall synthesis, translational machinery and DNA replication inside bacteria cells [7], MNPs simply attack
- in Figure 11a for E. coli and remarkably a total inhibition of growth was reached within 24 hours. The silver concentration has no significant impact on antibacterial activity, which indicates that a mere 3 wt % Ag-loaded sample is sufficient to obtain complete elimination of bacteria. The released
In search of cytotoxic selectivity on cancer cells with biogenically synthesized Ag/AgCl nanoparticles
Beilstein J. Nanotechnol. 2022, 13, 1505–1519, doi:10.3762/bjnano.13.124
- synthesized by green methods and, in some cases, are combined with other metals [2]. AgNPs have potential uses in biomedicine. Several authors have reported the ability of AgNPs to act as antibacterial [3][4] or as cytotoxic agents in certain cancer cell lines [5][6]. This type of application has attracted a
- antibacterial abilities of AgNPs synthesized from pineapple peel. They demonstrated the formation of spherical AgNPs with an average size of 14–20 nm by monitoring the pH values of the reaction and the concentration ratio between the precursor and the extract. Baran et al. [16] investigated the antibacterial
Hydroxyapatite–bioglass nanocomposites: Structural, mechanical, and biological aspects
Beilstein J. Nanotechnol. 2022, 13, 1490–1504, doi:10.3762/bjnano.13.123
- one hand, it induces antibacterial activity, and, on the other hand, it promotes the formation and mineralization of bone tissue [19][32]. The HA-BG composites investigated in this work contained two types of HA, obtained either by the sol–gel method (HAG) or by the precipitation method (HAP). It was
Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications
Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109
Roll-to-roll fabrication of superhydrophobic pads covered with nanofur for the efficient clean-up of oil spills
Beilstein J. Nanotechnol. 2022, 13, 1228–1239, doi:10.3762/bjnano.13.102
- packaging and bottles, anti-fouling [36] and antibacterial [37] surfaces, or drag reduction [38] are imaginable. With the low-cost production of large areas of nanofur they seem also financially feasible. Schematic showing the roll-to-roll fabriction of a thin nanofur film by the example of PP and COC. (a
Green synthesis of zinc oxide nanoparticles toward highly efficient photocatalysis and antibacterial application
Beilstein J. Nanotechnol. 2022, 13, 1108–1119, doi:10.3762/bjnano.13.94
- the same conditions; however, it achieved lower efficiencies. In addition, ZnO NPs were also tested regarding their antibacterial activity, and the results showed that the prepared ZnO samples had the highest (i.e., 100%) antibacterial efficiency against E. coli. Keywords: green synthesis; methylene
- ]. These photogenerated electrons and holes migrate to the surface of ZnO to react with H2O and O2 to generate O2•− and •OH radicals, which oxidize organic substances. In addition, ZnO nanoparticles (NPs) have high antibacterial activity against bacteria, high biocompatibility, and are nontoxic to human
- cells [12][13]. Many studies have proven the antibacterial effect of ZnO [14][15] and also that nanoscale ZnO has a more effective antibacterial activity than that of large ZnO [12][16]. Various approaches for synthesizing nanosized materials have been investigated. Among these approaches, chemical and
Recent advances in green carbon dots (2015–2022): synthesis, metal ion sensing, and biological applications
Beilstein J. Nanotechnol. 2022, 13, 1068–1107, doi:10.3762/bjnano.13.93
- as the precursor, including onion, ginger, garlic, and mackerel [113]. The sulfur content of the CDs based on onion and garlic was higher than that of the CDs derived from ginger and fish. Surprisingly, the onion-based CDs had the best antibacterial efficacy against Pseudomonas fragi, as well as good
- , patterning, and sensing, as a result of their advantageous characteristics [125]. Han and co-workers extracted cow milk-derived CDs (CM-CDs) from aqueous solution using ethyl acetate to create amphiphilic CM-CDs (ACMCDs). A unique ACMCD-Ag/polymethylmethacrylate antibacterial film was produced utilizing the
- solvent casting process after the ACMCDs were supported by silver nanoparticles, employing them as both a reducing agent and a template. The nanocomposite antibacterial film is anticipated to have a lot of potential applications such as food packaging, water purification, and disinfecting sanitary
Biomimetic chitosan with biocomposite nanomaterials for bone tissue repair and regeneration
Beilstein J. Nanotechnol. 2022, 13, 1051–1067, doi:10.3762/bjnano.13.92
- phosphatase, bone morphogenic protein, runt-related transcription factor-2, bone sialoprotein, and osteocalcin. In vitro and in vivo studies highlight the scientific findings of antibacterial activity, tissue integration, stiffness, mechanical strength, and degradation behaviour of composite materials for
- tissue engineering applications. Keywords: antibacterial activity; biomimetic materials; bone graft substitutes; chitosan; gold; osteoinductive; silver; Introduction Bone-related defects and diseases are a serious concern to the life of patients [1]. Autografts, allografts, and synthetic grafts are
- ). Besides this, significant antibacterial properties against Staphylococcus epidermidis have been found [99]. Coating materials containing chitosan, bioactive glass, and AgNPs were developed by using the electrophoretic deposition method. The produced material was coated on stainless steel 316 substrates
Spindle-like MIL101(Fe) decorated with Bi2O3 nanoparticles for enhanced degradation of chlortetracycline under visible-light irradiation
Beilstein J. Nanotechnol. 2022, 13, 1038–1050, doi:10.3762/bjnano.13.91
