IET Nanobiotechnology
Volume 13, Issue 3, May 2019
Volumes & issues:
Volume 13, Issue 3
May 2019
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- Author(s): Femina Carolin Christopher ; Senthil Kumar Ponnusamy ; Janet Joshiba Ganesan ; Racchana Ramamurthy
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 243 –249
- DOI: 10.1049/iet-nbt.2018.5184
- Type: Article
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Establishing biological synthesis of nanoparticles is increasing nowadays in the field of nanotechnology. The search for an optimal source with durability, stability, capacity to withstand higher environmental conditions with excellent characteristics is yet to meet. Consequently, there is need to create an eco-friendly strategy for metal nanoparticle synthesis. One approach investigated in this review is the use of biosurfactants to enhance the synthesis biologically. In comparison with the other technologies, biosurfactants are less toxic and exhibit higher properties. This method is different from the conventional practice like physical and chemical methods. Several research studies represented that the biosurfactant influences the production of nanoparticles about 2–50 nm. In this manner, the research towards the biosurfactant has raised. This review also addressed the feasibility of biosurfactant and their benefits in the synthesis of metallic nanoparticles. The findings from this review can recommend a conceivable use of biosurfactant as a source for metal nanoparticle synthesis.
Investigating the prospects of bacterial biosurfactants for metal nanoparticle synthesis – a comprehensive review
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- Author(s): Mubashir Hussain ; Naveed Iqbal Raja ; Zia-Ur-Rehman Mashwani ; Muhammad Iqbal ; Muhammad Ejaz ; Sumaira Aslam
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 250 –256
- DOI: 10.1049/iet-nbt.2018.5049
- Type: Article
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Green synthesis of silver nanoparticles (AgNPs) by utilising plant extract is an emerging class of nanotechnology. It revolutionizes all the field of biological sciences by synthesizing chemical free AgNPs. In the present study, AgNPs were synthesised by utilising Moringa oleifera leaves as the main reducing and stabilising agent and characterised through UV–visible spectroscopy, zeta analyser, X-ray diffraction spectroscopy (XRD), energy dispersive X-ray (EDX), and scanning electron microscopy (SEM). The different concentrations of biosynthesised AgNPs (10, 20, 30, and 40 ppm) were exogenously applied on the already infected plants (canker) of Citrus reticulata at different day intervals. The AgNPs at a concentration of 30 ppm was found to be most suitable concentration for creating the resistance against canker disease in Citrus reticulata. The enzymatic activities were also explored and it was found that 30 ppm concentration of biosynthesised AgNPs significantly reduced the biotic stress. Fruit quality and productivity parameters were also assessed and it was found that fruit quality and productivity were significant in response to 30 ppm concentration of biosynthesised AgNPs. The present work highlights the potent role of biosynthesised AgNPs, which can be used as biological control of citrus diseases and ultimately improving the quality and productivity of Citrus.
- Author(s): Xiaoshuang Zhao ; Zhenghu Ma ; Honghao Sun
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 257 –261
- DOI: 10.1049/iet-nbt.2018.5108
- Type: Article
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With the rising threat of cancers, gold nanorods (GNRs) based photothermal–chemotherapy is becoming an increasingly important strategy to cure cancers. There are some challenges faced by GNRs system including complicated synthesis process and low drug loading capacity. In this study, GNRs assisted mesoporous silica nanoparticles (GNR@SiO2 NPs) are fabricated by a simple method. The mesoporous SiO2 can not only prevent the aggregation of GNRs but also provide large hollow mesoporous structure to enhance drug loading capacity. Moreover, GNRs absorb near-infrared (NIR) light and convert it into heat. The temperature of the GNR@SiO2 solution was increased to ∼60 (2 W) and 90°C (3 W) after NIR radiation. The photothermal conversion efficiency was 32.60% of GNR@SiO2 under NIR light irradiation at 2 W, while 39.01% under NIR light irradiation at 3 W. The drug loading content of GNR@SiO2 was 22.3 ± 2.5%, which was higher than that of most reported GNR drug delivery systems. The authors also found that the GNR@SiO2@ doxorubicin may have a higher drug release rate under the conditions of the tumour microenvironment. The in vitro cytotoxity of GNR@SiO2 was demonstrated on HeLa cells. The experimental results indicate that GNR@SiO2 has great potential for synergistic treatment to kill cancer cells.
