Biosynthesis, characterization, and evaluation of bioactivities of leaf extract-mediated biocompatible gold nanoparticles from Alternanthera bettzickiana

Nagalingam, M.; Kalpana, V.N.; Rajeswari, V. Devi; Panneerselvam, A.

doi:10.1016/j.btre.2018.e00268

Cited by 49 publications

(15 citation statements)

References 42 publications

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“…Similar spectra were discovered in the FTIR analysis of AuNPs synthesized from various other natural materials. 29 , 30 The broad band at 3253 cm –1 represents O–H stretching, the band at 2940 cm –1 represents the presence of the C–H stretch of the alkane group, the band at 1580 cm –1 for the C–N, the band at 1409 cm –1 for the C–H, and the band at 1039 cm –1 shows the C–N stretch of aliphatic amines. 30 Similar types of FTIR spectra in the case of C1-AgNPs have also been observed, which are recognized AgNP characteristics.…”

Section: Resultsmentioning

confidence: 99%

“… 29 , 30 The broad band at 3253 cm –1 represents O–H stretching, the band at 2940 cm –1 represents the presence of the C–H stretch of the alkane group, the band at 1580 cm –1 for the C–N, the band at 1409 cm –1 for the C–H, and the band at 1039 cm –1 shows the C–N stretch of aliphatic amines. 30 Similar types of FTIR spectra in the case of C1-AgNPs have also been observed, which are recognized AgNP characteristics. The particular bands were found to be present at 3281, 2948, 1646, 1540, 1390, and 956 cm –1 , respectively ( Figure 2 D).…”

Section: Resultsmentioning

confidence: 99%

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Inhibition of Biofilm and Virulence Properties of Pathogenic Bacteria by Silver and Gold Nanoparticles Synthesized from Lactiplantibacillus sp. Strain C1

et al. 2023

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The emergence of antibiotic resistance in microbial pathogens necessitates the development of alternative ways to combat the infections that arise. The current study used nanotechnology as an alternate technique to control virulence characteristics and biofilm development in Pseudomonas aeruginosa and Staphylococcus aureus. Furthermore, based on the acceptance and biocompatibility of the probiotic bacteria, we chose a lactic acid bacteria (LAB) for synthesizing two types of metallic nanoparticles (NPs) in this study. Using molecular techniques, the LAB strain C1 was isolated from Kimchi food samples and identified as Lactiplantibacillus sp. strain C1. The prepared supernatant from strain C1 was used to produce gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs). C1-AuNPs and C1-AgNPs were characterized physiochemically using a variety of instruments. C1-AuNPs and C1-AgNPs had spherical shapes and sizes of 100.54 ± 14.07 nm (AuNPs) and 129.51 ± 12.31 nm (AgNPs), respectively. C1-AuNPs and C1-AgNPs were discovered to have high zeta potentials of −23.29 ± 1.17 and −30.57 ± 0.29 mV, respectively. These nanoparticles have antibacterial properties against several bacterial pathogens. C1-AuNPs and C1-AgNPs significantly inhibited the initial stage biofilm formation and effectively eradicated established mature biofilms of P. aeruginosa and S. aureus. Furthermore, when P. aeruginosa was treated with sub-MIC levels of C1-AuNPs and C1-AgNPs, their different virulence features were significantly reduced. Both NPs greatly inhibited the hemolytic activity of S. aureus. The inhibition of P. aeruginosa and S. aureus biofilms and virulence features by C1-AuNPs and C1-AgNPs can be regarded as viable therapeutic strategies for preventing infections caused by these bacteria.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Inhibition of Biofilm and Virulence Properties of Pathogenic Bacteria by Silver and Gold Nanoparticles Synthesized from Lactiplantibacillus sp. Strain C1

et al. 2023

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“…The peak at 1,651 cm −1 corresponds to -C=O and C=C stretching vibrations ( Torres-Liminana et al, 2022 ). The absorption bands at 1,382 cm −1 and 1,327 cm −1 are associated with C-N stretching of aromatic amine groups and N-O symmetric stretching of nitro compounds, respectively ( Rastogi and Arunachalam, 2012 ; Nagalingam et al, 2018 ). The peaks observed at 1085 cm −1 correspond with the C-O of the alcoholic group ( Aroob et al, 2023 ).…”

Section: Resultsmentioning

confidence: 99%

Padina boergesenii mediated synthesis of Se-ZnO bimetallic nanoparticles for effective anticancer activity

Thirupathi,

Pongen,

Kaveriyappan

et al. 2024

Front. Microbiol.

