Synthesis of gallotannin capped iron oxide nanoparticles and their broad spectrum biological applications

Ahmed, Bilal; Syed, Asad; Ali, Khursheed; Elgorban, Abdallah M.; Khan, Afroz; Lee, Jintae; AL-Shwaiman, Hind A.

doi:10.1039/d1ra00220a

Cited by 24 publications

(12 citation statements)

References 76 publications

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“…Reducing and stabilizing agents in plants help shape biocompatible AgNPs. Available secondary compounds including terpenoids, flavonoids, phenols, alkaloids, proteins, and carbohydrates in the extract function as reduction agents [ 48 , 49 , 50 , 51 ].…”

Section: Biosynthesis Of Agnpsmentioning

confidence: 99%

Biological Synthesis of Silver Nanoparticles and Prospects in Plant Disease Management

et al. 2022

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Exploration of nanoparticles (NPs) for various biological and environmental applications has become one of the most important attributes of nanotechnology. Due to remarkable physicochemical properties, silver nanoparticles (AgNPs) are the most explored and used NPs in wide-ranging applications. Also, they have proven to be of high commercial use since they possess great chemical stability, conductivity, catalytic activity, and antimicrobial potential. Though several methods including chemical and physical methods have been devised, biological approaches using organisms such as bacteria, fungi, and plants have emerged as economical, safe, and effective alternatives for the biosynthesis of AgNPs. Recent studies highlight the potential of AgNPs in modern agricultural practices to control the growth and spread of infectious pathogenic microorganisms since the introduction of AgNPs effectively reduces plant diseases caused by a spectrum of bacteria and fungi. In this review, we highlight the biosynthesis of AgNPs and discuss their applications in plant disease management with recent examples. It is proposed that AgNPs are prospective NPs for the successful inhibition of pathogen growth and plant disease management. This review gives a better understanding of new biological approaches for AgNP synthesis and modes of their optimized applications that could contribute to sustainable agriculture.

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Section: Biosynthesis Of Agnpsmentioning

confidence: 99%

Biological Synthesis of Silver Nanoparticles and Prospects in Plant Disease Management

et al. 2022

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“…The dose-dependent effects of TiO 2 NPs on biofilm formation by the three isolates were quantified by measuring crystal violet (CV) absorbance, as described by Ahmed et al [24]. In detail, 100µL ( ∼ =1 × 10 7 cells) of freshly grown SJM-04, SJM-38, or SJM-65 cells were added to wells containing 250, 500, 1000, or 2000 µg/mL of TiO 2 NPs in 200 µL of BHI broth per well.…”

Section: Dose-dependent Effect Of Tio 2 Nps On Biofilm Formationmentioning

confidence: 99%

Titanium Dioxide Nanoparticles Induce Inhibitory Effects against Planktonic Cells and Biofilms of Human Oral Cavity Isolates of Rothia mucilaginosa, Georgenia sp. and Staphylococcus saprophyticus

et al. 2021

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Multi-drug resistant (MDR) bacterial cells embedded in biofilm matrices can lead to the development of chronic cariogenesis. Here, we isolated and identified three Gram-positive MDR oral cocci, (1) SJM-04, (2) SJM-38, and (3) SJM-65, and characterized them morphologically, biochemically, and by 16S rRNA gene-based phylogenetic analysis as Georgenia sp., Staphylococcus saprophyticus, and Rothia mucilaginosa, respectively. These three oral isolates exhibited antibiotic-resistance against nalidixic acid, tetracycline, cefuroxime, methicillin, and ceftazidime. Furthermore, these Gram positive MDR oral cocci showed significant (p < 0.05) variations in their biofilm forming ability under different physicochemical conditions, that is, at temperatures of 28, 30, and 42 °C, pH of 6.4, 7.4, and 8.4, and NaCl concentrations from 200 to 1000 µg/mL. Exposure of oral isolates to TiO2NPs (14.7 nm) significantly (p < 0.05) reduced planktonic cell viability and biofilm formation in a concentration-dependent manner, which was confirmed by observing biofilm architecture by scanning electron microscopy (SEM) and optical microscopy. Overall, these results have important implications for the use of tetragonal anatase phase TiO2NPs (size range 5–25 nm, crystalline size 13.7 nm, and spherical shape) as an oral antibiofilm agent against Gram positive cocci infections. We suggest that TiO2NPs pave the way for further applications in oral mouthwash formulations and antibiofilm dental coatings.

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“…When the solution turned dark blue, the experiment was successful, and the reaction was complete. 18 , 20 …”

Section: Methodsmentioning

confidence: 99%

“…When the solution turned dark blue, the experiment was successful, and the reaction was complete. 18,20 Preparation for Fe 3 O 4 Large size Fe 3 O 4 particles were prepared following procedure: FeCl 3 •6H 2 O (3.35 g) was added into 100 mL (CH 2 OH) 2 and stirred for half an hour; 2.5 g of PEG6000 and 6.75g of NaAc were poured into the mixture. The dissolved solution was poured into a high-pressure reactor and then heated at 210 °C for 12 h. The reaction products were washed with ethanol and ultra-pure water followed by drying in a vacuum at 60 °C for about 6 hours.…”

Section: Preparation For Substratementioning

confidence: 99%

A SERS Platform for Rapid Detection of Drug Resistance of Non-Candida albicans Using Fe3O4@PEI and Triangular Silver Nanoplates

Gu¹,

Hu²,

Wu³

et al. 2022

IJN

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Purpose Candida infection has a high mortality rate, and the increasing prevalence of non- Candida albicans drug resistance in recent years poses a potential threat to human health. Non- Candida albicans has long culture cycles, and its firm cell walls making it difficult to isolate DNA for sequencing. Materials and Methods Fe 3 O 4 @PEI (PEI, polyvinyl imine) was mixed with clinical samples to form Fe 3 O 4 @PEI@non- Candida albicans and enriched them with magnets. Triangular silver nanoplates enhanced the surface-enhanced Raman scattering (SERS) signal. SERS was used to detect the fingerprint spectrum of non-Candida albicans . Then, orthogonal partial least squares discriminant analysis (OPLS-DA) was used to analyze the drug resistance of non- Candida albicans. Results SERS combined with OPLS-DA could well analyze the drug resistance of non- Candida albicans. Through 10-fold-cross validation, the accuracy of training and test data is greater than 99%, indicating that the model has good classification ability. We used SERS for the first time to detect the drug resistance of non- Candida albicans directly. Conclusion This approach can be utilized without causing damage to the cell wall and can be accomplished in as little as 90 minutes. It can provide timely guidance for the treatment of patients with good clinical application potential.

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Synthesis of gallotannin capped iron oxide nanoparticles and their broad spectrum biological applications

Abstract: Broad-spectrum biological effects of gallo-tannin capped Fe2O3 nanoparticles against planktonic bacteria, biofilm, fungi, and cancer cell line.

Cited by 24 publications

References 76 publications

Biological Synthesis of Silver Nanoparticles and Prospects in Plant Disease Management

Biological Synthesis of Silver Nanoparticles and Prospects in Plant Disease Management

Titanium Dioxide Nanoparticles Induce Inhibitory Effects against Planktonic Cells and Biofilms of Human Oral Cavity Isolates of Rothia mucilaginosa, Georgenia sp. and Staphylococcus saprophyticus

A SERS Platform for Rapid Detection of Drug Resistance of Non-Candida albicans Using Fe3O4@PEI and Triangular Silver Nanoplates

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