- Author(s): Katayoon Kalantari ; Amalina M. Afifi ; Mona Moniri ; Amin Boroumand Moghaddam ; Alireza Kalantari ; Zahra Izadiyan
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 262 –268
- DOI: 10.1049/iet-nbt.2018.5066
- Type: Article
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In this study, the authors synthesised silver nanoparticles (AgNPs) using autoclave as a simple, unique and eco-friendly approach. The effect of Zingiber officinale extract was evaluated as a reducing and stabiliser agent. According to transmission electron microscopy results, the AgNPs were in the spherical shape with a particle size of ∼17 nm. The biomedical properties of AgNPs as antibacterial agents and free radical scavenging activity were estimated. Synthesised AgNPs showed significant 1,1-diphenyl-2-picryl-hydrazyl free radical scavenging. Strong bactericidal activity was shown by the AgNPs on Gram-positive and Gram-negative bacteria. A maximum inhibition zone of ∼14 mm was obtained for epidermidis at a concentration of 60 μg/ml for sample fabricated at 24 h. The AgNPs also showed a significant cytotoxic effect against MCF-7 breast cancer cell lines with an half maximal inhibitory concentration value of 62 μg/ml in 24 h by the MTT assay. It could be concluded that Z. officinale extract can be used effectively in the production of potential antioxidant and antimicrobial AgNPs for commercial application.
- Author(s): Sara Ghandehari ; Masoud Homayouni Tabrizi ; Pouran Ardalan ; Ali Neamati ; Reyhaneh Shali
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 269 –274
- DOI: 10.1049/iet-nbt.2018.5190
- Type: Article
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Cancer is one of the leading causes of human death. Nanotechnology could offer new and optimised anticancer agents in order to fight cancer. It was shown that metal nanoparticles, in particular silver nanoparticles (AgNPs) were effective in cancer therapy. In this study, AgNPs were synthesised using Rubia tinctorum L. extract (Ru-AgNPs). Then, cytotoxicity effects of the Ru-AgNPs against MDA-MB-231 carcinoma cell line and human dermal fibroblast as normal cell line were performed. Furthermore, anti-apoptotic effects of Ru-AgNPs on these cancer and normal cell lines were compared using acridine orange/propidium iodide staining, flow cytometry analysis and real-time qPCR in apoptosis gene markers. Results of UV-vis spectroscopy showed that Ru-AgNPs have a peak at 430 nm, which indicated synthesis of AgNPs. Ru-AgNPs had spherical shape and average size of 12 nm. Ru-AgNPs have cytotoxicity on MDA-MB-231 cells and decrease cancerous cell viability (IC50 = 4 µg/ml/48 h). Ru-AgNPs could induce apoptosis in MDA-MB-231 cells through upregulation of Bax and downregulation of Bcl-2 gene expression. The results opened up new avenues to develop Rubia based metal complexes as an anticancer agent.
- Author(s): Subburaman Chandramohan ; Krishnan Sundar ; Azhaguchamy Muthukumaran
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 275 –281
- DOI: 10.1049/iet-nbt.2018.5228
- Type: Article
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A facile synthesis of hollow selenium nanoparticles (hSeNPs) was prepared using potato starch as a reducing and capping agent. The morphological and structural characters of the hSeNPs were characterised by ultraviolet-visible spectroscopy (UV), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDX) and zeta potential analyser. The optical characteristics of hSeNPs were confirmed by UV. The presence of various functional groups in the hSeNPs suspension was confirmed by FTIR. The SEM results suggested that the synthesised hSeNPs were uniformly distributed and circular in shape with a hollow. The average size of the hSeNPs was found to be around 115 nm. The EDX analysis also confirmed the presence of hSeNPs in the sample. The zebrafish embryos were treated with hSeNPs of various concentrations ranging from 10 to 50 µg/ml. Abnormalities such as improper heartbeat, embryo sac oedema, ocular oedema and head oedema were noted at higher concentrations (30–50 µg/ml). A concentration-dependent antioxidant activity of hSeNPs was observed. The hSeNPs showed good antibacterial activity against gram-positive Bacillus subtilis and gram-negative Escherichia coli. The results of this study indicate that potato extract reduces the toxicity of hSeNPs and lower concentrations of hSeNPs could be used for various biomedical applications in near future.
