Green Synthesis of Silver Nanoparticles for Biomedical and Environmental Applications

Varadavenkatesan, Thivaharan; Vinayagam, Ramesh; Selvaraj, Raja

doi:10.1002/9781119418900.ch12

Cited by 8 publications

(3 citation statements)

References 229 publications

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“…Variya et al indicated that both the aqueous and methanol extracts of amla were effective against a variety of pathogenic organisms, including Klebsiella pneumoniae, E. cloacae, and E. coli [125]. The antibacterial activity of amla has been seen to vary when tested against Gram-positive and Gram-negative pathogenic bacterial species, including Bacillus subtilis, Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa, which were successfully treated using silver nanoparticles created by green synthesis using the fruits and leaves of amla [126]. Ramanuj et al observed the bacteriostatic effect of Emblica officinalis seed fractions against Acinetobacter baumannii [127].…”

Section: Discussionmentioning

confidence: 99%

Phenotypic Analysis, Molecular Characterization, and Antibiogram of Caries-Causing Bacteria Isolated from Dental Patients

Farva,

Sattar,

Ullah

et al. 2023

Microorganisms

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Dental caries is a biofilm-mediated, sugar-driven, multifactorial, dynamic disease that results in the phasic demineralization and remineralization of dental hard tissues. Despite scientific advances in cariology, dental caries remains a severe global concern. The aim of this study was to determine the optimization of microbial and molecular techniques for the detection of cariogenic pathogens in dental caries patients, the prevalence of cariogenic bacteria on the basis of socioeconomic, climatological, and hygienic factors, and in vitro evaluation of the antimicrobial activity of selected synthetic antibiotics and herbal extracts. In this study, oral samples were collected from 900 patients for bacterial strain screening on a biochemical and molecular basis. Plant extracts, such as ginger, garlic, neem, tulsi, amla, and aloe vera, were used to check the antimicrobial activity against the isolated strains. Synthetic antimicrobial agents, such as penicillin, amoxicillin, erythromycin, clindamycin, metronidazole, doxycycline, ceftazidime, levofloxacin, and ciprofloxacin, were also used to access the antimicrobial activity. Among 900 patients, 63% were males and 37% were females, patients aged between 36 and 58 (45.7%) years were prone to disease, and the most common symptom was toothache (61%). For oral diseases, 21% used herbs, 36% used antibiotics, and 48% were self-medicated, owing to sweets consumption (60.66%) and fizzy drinks and fast food (51.56%). Staphylococcus mutans (29.11%) and Streptococcus sobrinus (28.11%) were found as the most abundant strains. Seven bacterial strains were successfully screened and predicted to be closely related to genera S. sobrinus, S. mutans, Actinomyces naeslundii, Lactobacillus acidophilus, Eubacterium nodatum, Propionibacterium acidifaciens, and Treponema Pallidum. Among plant extracts, the maximum zone of inhibition was recorded by ginger (22.36 mm) and amla (20.01 mm), while among synthetic antibiotics, ciprofloxacin and levofloxacin were most effective against all microbes. This study concluded that phyto extracts of ginger and amla were considered suitable alternatives to synthetic antibiotics to treat dental diseases.

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Section: Discussionmentioning

confidence: 99%

Phenotypic Analysis, Molecular Characterization, and Antibiogram of Caries-Causing Bacteria Isolated from Dental Patients

Farva,

Sattar,

Ullah

et al. 2023

Microorganisms

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“…Utilizing an environmentally friendly strategy that involves organic SNP synthesis using plant-based extracts may be the solution to these negative consequences. [24,25]. Numerous physical and chemical processes result in the production of nanoparticles that are hazardous or harmful for the environment.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanoparticles from oleander using a green method, and their application in enhancing photocatalytic degradation of MB with TiO2 &CuO Nanocomposite

Shawky,

Elshypany,

Sharkawy

et al. 2023

Preprint

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The tertiary composite of TiO2/CuO @ Ag (TCA) were synthesized by the solid state method using different ratios of TiO2/CuO NCs and Ag NPs. The structural, morphological, and optical properties of nanocomposites were analysed by scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), Raman spectroscopy, UV–Vis diffuse reflectance spectra (UV–Vis/DRS) and Photoluminescence (PL) spectrophotometry. The results showed enhanced activity of TCA hybrid nanocrystals in oxidizing MB in water under visible light irradiation compared to pure TiO2. The photocatalytic performance TCA samples increased with suitable Ag content. The results show that the photo degradation efficiency of the TiO2 compound improved from 13% to 85% in the presence of TiO2-CuO and to 98.87% in the presence of Ag containing TiO2-CuO, which is 7.6 times higher than that of TiO2. Optical characterization results show enhanced nanocomposite absorption in the visible region with long lifetimes between e/h+ at optimal TiO2-CuO/Ag (TCA2) ratio. Reusable experiments indicated that the prepared TCA NC photo catalysts were stable during MB photodegradation and had practical applications for environmental remediation.

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“…Therefore, researchers are paying more and more attention to the synthesis of environmentally friendly AgNPs without using harsh, toxic, and expensive chemicals. 26,27 Recently, the development of green synthesis of nanoparticles made rapid progress in the production of nanoparticles. Various plant extracts have been used for AgNPs synthesis due to their natural and active ingredients, such as Citrus limon, 28 Chenopodium album, 29 Ocimum sanctum, 30 Rumex hymenosepalus, 31 Acalypha indica, 32 reishi mushroom, 33 and jasmine ower.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis, characterization of Radix Hedysari-mediated silver nanoparticles and their use for sensitive colorimetric detection of Pb²⁺ in the Yellow River medium

Wang

et al. 2022

Anal. Methods

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Green Synthesis of Silver Nanoparticles for Biomedical and Environmental Applications

Cited by 8 publications

References 229 publications

Phenotypic Analysis, Molecular Characterization, and Antibiogram of Caries-Causing Bacteria Isolated from Dental Patients

Phenotypic Analysis, Molecular Characterization, and Antibiogram of Caries-Causing Bacteria Isolated from Dental Patients

Synthesis of silver nanoparticles from oleander using a green method, and their application in enhancing photocatalytic degradation of MB with TiO2 &CuO Nanocomposite

Green synthesis, characterization of Radix Hedysari-mediated silver nanoparticles and their use for sensitive colorimetric detection of Pb²⁺ in the Yellow River medium

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Green Synthesis of Silver Nanoparticles for Biomedical and Environmental Applications

Cited by 8 publications

References 229 publications

Phenotypic Analysis, Molecular Characterization, and Antibiogram of Caries-Causing Bacteria Isolated from Dental Patients

Phenotypic Analysis, Molecular Characterization, and Antibiogram of Caries-Causing Bacteria Isolated from Dental Patients

Synthesis of silver nanoparticles from oleander using a green method, and their application in enhancing photocatalytic degradation of MB with TiO2 &amp;CuO Nanocomposite

Green synthesis, characterization of Radix Hedysari-mediated silver nanoparticles and their use for sensitive colorimetric detection of Pb2+ in the Yellow River medium

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Product

Resources

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Synthesis of silver nanoparticles from oleander using a green method, and their application in enhancing photocatalytic degradation of MB with TiO2 &CuO Nanocomposite

Green synthesis, characterization of Radix Hedysari-mediated silver nanoparticles and their use for sensitive colorimetric detection of Pb²⁺ in the Yellow River medium