In vitro and in silico antimicrobial activity of sterol and flavonoid isolated from Trianthema decandra L.

Geethalakshmi, R.; Sarada, V.

doi:10.1016/j.micpath.2018.05.018

Cited by 23 publications

(15 citation statements)

References 20 publications

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“…Our findings are in agreement with previous research conducted on AgNPs green-synthesized using the leaf extract of S. acuta [17]. Similar phenomena were reported earlier where AgNPs biofabricated using Trianthema decandra, showed interplanar distance corresponds to mixed phase of cubic and hexagonal structures [37].…”

Section: Characterization Of Silver Nanoparticlessupporting

confidence: 93%

Single-Step Biofabrication of Silver Nanocrystals Using Naregamia alata: A Cost Effective and Eco-Friendly Control Tool in the Fight Against Malaria, Zika Virus and St. Louis Encephalitis Mosquito Vectors

Azarudeen¹,

Govindarajan

Amsath³

et al. 2016

J Clust Sci

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Botanical-based nanosynthesis has been recently reported as a cheap alternative for mosquito management. Screening different botanicals as reducing and capping agents led to the production of metal nanoparticles with different biophysical and mosquitocidal features. Here, Naregamia alata-mediated biosynthesis of silver nanoparticles (AgNPs) was conducted. AgNPs were tested on egg, larval and adult populations of three important mosquito vectors, Anopheles stephensi, Aedes aegypti and Culex quinquefasciatus. AgNPs were characterized using UV-Vis spectrophotometry, FTIR, AFM, SEM, TEM, EDX, and XRD analyses. Maximum larvicidal toxicity was detected against A. stephensi (LC 50 = 12.40 lg/ml), followed by A. aegypti (LC 50 = 13.57 lg/ml) and C. quinquefasciatus (LC 50 = 14.84 lg/ ml). A single treatment with AgNPs tested at 60, 75 and 90 lg/ml led to no egg hatchability. In adulticidal experiments, the maximum efficacy was observed on A. stephensi (LD 50 = 31.60 lg/ml), followed by A. aegypti (LD 50 = 34.31 lg/ml) and C. quinquefasciatus (LD 50 = 37.52 lg/ml), respectively. AgNPs were safer for three non-target mosquito natural enemies, Anisops bouvieri, Diplonychus indicus and Gambusia affinis, with LC 50 ranging from 629 to 2111 lg/ml. Overall, N. alata-

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Section: Characterization Of Silver Nanoparticlessupporting

confidence: 93%

Single-Step Biofabrication of Silver Nanocrystals Using Naregamia alata: A Cost Effective and Eco-Friendly Control Tool in the Fight Against Malaria, Zika Virus and St. Louis Encephalitis Mosquito Vectors

Azarudeen¹,

Govindarajan

Amsath³

et al. 2016

J Clust Sci

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“…Table summarizes some of the applications of the Ag NPs synthesized by various biological species such as fungus, bacteria, yeast and plants . In recent years, the application of biosynthesized Au NPs using plant extracts in biomedicine, environmental monitoring, control of infectious disease, gene and drug delivery, delivery of peptides, proteins or nucleic acids such as DNA or RNA, as carriers in the anticancer agent preparation and antibacterial and antimicrobial agents against gram‐negative and gram‐positive bacteria, viruses or fungi has been an established fact . Table summarizes some of the recent reports regarding the applications of biosynthesized Ag NPs as antifungal, anticancer, antiprotozoal, antimicrobial and antibacterial agents.…”

Section: Introductionmentioning

confidence: 99%

Recent Developments in the Plant‐Mediated Green Synthesis of Ag‐Based Nanoparticles for Environmental and Catalytic Applications

