Green synthesis, characterisation and bioactivity of plant‐mediated silver nanoparticles using
            <i>Decalepis hamiltonii</i>
            root extract

Rashmi, Venkatasubbaiah; Sanjay, Konasur Rajesh

doi:10.1049/iet-nbt.2016.0018

Cited by 26 publications

(7 citation statements)

References 29 publications

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“…In particular, colloidal Pt NPs can possess a broad range of properties that make them convenient for many practical applications in fields such as nano-catalysts, electrical conductivity, optics, and for specific biomedical purposes such as implant coatings, imaging agents, diagnostics, drug delivery systems [ 57 , 58 ]. Pt NPs are usually used in the form of colloid or suspension in a fluid [59] . A colloid is technically defined as a stable dispersion of particles in a fluid medium [60] .…”

Section: Discussionmentioning

confidence: 99%

Evaluation of colloidal platinum on cytotoxicity, oxidative stress and barrier permeability across the gut epithelium

Tunçer

Çolakoğlu

Ulusan

et al. 2019

Heliyon

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Colloidal platinum (Pt) is widely consumed due to its health promoting benefits. However, the exact biological effects of these nanoparticles have not been studied in detail, particularly in the gut. In the present study we observed that colloidal Pt was not cytotoxic towards three different epithelial colon cancer cell lines. Co-treatment of the colon cancer cell line Caco-2 with the oxidative stress inducing agent hydrogen peroxide (H2O2) and colloidal Pt resulted in a significant decrease in H2O2 induced oxidative stress. Colloidal Pt by itself did not induce any oxidative stress. Additionally, both overnight pretreatment of Caco-2 cells with colloidal Pt followed by 1 h treatment with H2O2, or co-treatment of cells for 1 h with colloidal Pt and H2O2 resulted in a significant recovery of cell death. Of note, the same protective effects of colloidal Pt were not observed when the oxidative stress was induced in the presence of 2, 2-azobis (2-amidinopropane) dihydrochloride, indicating that the source of free radicals may define the outcome of anti-oxidant activity of colloidal Pt. Colloidal Pt was also able to cross a model intestinal barrier formed in vitro with differentiated Caco-2 cells easily. Overall, our data indicate that colloidal Pt was not toxic towards intestinal epithelial cells, reduced H2O2 induced oxidative stress, protected from oxidative stress related death of intestinal epithelial cells and could pass a model gut barrier easily. Colloidal Pt can therefore be consumed orally for its anti-oxidant and other health promoting benefits.

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Section: Discussionmentioning

confidence: 99%

Evaluation of colloidal platinum on cytotoxicity, oxidative stress and barrier permeability across the gut epithelium

Tunçer

Çolakoğlu

Ulusan

et al. 2019

Heliyon

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“…However, the focus of this review emphasizes the NPs’ antibacterial activities. This short review provides updates on the recent NPs with promising antibacterial activity synthesized by green technology using whole plant or other extracts of plants such as leaves [ 5 , 63 ], fruits [ 64 , 65 ], roots [ 66 , 67 ], barks [ 62 , 68 ], seeds [ 69 , 70 ], rhizomes [ 71 , 72 ], peels [ 73 , 74 ], flowers [ 75 ], and callus [ 76 , 77 ]. Here, we also discuss the challenges of adopting NPs for clinical applications.…”

Section: Nanoparticles and Green Technologymentioning

confidence: 99%

Bactericidal Properties of Plants-Derived Metal and Metal Oxide Nanoparticles (NPs)

et al. 2018

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Nanoparticles (NPs) are nano-sized particles (generally 1–100 nm) that can be synthesized through various methods. The wide range of physicochemical characteristics of NPs permit them to have diverse biological functions. These particles are versatile and can be adopted into various applications, particularly in biomedical field. In the past five years, NPs’ roles in biomedical applications have drawn considerable attentions, and novel NPs with improved functions and reduced toxicity are continuously increasing. Extensive studies have been carried out in evaluating antibacterial potentials of NPs. The promising antibacterial effects exhibited by NPs highlight the potential of developing them into future generation of antimicrobial agents. There are various methods to synthesize NPs, and each of the method has significant implication on the biological action of NPs. Among all synthetic methods, green technology is the least toxic biological route, which is particularly suitable for biomedical applications. This mini-review provides current update on the antibacterial effects of NPs synthesized by green technology using plants. Underlying challenges in developing NPs into future antibacterials in clinics are also discussed at the present review.

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“…Additionally, chemical potential, electric and magnetic properties, among others are also measured after modifying probe tip. The topological information of AgNPs and AuNPs synthesized using plant extract were observed by AFM (Gopinath et al, 2014;Pasca et al, 2014;Rashmi & Sanjay, 2016).…”

Section: Atomic Force Microscopy (Afm)mentioning

confidence: 99%

Nanoparticles in Agriculture: Characterization, Uptake and Role in Mitigating Heat Stress

Yashveer¹,

Redhu²,

Singh³

et al. 2022

NRFHH

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Abiotic stresses like heat, drought, and salinity are among the major threats to sustainable crop production. These stresses induce numerous adverse effects in plants by impairing biochemical, physiological and molecular processes, eventually affecting plant growth, development and productivity. The rising temperature is one of the major causes of heat stress in agriculture. The variation in temperature during crop development has led to devastating agricultural losses in terms of yield. To adapt and mitigate these effects, germplasm scientists and agronomists aim to develop heat-tolerant varieties or cultivars. These efforts generally include the identification of alleles responsible for heat tolerance and their introgression into breeding populations through conventional or biotechnological methods. However, heat tolerance is a very complex physio-biochemical response of plants governed by a number of genes positioned at different loci. The accumulation of various additive gene effects into a single genotype is an extremely tedious and time-consuming process in both plant breeding and biotechnology. Recent advancements in agricultural nanotechnology have raised expectations for sustainable productivity without altering the genetic make-up of plants. In this milieu, the application of biologically active nanoparticles (NPs) could be a novel approach to enhance heat tolerance in crops. Recently, the NPs from silver, silicon, titanium and selenium have been proven valuable for plants to combat heat stress by altering their physiological and biochemical responses. Due to nano-scale size and the high surface area along with their slow and steady release, the NPs exert positive effects in plants through their growth-promoting and antioxidant capabilities. In this review, various technologies used for NPs characterization and their applications in agriculture have been discussed. The review further elaborates the uptake mechanism of NPs and their translocation in different plant parts along with the factors affecting them. This article also describes the role of metal or metal oxide NPs, as well as nano, encapsulated plant growth regulators and signal molecules in heat stress tolerance. The review will provide an insight to the scientists working in the area of agricultural sciences to explore new NPs to encounter different types of biotic and abiotic stresses.

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Green synthesis, characterisation and bioactivity of plant‐mediated silver nanoparticles using Decalepis hamiltonii root extract

Cited by 26 publications

References 29 publications

Evaluation of colloidal platinum on cytotoxicity, oxidative stress and barrier permeability across the gut epithelium

Evaluation of colloidal platinum on cytotoxicity, oxidative stress and barrier permeability across the gut epithelium

Bactericidal Properties of Plants-Derived Metal and Metal Oxide Nanoparticles (NPs)

Nanoparticles in Agriculture: Characterization, Uptake and Role in Mitigating Heat Stress

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