Diverse Manifolds of Biogenic Nanoparticles in Synthesis, Characterization, and Applications

2021 ◽  
pp. 1-28
Author(s):  
Jeyaraj Pandiarajan
Keyword(s):  
Biogenic Nanoparticles

scholarly journals Production of Biogenic Nanoparticles for the Reduction of 4-Nitrophenol and Oxidative Laccase-Like Reactions

2019 ◽  
Vol 10 ◽  
Author(s):  
Michael J. Capeness ◽  
Virginia Echavarri-Bravo ◽  
Louise E. Horsfall
Keyword(s):  
Biogenic Nanoparticles

scholarly journals Antimicrobial Effects of Biogenic Nanoparticles

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1009 ◽  
Author(s):  
Priyanka Singh ◽  
Abhroop Garg ◽  
Santosh Pandit ◽  
V. Mokkapati ◽  
Ivan Mijakovic
Keyword(s):  
Infectious Diseases ◽  
Metallic Nanoparticles ◽  
Active Surface ◽  
Multidrug Resistant ◽  
Antimicrobial Drugs ◽  
Long Term Stability ◽  
New Antibiotics ◽  
Conventional Antibiotics ◽  
Biogenic Nanoparticles

Infectious diseases pose one of the greatest health challenges in the medical world. Though numerous antimicrobial drugs are commercially available, they often lack effectiveness against recently developed multidrug resistant (MDR) microorganisms. This results in high antibiotic dose administration and a need to develop new antibiotics, which in turn requires time, money, and labor investments. Recently, biogenic metallic nanoparticles have proven their effectiveness against MDR microorganisms, individually and in synergy with the current/conventional antibiotics. Importantly, biogenic nanoparticles are easy to produce, facile, biocompatible, and environmentally friendly in nature. In addition, biogenic nanoparticles are surrounded by capping layers, which provide them with biocompatibility and long-term stability. Moreover, these capping layers provide an active surface for interaction with biological components, facilitated by free active surface functional groups. These groups are available for modification, such as conjugation with antimicrobial drugs, genes, and peptides, in order to enhance their efficacy and delivery. This review summarizes the conventional antibiotic treatments and highlights the benefits of using nanoparticles in combating infectious diseases.

scholarly journals Investigation of the Antimicrobial Activity and Hematological Pattern of Nano-Chitosan and its Developed Nano-Copper Composite

2021 ◽  
Author(s):  
Somia Ahmed ◽  
Hadeer Mohamed ◽  
Abeer Al-Subaie ◽  
Ahoud Al-Ohali ◽  
Nesrine Mahmoud
Keyword(s):  
Antimicrobial Activity ◽  
High Sensitivity ◽  
Ionic Gelation ◽  
Clotting Time ◽  
Blood Samples ◽  
Gram Negative ◽  
Inhibition Concentration ◽  
Copper Composite ◽  
Biogenic Nanoparticles

Abstract Novel synthesized Chitosan-Copper oxide nanocomposite (Cs-CuO) was prepared using pomegranate peels extract as green precipitating agents to improve the biological activity of Cs-NP's which was synthesized through ionic gelation method. The characterization of biogenic nanoparticles Cs-NP's and Cs-CuO-NP's were investigated structurally, morphologically to determine the full descriptive features of those nanoparticles. Antimicrobial activity was tested for both Cs-NP's and Cs-CuO-NP's via Minimum inhibition concentration and zone analysis against fungus, gram positive and gram negative. The results of the antimicrobial test showed high sensitivity of Cs-CuO-NP's to all microorganisms that are tested in concentration less than 20 mg/ml while the sensitivity of Cs-NP's against all microorganisms under test started from a concentration of 20 mg/ml to 40 mg/ml except for the C.albicans species. Hematological activity was also tested in via measuring the RBCs, platelets count and clotting time against healthy, diabetic and hypercholesterolic blood samples. Measurement showed a decrease in RBCs and platelets count by adding Cs-NP’s or Cs-CuO-NP's to the three blood samples. Cs-NP’s success to decrease the clotting time for healthy and diabetic blood acting as a procoagulant agent, while adding biogenic CuO-NP’s to Cs-NP’s increased clotting time considering as an anticoagulant agent for hyperchloesterolic blood samples.

