Sequential injection-chemiluminescence evaluation of stigmasterol glucoside and luteolin via green synthesis of silver nanoparticles using biomass of <i>plectranthus asirensis</i>

Amina, Musarat; Alarfaj, Nawal A.; El‐Tohamy, Maha F.; Musayeib, Nawal M. Al; Oraby, Hesham F.

doi:10.1080/17518253.2018.1543457

Cited by 13 publications

(9 citation statements)

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“…NPs of noble metals possess low cytotoxicity, enable easy modification of their surfaces, have straightforward synthesis processes and excellent biocompatibility [8][9][10]. Such advantages make metallic NPs obtained by green synthesis (gNPs) prospective for applications in biological analysis, drug delivery and imaging, environmental monitoring, industrial catalysis and electronic devices [11][12][13][14][15][16][17][18][19]. A special role of these gNPs is related to antimicrobial and antibiofilm agents [19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

“…Many plants [11,12,21,[24][25][26], algae [4], microorganisms [1,3,[7][8][9][10]14,18,23,[27][28][29][30], as well as redox-imbalanced mammalian cells and systems [31] are known to produce nanostructured mineral crystals and metallic NPs with properties similar to chemically-synthesized materials. Biological agents, including polysaccharides, polypeptides, DNA, enzymes secreted by cells [24,[32][33][34][35][36][37][38][39][40][41] and purified enzymes [42,43] are able to reduce noble metal ions to gain metallic NPs.…”

Section: Introductionmentioning

confidence: 99%

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Metallic Nanoparticles Obtained via “Green” Synthesis as a Platform for Biosensor Construction

et al. 2019

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Novel nanomaterials, including metallic nanoparticles obtained via green synthesis (gNPs), have a great potential for application in biotechnology, industry and medicine. The special role of gNPs is related to antibacterial agents, fluorescent markers and carriers for drug delivery. However, application of gNPs for construction of amperometric biosensors (ABSs) is not well documented. The aim of the current research was to study potential advantages of using gNPs in biosensorics. The extracellular metabolites of the yeast Ogataea polymorpha were used as reducing agents for obtaining gNPs from the corresponding inorganic ions. Several gNPs were synthesized, characterized and tested as enzyme carriers on the surface of graphite electrodes (GEs). The most effective were Pd-based gNPs (gPdNPs), and these were studied further and applied for construction of laccase- and alcohol oxidase (AO)-based ABSs. AO/GE, AO-gPdNPs/GE, laccase/GE and laccase-gPdNPs/GE were obtained, and their analytical characteristics were studied. Both gPdNPs-modified ABSs were found to have broader linear ranges and higher storage stabilities than control electrodes, although they are less sensitive toward corresponding substrates. We thus conclude that gPdNPs may be promising for construction of ABSs for enzymes with very high affinities to their substrates.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metallic Nanoparticles Obtained via “Green” Synthesis as a Platform for Biosensor Construction

et al. 2019

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“…This change in color might be due to surface plasmon resonance on AgNPs by excitation of free electrons present on the metallic NPs as described by Anandalakshmi et al (2016). Amina et al (2018) also reported the change of color of the solution to brownish for the synthesis of AgNPs using P. rugosus extract. Similar findings for color change after exposure to the AgNO 3 by P. granatum extract were reported by Foujdar et al (2021).…”

Section: Discussionmentioning

confidence: 99%

“…Nguyen et al (2021) and Devanesan et al (2018) also reported the different EDS bands for the AgNPs prepared from the plant extracts of the sameThe radical scavenging potential of AgNPs was found greater than that of leaf extract. On increasing the concentration from 25 to 400 μg/mL, the percent RSA of P. granatum leaf extract as well as prepared Ag nanomaterials increased from 12% to 53% and 27% to 71% Amina et al (2018),Bhakya et al (2016),. and Saratale et al…”

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confidence: 99%

Evaluation of biological potential of UV‐spectrophotometric, SEM, FTIR, and EDS observed Punica granatum and Plectranthus rugosus extract‐coated silver nanoparticles: A comparative study