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IntroductionEvaluating the anticancer property of Padina boergesenii mediated bimetallic nanoparticles.MethodsThe present study focuses on synthesizing Se-ZnO bimetallic nanoparticles from an aqueous algal extract of brown algae Padina boergesenii.Synthesized Se-ZnO NPs were characterized by UV, FTIR, SEM-EDS and HRTEM for confirmation along with the anticancer activity by MTT assay.ResultsThe UV gave an absorbance peak at 342 and 370 nm, and the FTIR showed functional groups involved in synthesizing Se-ZnO NPs. The TEM micrographs indicated the crystalline nature and confirmed the size of the Se-ZnO NPs to be at an average size of 26.14 nm. Anticancer efficacy against the MCF-7 breast and HepG2 (hepatoblastoma) cell lines were also demonstrated, attaining an IC50 value of 67.9 µg and 74.9 µg/ml respectively, which caused 50% cell death.DiscussionThis work aims to highlight an effective method for delivering bioactive compounds extracted from brown algae and emphasize its future therapeutic prospects. The potential of Selenium-Zinc oxide nanoparticles is of great interest due to the biocompatibility and low toxicity aspects of selenium combined with the cost-effectiveness and sustainability of zinc metal. The presence of bioactive compounds contributed to the stability of the nanoparticles and acted as capping properties.

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“…AuNPs possess catalytic, antibacterial, antioxidant, and anticancer properties. 67 The bio-production of these nanoparticles has garnered significant attention due to their antibacterial potential, 69,70,91 which may aid in combating multi-drug resistant microorganisms. Additionally, they have demonstrated anti-cancer effects.…”

Section: Methodsmentioning

confidence: 99%

Green Synthesis of Silver and Gold Nanoparticles by Aqueous Artemisia Pallens Extract

Verma

2024

Preprint

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We successfully harnessed the potential of Artemisia pallens extracts for the eco-friendly biosynthesis of silver, gold, and silver-gold bimetallic nanoparticles, employing aqueous silver nitrate and chloroauric acid solutions. This innovative approach departs from traditional methods, often involving toxic chemical agents like hydrazine hydrate and sodium borohydride. In the quest for greener protocols, the biological route emerges as a non-toxic, straightforward, and environmentally sound alternative, opening new avenues for translational research. This article discusses the production of silver, gold, and silver-gold nanoparticles using different species of Artemisia plants. Nanoparticle characterization was carried out using UV-visible spectrophotometry, TEM, XRD, and FTIR techniques. Microwave-assisted synthesis resulted in well-dispersed nanoparticles. In the case of silver nanoparticles, a spherical shape with a size of 6 nm was achieved using the microwave radiation-assisted method, while a size of 20 nm was obtained with UV-assisted synthesis. Gold nanoparticles exhibited diverse shapes, including spherical, triangular, prisms, trapezoids, and hexagonal, with a predominant size of 10 nm. The size range for gold nanoparticles varied from 10 nm to 400 nm.

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Biosynthesis, characterization, and evaluation of bioactivities of leaf extract-mediated biocompatible gold nanoparticles from Alternanthera bettzickiana

Cited by 49 publications

References 42 publications

Inhibition of Biofilm and Virulence Properties of Pathogenic Bacteria by Silver and Gold Nanoparticles Synthesized from Lactiplantibacillus sp. Strain C1

Inhibition of Biofilm and Virulence Properties of Pathogenic Bacteria by Silver and Gold Nanoparticles Synthesized from Lactiplantibacillus sp. Strain C1

Padina boergesenii mediated synthesis of Se-ZnO bimetallic nanoparticles for effective anticancer activity

Green Synthesis of Silver and Gold Nanoparticles by Aqueous Artemisia Pallens Extract

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