- Author(s): Deepika Godugu and Sashidhar Rao Beedu
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 282 –292
- DOI: 10.1049/iet-nbt.2018.5171
- Type: Article
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A facile and green synthesis of platinum nanoparticles [gum kondagogu platinum nanoparticles (GKPtNP)] using biopolymer- gum kondagogu was developed. The formation of GKPtNP was confirmed by ultraviolet (UV)–visible spectroscopy, scanning electron microscopy–energy dispersive X-ray spectroscopy, transmission electron microscopy, X-ray diffraction, Zeta potential, Fourier transform infrared, inductively coupled plasma mass spectroscopy. The formed GKPtNP are well dispersed, homogeneous with a size of 2–4 ± 0.50 nm, having a negative zeta potential (−46.1 mV) indicating good stability. 5-Fluorouracil (5FU) was loaded onto the synthesised GKPtNP, which leads to the development of a new combination of nanomedicine (5FU–GKPtNP). The in vitro drug release studies of 5FU–GKPtNP in pH 7.4 showed a sustained release profile over a period of 120 min. Agrobacterium tumefaciens induced in vitro potato tumour bioassay was employed for screening the anti-tumour potentials of GKPtNP, 5FU, and 5FU–GKPtNP. The experimental results suggested a complete tumour inhibition by 5FU–GKPtNP at a lower concentration than the GKPtNP and 5FU. Furthermore, the mechanism of anti-tumour activity was assessed by their interactions with DNA using agarose gel electrophoresis and UV-spectroscopic analysis. The electrophoresis results revealed that the 5FU–GKPtNP totally diminishes DNA and the UV-spectroscopic analysis showed a hyperchromic effect with red shift indicating intercalation type of binding with DNA. Over all, the present study revealed that the combined exposure of the nanoformulation resulted in the enhanced anti-tumour effect.
- Author(s): Keyvan Aghababaiyan ; Reza Ghaderi Zefreh ; Vahid Shah-Mansouri
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 293 –300
- DOI: 10.1049/iet-nbt.2018.5009
- Type: Article
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Inter-symbol and co-channel interferences restrict the capacity of molecular communication (MC) systems. In this study, the effect of these interferences on the data rate of MC systems is investigated to design an efficient MC system. To this end, the authors propose an analytical model for a diffusion-based MC system comprised of two nanomachines when they exploit On/Off keying modulation. They model the Brownian motion of molecules in a one-dimensional environment as a wiener process and the life expectancy of diffused molecules as an exponential process. First, they consider the inter-symbol interference to derive the data rate of the MC system as a function of the receiver decision threshold and the symbol time duration. Hence, they propose an algorithm to obtain the optimal values of MC system parameters. Then, the effect of co-channel interference is considered by assuming parallel MC systems. They propose a minimum distance between adjacent MC systems that their co-channel interferences effect to be negligible. Moreover, they verify the accuracy of the analytical results by Monte–Carlo simulations. Results show a remarkable improvement in the data rate of MC systems. The derived results may find application in nanonetworks where nanomachines connect together to perform complex tasks.
- Author(s): Shankar Thariga ; Rajakannu Subashini ; Saravanan Pavithra ; Prabakaran Meenachi ; Prasanna Kumar ; Pannerselvam Balashanmugam ; Ponnusamy Senthil Kumar
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 301 –306
- DOI: 10.1049/iet-nbt.2018.5204
- Type: Article
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The present study focuses on fabrication and characterisation of porous composite scaffold containing hydroxyapatite (HAP), chitosan, and gelatin with an average pore size of 250–1010 nm for improving wound repair and regeneration by Electrospinning method. From the results of X-Ray Diffraction (XRD) study, the peaks correspond to crystallographic structure of HAP powder. The presence of functional group bonds of HAP powder, Chitosan and scaffold was studied using Fourier Transform Infrared Spectroscopy (FTIR). The surface morphology of the scaffold was observed using Scanning Electron Microscope (SEM). The Bioactivity of the Nano composite scaffolds was studied using simulated body fluid solution at 37 ± 1°C. The biodegradability test was studied using Tris-Buffer solution for the prepared nanocomposites [nano Chitosan, nano Chitosan gelatin, Nano based Hydroxyapatite Chitosan gelatin]. The cell migration and potential biocompatibility of nHAP-chitosan-gelatin scaffold was assessed via wound scratch assay and were compared to povedeen as control. Cytocompatibility evaluation for Vero Cells using wound scratch assay showed that the fabricated porous nanocomposite scaffold possess higher cell proliferation and growth than that of povedeen. Thus, the study showed that the developed nanocomposite scaffolds are potential candidates for regenerating damaged cell tissue in wound healing process.