Akhtar,

Irshad,

Ali

et al. 2023

Microscopy Res & Technique

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Recent developments in the green synthesis of metallic nanoparticles (NPs) using phytoconstituents have attracted the attention of the global scientific community. The present study was designed to synthesize silver NPs (AgNPs) using Punica granatum and Plectranthus rugosus plant extracts. The fabricated AgNPs were characterized using UV–visible spectrophotometry (UV–Vis), Fourier‐transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and energy‐dispersive x‐ray spectroscopy (EDS). The shift in the color of the silver nitrate (AgNO3) solution after the addition of P. granatum and P. rugosus extracts indicated the synthesis of AgNPs. The effect of AgNO3 concentrations and pH on the synthesis of AgNPs was also evaluated. The findings of this study suggest that AgNO3 concentration of 1 mM, reaction time of 1 h, and pH of 7 at room temperature were the best suited conditions for the synthesis of AgNPs. According to the FTIR analysis, amidic and carbonyl compounds were primarily responsible for the encapsulation of AgNPs. SEM investigations have shown irregularly shaped geometry with sizes of 35 nm (P. granatum) and 33 nm (P. rugosus) with low agglomeration. The prepared AgNPs exhibited good potential for 2,2‐diphenyl‐1‐picrylhydrazyl radical scavenging, with values of 70% (P. granatum) and 68% (P. rugosus). Hence, we conclude that the leaves of P. granatum and P. rugosus are excellent material for designing of different plant‐extracted‐conjugated AgNPs for biomedical applications.Research Highlights Preparation of the AgNPs using novel plants extracts. P. granatum and P. rugosus extract as reducing, capping, stabilizing, and optimizing agents. Thorough comparative characterization using UV–Vis spectrophotometer, FTIR, SEM, and EDS which is a first of its kind. Comparative antioxidant activity.

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“…Nowadays, enormous focus on the progress of powerful, inexpensive, and sensitive identification techniques for analyzing natural isolated chemical makers, preferably bioactive ones in herbal extracts for their acceptance in global markets [ 1 , 2 ]. Several advanced analytical techniques, including chromatographic (HPLC, UPLC, HPTLC) separations [ 3 ], electrochemical analysis [ 4 ], surface plasmon resonance [ 5 ], quartz crystal microbalance [ 6 ], and optical methods such as chemiluminescence and fluorescence are used for the bioactive markers detection and quantification based on the principle of different corresponding signal appearance [ 7 , 8 ]. The fluorescence detection is notably the most executed optical method for the analysis of bioactive components due to its superiorselectivity and sensitivity [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

The Fluorescence Detection of Phenolic Compounds in Plicosepalus curviflorus Extract Using Biosynthesized ZnO Nanoparticles and Their Biomedical Potential

Amina

Musayeib

Alarfaj

et al. 2022

Plants

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A facile, eco-friendly fluorescence approach based on the biogenic formation of zinc oxide nanoparticles using the biomass of Plicosepalus curviflorus shoots was developed. The suggested approach was employed to analyze three phenolic compounds (catechin, curviflorside, and curviflorin) isolated from the shoots of P. curviflorus. The surface morphology of the prepared ZnONPs was characterized by carrying out different microscopic and spectroscopic investigations. A significant UV-Vis absorption peak of ZnONPs was recognized at 345 nm and the FT-IR spectra of the isolated catechin, curviflorside, and curviflorin in the presence of sodium dodecyl sulfate (SDS) and ZnONPs were recorded at λem 470, 490, and 484 nm after excitation at λex 380, 420, and 410 nm. The suggested fluorescence method displayed linear concentration ranges of 10–120, 5–100, and 10–150 μg mL−1 for the three isolated compounds, respectively. The shoot extract, isolated compounds, and ZnONPs were screened for antibacterial and anticancer effects against four different types of bacterial strains and HeLa cells, respectively. The ZnONPs exhibited the highest zone of inhibition against Escherichia coli and Staphylococcus aureus strains when compared with pure, isolated compounds and shoot extract. The anticancer potential of ZnONPs (64%) was stronger as compared to the 160 µg mL−1 of shoot extract (49%), catechin (52%), curviflorside (54%), and curviflorin (58%) at 160 µg mL−1. Moreover, all the samples were investigated for hemolysis activity and showed a potent anti-hemolytic effect. The developed analytical method showed excellent sensitivity and reliability for the concurrent analysis of the isolated bioactive markers.

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Sequential injection-chemiluminescence evaluation of stigmasterol glucoside and luteolin via green synthesis of silver nanoparticles using biomass of plectranthus asirensis

Cited by 13 publications

References 40 publications

Metallic Nanoparticles Obtained via “Green” Synthesis as a Platform for Biosensor Construction

Metallic Nanoparticles Obtained via “Green” Synthesis as a Platform for Biosensor Construction

Evaluation of biological potential of UV‐spectrophotometric, SEM, FTIR, and EDS observed Punica granatum and Plectranthus rugosus extract‐coated silver nanoparticles: A comparative study

The Fluorescence Detection of Phenolic Compounds in Plicosepalus curviflorus Extract Using Biosynthesized ZnO Nanoparticles and Their Biomedical Potential

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