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Biogenic Synthesis of Silver Nanoparticles Using Phyllanthus emblica Fruit Extract and Its Inhibitory Action Against the Pathogen Acidovorax oryzae Strain RS-2 of Rice Bacterial Brown Stripe
Conclusion
In conclusion, this study clearly provides an economical, environmental friendly, and straightforward reproducible approach in AgNPs synthesis employing P. Emblica fruit extracts as a reducing, stabilizing, and capping agent. The biosynthesized AgNPs were characterized thoroughly by UV-Visible and Energy Dispersive X-Ray Spectroscopy, X-Ray diffraction, FTIR, TEM, HRTEM and SEM. The FTIR results found several phytochemicals responsible for the rapid reduction of ions, leading to AgNPs formation. Especially, hydroxyl groups oxidation of hydrolysate, which likely stimulated the formation of nanoparticles. In the ...
Source: Frontiers in Microbiology - April 25, 2019 Category: Microbiology Source Type: research
Chitosan and silver nanoparticles are attractive auxin carriers: A comparative study on the adventitious rooting of microcuttings in apple rootstocks
This article is protected by copyright. All rights reserved.PMID:34028191 | DOI:10.1002/biot.202100046
Source: Biotechnology Journal - May 24, 2021 Category: Biotechnology Authors: Serdar Korpayev Ay şe Karakeçili Hatice Dumano ğlu Salwa Ibrahim Ahmed Osman Source Type: research
Rapid screening for acetylcholinesterase inhibitors in Selaginella doederleinii Hieron by using functionalized magnetic Fe < sub > 3 < /sub > O < sub > 4 < /sub > nanoparticles
This study reports the application of AChE-immobilized magnetic nanoparticles as a drug screening tool to screen AChE inhibitors for natural products. First, AChE was immobilized on a surface of amino-modified magnetic nanoparticles using covalent binding and the AChE concentration, and the pH as well as time was optimized to obtain the maximum enzyme immobilization yield (61.4 μg/mg), and the kinetic model indicated that AChE-immobilized magnetic nanoparticles and the substrate had the high affinity and specificity. Then, a ligand fishing experiment was carried out using a mixed model of tacrine (an inhibitor of AChE) an...
Source: Talanta - March 7, 2022 Category: Chemistry Authors: Feng Zhang Sihui Li Chao Liu Kun Fang Yongmei Jiang Jianyong Zhang Jie Lan Lei Zhu Hanqing Pang Gang Wang Source Type: research
Matched Ligands for Small, Stable Colloidal Nanoparticles of Copper, Cuprous Oxide and Cuprous Sulfide
Chemistry. 2023 Apr 20:e202300228. doi: 10.1002/chem.202300228. Online ahead of print.ABSTRACTThis work applies organometallic routes to copper(0/I) nanoparticles and describes how to match ligand chemistries with different material compositions. The syntheses involve reacting an organo-copper precursor, copper(I)mesityl [CuMes]z (z = 4, 5), at low temperatures and in organic solvents, with hydrogen, air or hydrogen sulfide to deliver Cu, Cu2O or Cu2S nanoparticles. Use of sub-stoichiometric quantities of protonated ligand (pro-ligand; 0.1-0.2 equivalents vs. [CuMes]z) allows saturation of surface coordination sites but av...
Source: Chemistry - April 20, 2023 Category: Chemistry Authors: Bradley E Cowie Lisa H äfele Andreas Phanopoulos Said A Said Ja Kyung Lee Anna Regoutz Milo S P Shaffer Charlotte Katherine Williams Source Type: research
Abstract 5398: Nanoparticles for image guided focused ultrasound drug delivery
Thermally triggered, PEGylated drug- liposomes are currently in clinical trials. Conventional thermosensitive liposomes (TSLs) lack the labels that would allow tumor imaging upon intravenous injection and a better mark for tissue specific applied hyperthermia (image guidance). We suggest dual- labelled thermosensitive liposomes for focused ultrasound (FUS) induced hyperthermia, triggered-release and functional delivery of the therapeutic anti-cancer drugs to xenograft tumors in response to thermal stimuli in vivo. In addition to labeling for MR Imaging we introduce the use of near infrared (NIR) fluorophores that allow for...