Nasrollahzadeh

Yek

Motahharifar

et al. 2019

The Chemical Record

146

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Among different metallic nanoparticles, sliver nanoparticles (Ag NPs) are one of the most essential and fascinating nanomaterials. Importantly, among the metal based nanoparticles, Ag NPs play a key role in various fields such as biomedicine, biosensors, catalysis, pharmaceuticals, nanoscience and nanotechnology, particularly in nanomedicine. A main concern about the chemical synthesis of Ag NPs is the production of hazardous chemicals and toxic wastes. To overcome this problem, many research studies have been carried out on the green synthesis of Ag NPs using green sources such as plant extracts, microorganisms and some biopolymers without formation of hazardous wastes. Among green sources, plants could be remarkably valuable to exploring the biosynthesis of Ag NPs. In this review, the green synthesis of Ag‐based nanocatalysts such as Ag NPs, AgPd NPs, Au−Ag NPs, Ag/AgPd NPs, Ag/Cu NPs, Ag@AgCl NPs, Au−Ag@AgCl nanocomposite, Ag−Cr‐AC nanocomposite and Ag NPs immobilized on various supports such as Natrolite zeolite, bone, ZnO, seashell, hazelnut shell, almond shell, SnO2, perlite, ZrO2, TiO2, α‐Al2O3, CeO2, reduced graphene oxide (rGO), h‐Fe2O3@SiO2, and Fe3O4 using numerous plant extracts as reducing and stabilizing agents in the absence of hazardous surfactant and capping agents has been focused. This work describes the state of the art and future challenges in the biosynthesis of Ag‐based nanocatalysts. The fact about the application of living plants in metal nanoparticle (MNPs) industry is that it is a more economical and efficient biosynthesis biosynthetic procedure. In addition, the catalytic activities of the synthesized, Ag‐based recyclable nanocatalysts using various plant extracts in several chemical reactions such as oxidation, reduction, coupling, cycloaddition, cyanation, epoxidation, hydration, degradation and hydrogenation reactions have bben extensively discussed.

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“…The presence of these compounds in the chemical composition of S. trilobata makes it a widely used species in folk medicine. Phenols and flavonoids are potent antioxidants (PRIOR & CAO, 2000;VIEIRA et al, 2015), and flavonoids also exhibit antimicrobial activity (RAJARATHINAM & DRONAMRAJU, 2018). Terpenes exhibit antinociceptive, anti-inflammatory, and antimicrobial properties (SARTORI, 2005), and anthracene derivatives, the presence of which has not been reported in this species to date, exhibit astringent activity (SOUSA et al, 2003).…”

Section: S Trilobata Contains Several Classes Of Secondary Metabolites Exhibiting Pharmacologicalmentioning

confidence: 99%

Phytochemical screening and antimicrobial activity testing of crude hydroalcoholic extract from leaves of Sphagneticola trilobata (Asteraceae)

et al. 2019

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This study aimed to perform phytochemical analysis and to test the antimicrobial activity of the crude hydroalcoholic extract obtained from the leaves of Sphagneticola trilobata. Classes of secondary metabolites present in the extract were identified through phytochemical screening using analytical thin-layer chromatography. Antimicrobial activity was evaluated by testing cultures of Staphylococcus aureus, S. epidermidis, Staphylococcus spp., Escherichia coli, Serratia marcescens, Enterococcus faecalis, Pseudomonas aeruginosa, Salmonella Typhimurium, and Klebsiella pneumoniae isolated from human skin and those of Staphylococcus spp. isolated from dog skin using the broth microdilution method. In the phytochemical screening, classes of anthracenic derivatives and mono-, sesqui-, and diterpenes were identified. Colorimetric analysis showed total phenol and total flavonoid contents of 21.7 ± 0.009 mg of gallic acid equivalents per gram of sample and 0.23 ± 0.005 mg of catechin equivalents per gram of sample, respectively. Microbiological analysis revealed that the hydroalcoholic extract of S. trilobata exhibited antimicrobial activity against cultures of Staphylococcus spp., E. coli, S. marcescens, and E. faecalis isolated from human skin and those of Staphylococcus spp. isolated from dog skin. Thus, crude hydroalcoholic extract of leaves of S. trilobata contained flavonoids and terpenoids as secondary metabolites, which contributed to its antimicrobial activity against skin bacteria isolated from different sources.

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In vitro and in silico antimicrobial activity of sterol and flavonoid isolated from Trianthema decandra L.

Cited by 23 publications

References 20 publications

Single-Step Biofabrication of Silver Nanocrystals Using Naregamia alata: A Cost Effective and Eco-Friendly Control Tool in the Fight Against Malaria, Zika Virus and St. Louis Encephalitis Mosquito Vectors

Single-Step Biofabrication of Silver Nanocrystals Using Naregamia alata: A Cost Effective and Eco-Friendly Control Tool in the Fight Against Malaria, Zika Virus and St. Louis Encephalitis Mosquito Vectors

Recent Developments in the Plant‐Mediated Green Synthesis of Ag‐Based Nanoparticles for Environmental and Catalytic Applications

Phytochemical screening and antimicrobial activity testing of crude hydroalcoholic extract from leaves of Sphagneticola trilobata (Asteraceae)

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