scholarly journals Detection of Microorganisms in Low-Temperature Water Environments by in situ Generation of Biogenic Nanoparticles

2020 ◽  
Vol 7 ◽  
Author(s):  
Dmitry A. Skladnev ◽  
Lina V. Vasilyeva ◽  
Yulia Yu. Berestovskaya ◽  
Oleg R. Kotsyurbenko ◽  
Sergei V. Kalenov ◽  
...  
Keyword(s):  
Low Temperature ◽  
Water Samples ◽  
Sampling Site ◽  
Ag Nps ◽  
Biological Objects ◽  
In Situ Generation ◽  
The Comparative Study ◽  
Biogenic Nanoparticles ◽  
Temperature Water

A new nanobiotechnological approach for the detection of extraterrestrial Earth-like biological forms is proposed. The approach is based on the ability of microbial cells to reduce artificially added cations with the generation of crystalline nanoparticles (NPs) from zero-valent atoms. The method is named DBNG (Detection of Biogenic Nanoparticles Generation). The subglacial low-temperature oligotrophic Lake Untersee in Antarctica was used as a model of putative extraterrestrial water environments inhabited by Earth-like type microorganisms. The DBNG protocol for the comparative study of microbial communities of low-temperature oligotrophic environments was optimized on the base of experiments with the pure culture of psychroactive bacterium Cryobacterium sp. 1639 isolated earlier from Lake Untersee. The formation of silver nanoparticles (Ag°NPs) has been conducted in natural water samples of three horizons at low temperature (+5°C), which was in the temperature range registered in the Lake Untersee. The generation of biogenic Ag°NPs was detected only at the presence of indigenous microorganisms in all studied samples. No Ag°NPs generation was observed in the lake water samples artificially free of cells or exposed to pasteurization (two types of controls). The miniature microfluidic chip for an automated version of the device, based on using different analytical methods for recording in situ-formed biogenic nanoparticles, is proposed. The device allows the detection of the biological objects directly at the sampling site.

Antifouling assessments on biogenic nanoparticles: A field study from polluted offshore platform

2015 ◽  
Vol 101 (2) ◽  
pp. 816-825 ◽  
Author(s):  
Muthukumar Krishnan ◽  
Vignesh Sivanandham ◽  
Dahms Hans-Uwe ◽  
Santhosh Gokul Murugaiah ◽  
Palanichamy Seeni ◽  
...  
Keyword(s):  
Field Study ◽  
Offshore Platform ◽  
Biogenic Nanoparticles

Biogenic Nanoparticles from Schwanniomyces occidentalis NCIM 3459: Mechanistic Aspects and Catalytic Applications

2016 ◽  
Vol 179 (4) ◽  
pp. 583-596 ◽  
Author(s):  
Pallavi Mohite ◽  
Mugdha Apte ◽  
Ameeta Ravi Kumar ◽  
Smita Zinjarde
Keyword(s):  
Schwanniomyces Occidentalis ◽  
Catalytic Applications ◽  
Biogenic Nanoparticles

scholarly journals Magnetic entropy as a gating mechanism for magnetogenetic ion channels

2017 ◽  
Author(s):  
Guillaume Duret ◽  
Sruthi Polali ◽  
Erin D. Anderson ◽  
A. Martin Bell ◽  
Constantine N. Tzouanas ◽  
...  
Keyword(s):  
Ion Channels ◽  
Magnetic Fields ◽  
Magnetocaloric Effect ◽  
Rational Approach ◽  
Brain Cells ◽  
Temperature Sensitive ◽  
Magnetic Entropy ◽  
Gating Mechanism ◽  
Freely Moving ◽  
Biogenic Nanoparticles

Magnetically sensitive ion channels would allow researchers to better study how specific brain cells affect behavior in freely moving animals; however, recent reports of “magnetogenetic” ion channels have been questioned because known biophysical mechanisms cannot explain experimental observations. Here we show that magnetic fields can produce a change in the magnetic entropy of biogenic nanoparticles, which in turn may generate sufficient heat to gate temperature-sensitive ion channels. This magnetocaloric effect provides a rational approach for developing future magnetogenetic channels.

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