Biogenic Silver Nanoparticles: What We Know and What Do We Need to Know?

Nanobiotechnology is considered to be one of the fastest emerging fields. It is still a relatively new and exciting area of research with considerable potential for development. Among the inorganic nanomaterials, biogenically synthesized silver nanoparticles (bio-AgNPs) have been frequently used due to their unique physicochemical properties that result not only from their shape and size but also from surface coatings of natural origin. These properties determine antibacterial, antifungal, antiprotozoal, anticancer, anti-inflammatory, and many more activities of bio-AgNPs. This review provides the current state of knowledge on the methods and mechanisms of biogenic synthesis of silver nanoparticles as well as their potential applications in different fields such as medicine, food, agriculture, and industries.

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Efficacy of Silver Nanoparticles Synthesized from Hymenocallis species (Spider Lilly) Leaf Extract as Antimicrobial Agents

International Journal of Pharmaceutical Sciences and Nanotechnology ◽

10.37285/ijpsn.2019.12.5.4 ◽

2019 ◽

Vol 12 (5) ◽

pp. 4644-4647

Author(s):

K.K. Gupta ◽

Neha Kumari ◽

Neha Sinha ◽

Akruti Gupta

Keyword(s):

Silver Nanoparticles ◽

Leaf Extract ◽

Antimicrobial Agents ◽

Color Change ◽

Bacterial Species ◽

Antimicrobial Property ◽

Biogenic Synthesis ◽

E Coli ◽

Light Yellow ◽

Antibiotic Property

Biogenic synthesis of silver nanoparticles synthesized from Hymenocallis species (Spider Lilly) leaf extract was subjected for investigation of its antimicrobial property against four bacterial species (E. coli, Salmonella sp., Streptococcus sp. & Staphylococcus sp.). The results revealed that synthesized nanoparticles solution very much justify the color change property from initial light yellow to final reddish brown during the synthesis producing a characteristics absorption peak in the range of 434-466 nm. As antimicrobial agents, their efficacy was evaluated by analysis of variance in between the species and among the different concentration of AgNPs solution, which clearly showed that there was significant variation in the antibiotic property between the four different concentrations of AgNPs solution and also among four different species of bacteria taken under studies. However, silver nanoparticles solution of 1: 9 and 1:4 were proved comparatively more efficient as antimicrobial agents against four species of bacteria.

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Short Review and opinion: New matter properties and applications based on Hybrids Graphene based Metamaterials

Current Graphene Science ◽

10.2174/2452273204999200528141157 ◽

2020 ◽

Vol 04 ◽

Author(s):

A. Guillermo Bracamonte

Keyword(s):

Short Review ◽

New Materials ◽

Design And Synthesis ◽

Chemical Structures ◽

Current State ◽

Potential Applications ◽

Fundamental Research ◽

Miniaturized Instrumentation ◽

And Control ◽

Conductive Properties

: Graphene as Organic material showed special attention due to their electronic and conductive properties. Moreover, its highly conjugated chemical structures and relative easy modification permitted varied design and control of targeted properties and applications. In addition, this Nanomaterial accompanied with pseudo Electromagnetic fields permitted photonics, electronics and Quantum interactions with their surrounding that generated new materials properties. In this context, this short Review, intends to discuss many of these studies related with new materials based on graphene for light and electronic interactions, conductions, and new modes of non-classical light generation. It should be highlighted that these new materials and metamaterials are currently in progress. For this reason it was showed and discussed some representative examples from Fundamental Research with Potential Applications as well as for their incorporations to real Advanced devices and miniaturized instrumentation. In this way, it was proposed this Special issue entitled “Design and synthesis of Hybrids Graphene based Metamaterials”, in order to open and share the knowledge of the Current State of the Art in this Multidisciplinary field.

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Biogenic Silver Nanoparticles as Potential Agent against Mycobacterium Tuberculosis

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2018.1075 ◽

2018 ◽

Vol 6 (1) ◽

pp. 505-511 ◽

Cited By ~ 2

Author(s):

Shweta Patel

Keyword(s):

Silver Nanoparticles ◽

Mycobacterium Tuberculosis ◽

Biogenic Silver Nanoparticles

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Dynamic Manipulation of THz Waves Enabled by Phase-Transition VO2 Thin Film

Nanomaterials ◽

10.3390/nano11010114 ◽

2021 ◽

Vol 11 (1) ◽

pp. 114

Author(s):

Chang Lu ◽

Qingjian Lu ◽

Min Gao ◽

Yuan Lin

Keyword(s):

Optical Methods ◽

Stimuli Responsive ◽

Device Structure ◽

Current State ◽

Insulator Metal Transition ◽

Potential Applications ◽

Fs Laser ◽

External Stimuli ◽

Thz Applications ◽

Thz Waves

The reversible and multi-stimuli responsive insulator-metal transition of VO2, which enables dynamic modulation over the terahertz (THz) regime, has attracted plenty of attention for its potential applications in versatile active THz devices. Moreover, the investigation into the growth mechanism of VO2 films has led to improved film processing, more capable modulation and enhanced device compatibility into diverse THz applications. THz devices with VO2 as the key components exhibit remarkable response to external stimuli, which is not only applicable in THz modulators but also in rewritable optical memories by virtue of the intrinsic hysteresis behaviour of VO2. Depending on the predesigned device structure, the insulator-metal transition (IMT) of VO2 component can be controlled through thermal, electrical or optical methods. Recent research has paid special attention to the ultrafast modulation phenomenon observed in the photoinduced IMT, enabled by an intense femtosecond laser (fs laser) which supports “quasi-simultaneous” IMT within 1 ps. This progress report reviews the current state of the field, focusing on the material nature that gives rise to the modulation-allowed IMT for THz applications. An overview is presented of numerous IMT stimuli approaches with special emphasis on the underlying physical mechanisms. Subsequently, active manipulation of THz waves through pure VO2 film and VO2 hybrid metamaterials is surveyed, highlighting that VO2 can provide active modulation for a wide variety of applications. Finally, the common characteristics and future development directions of VO2-based tuneable THz devices are discussed.