- –organic frameworks; MIL101(Fe); photocatalysts; Z-scheme heterojunction; Introduction Tetracyclines, as the second most widely used antibiotic in the world, have been widely applied in clinics, aquaculture, and livestock due to its broad-spectrum antibacterial properties and low price [1][2
Bioselectivity of silk protein-based materials and their bio-inspired applications
Beilstein J. Nanotechnol. 2022, 13, 902–921, doi:10.3762/bjnano.13.81
- biomaterials and medical devices with antifouling and antibacterial properties, but with reduced susceptibility to enzymatic degradation [85]. General advantages of AMPs/HDPs and mimicking polymer systems over antibiotics as a new generation of antimicrobial agents are their functional diversity, broad
- antimicrobial features [50]. Several studies reported antibacterial properties, reduced biofilm formation, and bacterial repellency of both natural silkworm [127][128][129] and spider silk threads and cocoons [130][131][132][133][134][135][136]. However, the status of the intrinsic properties of silk materials
Solar-light-driven LaFexNi1−xO3 perovskite oxides for photocatalytic Fenton-like reaction to degrade organic pollutants
Beilstein J. Nanotechnol. 2022, 13, 882–895, doi:10.3762/bjnano.13.79
- belong to a sub-category of natural or semi-synthetic polyketides. Tetracycline consists of a linear tetracycline nucleus, exhibiting antibacterial activity, which may affect the biological system after discharging [8]. As the population has become dense, vigorous industrial activities, and the animal
Antibacterial activity of a berberine nanoformulation
Beilstein J. Nanotechnol. 2022, 13, 641–652, doi:10.3762/bjnano.13.56
- the preparation of berberine (BBR) in nanoformulation to enhance its solubility and increase its antibacterial effectiveness against hospital-acquired infections. BBR nanoparticles (BBR NPs) were formed by antisolvent precipitation (ASP) using glycerol as a safe organic solvent. UV–vis absorption
- 156 nm at a concentration of 2.0 mg/mL, measured by dynamic light scattering. After nanoformulation, the concentration of BBR NPs could reach up to 5.0 mg/mL, which is much higher than the saturation concentration without treatment. Results show a strongly enhanced antibacterial activity of BBR NPs
- bacterial cells and severely damaged the cell walls. Therefore, BBR NPs prepared by ASP appear to be a potential candidate for the treatment of bacterial pathogens. Keywords: antibacterial activity; antisolvent precipitation (ASP); berberine nanoparticles (BBR NPs); glycerol; solubility; Introduction
Ciprofloxacin-loaded dissolving polymeric microneedles as a potential therapeutic for the treatment of S. aureus skin infections
Beilstein J. Nanotechnol. 2022, 13, 517–527, doi:10.3762/bjnano.13.43
- Staphylococcus aureus to study the antibacterial activity of ciprofloxacin-loaded polymeric microneedles. To assess the distribution of CIP in dermal layers after microneedle application, the cryostatic microtome technique was utilized. This technique is based on freezing excised skin samples and slicing them
- that we achieved. In another study showing the efficiency of dissolving microneedles in transdermal delivery, the contraceptive hormone levonorgestrel was released and migrated through the entire skin structure, maintaining a quantifiable plasma concentration for up to 60 days [58]. Antibacterial
- treatment of S. aureus skin infections. The PVA/PVP-based dissolving microneedles were studied regarding drug content, mechanical strength, perforation of Parafilm and an agarose-based skin model, dissolution in excised human skin, and antibacterial activity in the agarose-based skin model infected with S
Design and characterization of polymeric microneedles containing extracts of Brazilian green propolis
Beilstein J. Nanotechnol. 2022, 13, 503–516, doi:10.3762/bjnano.13.42
- . and showing several therapeutic properties (i.e., antibacterial, antiviral, antifungal, anti-inflammatory, healing, and immunomodulatory properties). The administration of PRP extracts by conventional routes has some disadvantages, such as running off over the skin in liquid or emulsion form. When
- glycolic extracts. It is a strongly adhesive gum resin, which is collected, processed, and used by honey bees (Apis mellifera L.) [17][22][23]. PRP extracts have been reported to enhance some antibiotic effects, attributing the antibacterial activity of propolis mainly to flavonoids or synergisms among
- some components [24]. The ethanol extract of PRP has several pharmacological activities, such as antiviral, antibacterial, antifungal, anti-inflammatory, anesthetic, cytostatic, hypotensive, and immunostimulatory properties [25]. Glycolic extracts can be an alternative in situations where the use of
Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review
Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40
- their wide bandgap energy (3.3–3.7 eV), strong luminescence [4][5], antibacterial properties, and UV-protection properties. Additionally, ZnO nanomaterials can be designed into various morphologies, such as nanoparticles, nanoneedles, nanorods, nanocages, nanocombs, and nanoflowers [5][6][7][8]. Hybrid
A non-enzymatic electrochemical hydrogen peroxide sensor based on copper oxide nanostructures
Beilstein J. Nanotechnol. 2022, 13, 424–436, doi:10.3762/bjnano.13.35
- (UHT) milk were investigated. H2O2 is present in milk samples either as a result of enzymatic activity or as an antibacterial agent [20][21][22]. For the experiment, we used 3.2% fat milk and Listerine antiseptic mouthwash from a local supermarket. To reduce the sample matrix effect, the samples were
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