- Author(s): Natália M. Santos ; Andressa S. Gomes ; Dalita G.S.M. Cavalcante ; Luis F. Santos ; Silvio R. Teixeira ; Flávio C. Cabrera ; Aldo Eloizo Job
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 307 –315
- DOI: 10.1049/iet-nbt.2018.5225
- Type: Article
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Latex extracted from Hevea brasiliensis tree has been used as a green alternative for preparing gold nanoparticles (Au NPs); however, no study evaluating the cytotoxic and genotoxic potential of Au NPs synthesised using H. brasiliensis has been published. The present study aimed to synthesise and characterise colloidal Au NPs using latex from H. brasiliensis and to evaluate their in vitro cytotoxicity and genotoxicity. Ideal conditions for the green synthesis of Au NPs were studied. In vitro cytotoxicity and genotoxicity of Au NPs in CHO-K1 cells was also evaluated. Our findings indicated that the ideal synthesis conditions of pH, temperature, reduction time, and concentrations of latex and HAuCl4 were 7.0, 85°C, 120 min, 3.3 mg/mL, and 5.0 mmol/L, respectively. LC5024 h of Au NPs was 119.164 ± 5.31 μg/mL. Lowest concentration of Au NPs tested presented minimal cytotoxicity and genotoxicity. However, high concentrations of Au NPs promoted DNA damage and cell death via apoptosis. On the basis of these findings, the authors optimised the use of an aqueous solution of H. brasiliensis latex as a reducing/stabilising agent for the green synthesis of Au NPs. Low concentrations of these NPs are biocompatible in normal cell types, suggesting that these NPs may be used in biological applications.
- Author(s): Chithra Aloysius ; Aveena Abee Varghese ; Shameena Pattekkal Ali ; Thiruvangium Henry Sukirtha ; Nedumkallel Aloysius Sabu ; Jaiby Cyriac ; Thomas Varghese
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 316 –319
- DOI: 10.1049/iet-nbt.2018.5183
- Type: Article
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Carbon nanoparticles (CNPs) are isolated from chimney soot and characterised by various tools such as X-ray diffraction, scanning electron microscopy, transmission electron microscopy and ultraviolet–visible spectroscopy. The X-ray diffraction studies confirm the presence of C60 nanoparticles in the isolated sample. The thermal properties of the prepared CNPs are recorded using thermogravimetric analysis and differential thermal analysis. The analysis of the antibacterial activity of the synthesised CNPs against selected Gram-positive and Gram-negative bacterial strains is also investigated. The systematic study confirms that CNPs collected from chimney soot exhibit good antibacterial potency against Staphylococcus aureus, Streptococcus pyogenes, Klebsiella pneumoniae, and Proteus mirabilis.
- Author(s): Francisco Montero-Silva ; Marcelo J. Kogan ; Iván Montenegro ; Fanny Guzmán ; Soledad Navarrete ; Carolina Parra ; Michael Seeger
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 320 –325
- DOI: 10.1049/iet-nbt.2018.5186
- Type: Article
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This work determined the potency of hexyl-ciprofloxacin molecules that reversibly interact with gold nanoparticles (AuNPs) passivated with 11-mercaptoundecanoic acid (MUA) on Escherichia coli cells. For this, partition of modified antibiotic between different compartments of the gold colloid was determined using analytical techniques. First, concentration of hexyl-ciprofloxacin was determined in the continuous phase of the colloid. Subsequently, the colloid was exposed to a volume of organic immiscible solvent and concentration of the transferred molecules was determined in the organic phase. Comparison of the amount of hexyl-ciprofloxacin in each phase revealed that interaction between molecules and nanoparticles was reversible. Later, this work determined the potency of a population of hexyl-ciprofloxacin molecules contained in a volume of the colloid, and the potency of other population of molecules that only interact with the continuous phase of the colloid. The absolute difference between these two values was proportional to the potency of a number of molecules that interact with the nanoparticles of the colloid.
- Author(s): Siva Bala Subramaniyan ; Sengan Megarajan ; Santhosh Vijayakumar ; Mariappan Mariappan ; Veerappan Anbazhagan
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 326 –331
- DOI: 10.1049/iet-nbt.2018.5221
- Type: Article
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In this study, the endogenous lipid signalling molecules, N-myristoylethanolamine, were explored as a capping agent to synthesise stable silver nanoparticles (AgNPs) and Ag sulphide NPs (Ag2S NPs). Sulphidation of the AgNPs abolishes the surface plasmon resonance (SPR) maximum of AgNPs at 415 nm with concomitant changes in the SPR, indicating the formation of Ag2S NPs. Transmission electron microscopy revealed that the AgNPs and Ag2S NPs are spherical in shape with a size of 5–30 and 8–30 nm, respectively. AgNPs and Ag2S NPs exhibit antimicrobial activity against Gram-positive and Gram-negative bacteria. The minimum inhibitory concentrations (MIC) of 25 and 50 μM for AgNPs and Ag2S NPs, respectively, were determined from resazurin microtitre plate assay. At or above MIC, both AgNPs and Ag2S NPs decrease the cell viability through the mechanism of membrane damage and generation of excess reactive oxygen species.