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Biogenic synthesis of silver nanoparticles using Trigonella foenum-graecum seed extract: Characterization, photocatalytic and antibacterial activities

Sensors and Actuators A Physical ◽

10.1016/j.sna.2021.112670 ◽

2021 ◽

Vol 323 ◽

pp. 112670 ◽

Cited By ~ 1

Author(s):

Manal A. Awad ◽

Awatif A. Hendi ◽

Khalid Mustafa Ortashi ◽

Batool Alzahrani ◽

Dina Soliman ◽

...

Keyword(s):

Silver Nanoparticles ◽

Antibacterial Activities ◽

Seed Extract ◽

Biogenic Synthesis ◽

Trigonella Foenum Graecum

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Biogenic silver nanoparticles as an antibacterial agent against bacterial leaf blight causing rice phytopathogen Xanthomonas oryzae pv. oryzae

Bioprocess and Biosystems Engineering ◽

10.1007/s00449-021-02579-7 ◽

2021 ◽

Author(s):

Karunakar Reddy Namburi ◽

Aruna Jyothi Kora ◽

Anuradha Chetukuri ◽

Vijaya Sree Meena Kumari Kota

Keyword(s):

Silver Nanoparticles ◽

Antibacterial Agent ◽

Leaf Blight ◽

Xanthomonas Oryzae ◽

Bacterial Leaf Blight ◽

Biogenic Silver Nanoparticles

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In vivo interactome profiling by enzyme‐catalyzed proximity labeling

Cell & Bioscience ◽

10.1186/s13578-021-00542-3 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Yangfan Xu ◽

Xianqun Fan ◽

Yang Hu

Keyword(s):

State Of The Art ◽

Catalytic Efficiency ◽

Biological Processes ◽

Protein Protein Interaction ◽

Current State ◽

Protein Interactome ◽

Potential Applications ◽

Protein Protein Interaction Networks ◽

Temporal And Spatial

AbstractEnzyme-catalyzed proximity labeling (PL) combined with mass spectrometry (MS) has emerged as a revolutionary approach to reveal the protein-protein interaction networks, dissect complex biological processes, and characterize the subcellular proteome in a more physiological setting than before. The enzymatic tags are being upgraded to improve temporal and spatial resolution and obtain faster catalytic dynamics and higher catalytic efficiency. In vivo application of PL integrated with other state of the art techniques has recently been adapted in live animals and plants, allowing questions to be addressed that were previously inaccessible. It is timely to summarize the current state of PL-dependent interactome studies and their potential applications. We will focus on in vivo uses of newer versions of PL and highlight critical considerations for successful in vivo PL experiments that will provide novel insights into the protein interactome in the context of human diseases.

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Biogenic synthesis, characterization and antimicrobial activity of Ixora brachypoda (DC) leaf extract mediated silver nanoparticles

Journal of King Saud University - Science ◽

10.1016/j.jksus.2020.101296 ◽

2020 ◽

pp. 101296

Author(s):

Meghashyama Bhat ◽

Bidhayak Chakraborty ◽

Raju Suresh Kumar ◽

Abdulrahman I. Almansour ◽

Natarajan Arumugam ◽

...

Keyword(s):

Antimicrobial Activity ◽

Silver Nanoparticles ◽

Leaf Extract ◽

Biogenic Synthesis

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Mesoporous Silica Nanoparticles: Their Projection in Nanomedicine

ISRN Materials Science ◽

10.5402/2012/608548 ◽

2012 ◽

Vol 2012 ◽

pp. 1-20 ◽

Cited By ~ 26

Author(s):

María Vallet-Regí

Keyword(s):

Drug Delivery ◽

Mesoporous Silica ◽

Silica Nanoparticles ◽

Mesoporous Silica Nanoparticles ◽

Surrounding Medium ◽

Stimuli Responsive ◽

Guest Molecules ◽

Different Types ◽

Potential Applications ◽

Inorganic Nanomaterials

Mesoporous silica nanoparticles are receiving growing attention by the scientific biomedical community. Among the different types of inorganic nanomaterials, mesoporous silica nanoparticles have emerged as promising multifunctional platforms for nanomedicine. Since their introduction in the drug delivery landscape in 2001, mesoporous materials for drug delivery are receiving growing scientific interest for their potential applications in the biotechnology and nanomedicine fields. The ceramic matrix efficiently protects entrapped guest molecules against enzymatic degradation or denaturation induced by pH and temperature as no swelling or porosity changes take place as a response to variations in the surrounding medium. It is possible to load huge amounts of cargo into the mesopore voids and capping the pore entrances with different nanogates. The application of a stimulus provokes the nanocap removal and triggers the departure of the cargo. This strategy permits the design of stimuli-responsive drug delivery nanodevices.

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