Source: Cancer Research - September 30, 2014 Category: Cancer & Oncology Authors: Thanou, M., Wright, M., Centelles, M. Tags: Cancer Chemistry Source Type: research
Anomalous Dielectric behavior and Correlation of Barrier Hopping Mechanism with Ferroelectricity in Solvent Assisted Phase Pure Bismuth Iron Oxide Nanoparticles
Publication date: Available online 12 July 2019Source: Materials Research BulletinAuthor(s): M Tahir, Saira Riaz, Naveed Ahmad, Usman Khan, Shahid Atiq, M Javaid Iqbal, Shahzad NaseemAbstractPhase pure bismuth iron oxide (BiFeO3) nanoparticles (NPs) are synthesized using sol-gel route; acetic acid (AA) and ethylene glycol (EG) are used as solvents. Nanoparticles synthesized using AA as solvent result in amorphous behavior under as-synthesized condition. Phase pure BiFeO3 is obtained after calcination at 200 °C. Whereas, mixed BiFeO3 and Bi2Fe4O9 phases are observed after calcination at 300 °C. Nanoparticles synthesiz...
Source: Materials Research Bulletin - July 14, 2019 Category: Materials Science Source Type: research
Zinc oxide nanoparticles synthesized from Fraxinus rhynchophylla extract by green route method attenuates the chemical and heat induced neurogenic and inflammatory pain models in mice
Publication date: Available online 5 November 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Zhi Wang, Bin Que, Jianhui Gan, Hao Guo, Qiang Chen, Lina Zheng, Najat Marraiki, Abdullah M. Elgorban, Yi ZhangAbstractFraxinus rhynchophylla belongs to the family of Oleaceae and also called as Chinese ash wood possesses various pharmacological properties such as neuroprotective, antimicrobial, anti-inflammatory, etc. Therefore we synthesized ZnO nanoparticles using Fraxinus rhynchophylla wood extract as reducing and capping agent. The synthesized nanoparticles were characterized with the aid of UV-Spe...
Source: Journal of Photochemistry and Photobiology B: Biology - November 6, 2019 Category: Speech-Language Pathology Source Type: research
Zinc oxide nanoparticles synthesised from the Vernonia amygdalina shows the anti-inflammatory and antinociceptive activities in the mice model.
In conclusion, the findings of this study proved the beneficial effects of zinc oxide nanoparticles from V. amygdalina against the different pain and inflammation-induced mice. Hence, it was clear that the zinc nanoparticles from V. amygdalina could be promising antinociceptive and anti-inflammatory agent in the future.
PMID: 32815404 [PubMed - in process]
Source: Artificial Cells, Nanomedicine and Biotechnology - August 22, 2020 Category: Biotechnology Tags: Artif Cells Nanomed Biotechnol Source Type: research
Chitosan and Gold Nanoparticles Supplementation for Augmentation of Indole-3-Acetic Acid Production by Rhizospheric Pseudomonas aeruginosa and Plant Growth Enhancement
Curr Microbiol. 2022 May 7;79(6):185. doi: 10.1007/s00284-022-02850-4.ABSTRACTThe present study has been focused to evaluate the effect of chitosan nanoparticles (CNPs) and gold nanoparticles (AuNPs) on the phytohormone production by rhizospheric Pseudomonas aeruginosa. The gold nanoparticles were synthesized biologically and characterized by UV-Visible spectrophotometry, transmission electron microscopy, and X-ray diffraction analysis. The indole-3-acetic acid (IAA) production by P. aeruginosa supplemented with CNPs and AuNPs was quantified by using Salkowski's method and confirmed by high-performance liquid chromatograph...
Source: Current Microbiology - May 7, 2022 Category: Microbiology Authors: Jishma Panichikkal Radhakrishnan E Krishnankutty Source Type: research