- Author(s): Yulia Plekhanova ; Sergei Tarasov ; Aleksandr Bykov ; Anatoly Reshetilov
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 332 –338
- DOI: 10.1049/iet-nbt.2018.5172
- Type: Article
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This work considers the effects of various carbon nanomaterials and fibres on bioelectrocatalytic and respiratory activity of bacterial cells during the oxidation of ethanol in the presence of an electron transport mediator. Gluconobacter oxydans sbsp. industrius VKM B-1280 cells were immobilised on the surfaces of graphite electrodes and had an adsorption contact with a nanomaterial (multi-walled carbon nanotubes, thermally expanded graphite, highly oriented pyrolytic graphite, graphene oxide, reduced graphene oxide). The electrochemical parameters of the electrodes (the polarisation curves, the value of generated current at the introduction of substrate, the impedance characteristics) were measured in two-electrode configuration. Modification by multi-walled carbon nanotubes led to the increase of microbial fuel cell (MFC) electric power by 26%. The charge transfer resistance of modified electrodes was 47% lower than unmodified ones. Thermally expanded and pyrolytic graphites had a slight negative effect on the electrochemical properties of modified electrodes. The respiratory activity of bacterial cells did not change in the presence of nanomaterials. The data can be used in the development of microbial biosensors and MFC electrodes based on Gluconobacter cells.
- Author(s): Mosachristas Kithiyon ; Balashanmugam Pannerselvam ; Sandilya Sharma Balasaubramaniyam Madhukumar ; Jagadeeswari Sridharan ; Tamil Selvi Alagumuthu
- Source: IET Nanobiotechnology, Volume 13, Issue 3, p. 339 –344
- DOI: 10.1049/iet-nbt.2018.5237
- Type: Article
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The silver nanoparticles (AgNPs) with their unique chemical and physical properties are proving as a new therapeutical agent. In the present study, the AgNPs synthesised from an aqueous extract of a macrofungus, Earliella scabrosa, were characterised by field emission scanning electron microscopy (FESEM), energy dispersive X-ray analysis (EDX), high-resolution transmission electron microscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and further evaluate for its in vitro antibacterial and wound healing efficacy. The mycosynthesised AgNPs exhibited the surface plasmon resonance peak at 410 nm with good stability over a period of a month. The FESEM and EDX analyses revealed the spherical-shaped AgNPs of an average size of 20 nm and the presence of elemental Ag, respectively. The XRD pattern showed the crystalline nature of AgNPs. The FTIR spectra confirmed the conversion of Ag+ ions to AgNPs due to reduction by biomolecules of macrofungus extract. The mycosynthesised AgNPs showed effective antibacterial activity against two Gram-positive bacteria, namely Bacillus subtilis and Staphylococcus aureus, and two Gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa. The pathogens were highly sensitive to AgNPs, whereas less sensitive to AgNO3. The mycosynthesised AgNPs showed significant wound healing potential with 68.58% of wound closure.
Green synthesis and evaluation of silver nanoparticles for antimicrobial and biochemical profiling in Kinnow (Citrus reticulata L.) to enhance fruit quality and productivity under biotic stress
Simple preparation of photothermal nanomaterial GNR@SiO2 with enhanced drug loading content
Autoclave-assisted synthesis of AgNPs in Z. officinale extract and assessment of their cytotoxicity, antibacterial and antioxidant activities
Green synthesis of silver nanoparticles using Rubia tinctorum extract and evaluation the anti-cancer properties in vitro
Hollow selenium nanoparticles from potato extract and investigation of its biological properties and developmental toxicity in zebrafish embryos
Synthesis, characterisation and anti-tumour activity of biopolymer based platinum nanoparticles and 5-fluorouracil loaded platinum nanoparticles
Enhancing data rate of molecular communication system using Brownian motion
In vitro evaluation of biodegradable nHAP-Chitosan-Gelatin-based scaffold for tissue engineering application
Green synthesis of colloidal gold nanoparticles using latex from Hevea brasiliensis and evaluation of their in vitro cytotoxicity and genotoxicity
Antibacterial activity of carbon nanoparticles isolated from chimney soot
Determination of the potency of hexyl-ciprofloxacin molecules that interact with gold nanoparticles in a reversible manner
Evaluation of the toxicities of silver and silver sulfide nanoparticles against Gram-positive and Gram-negative bacteria
Electrochemical assessment of the interaction of microbial living cells and carbon nanomaterials
Efficacy of mycosynthesised AgNPs from Earliella scabrosa as an in vitro antibacterial and wound healing agent
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