Termiticidal activity of mycosynthesized silver nanoparticles from Aspergillus fumigatus BTCB15

Iqtedar, Mehwish; Mirza, Nahreen; Aethesham, A.; Iftikhar, Shan; Kaleem, Afshan; Abdullah, R.

doi:10.24275/rmiq/bio1022

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…In recent years, the biosynthesis of AgNPs by microorganisms, plants, and their extracts have attracted considerable attention. At present, it has been found that a variety of microorganisms, including bacteria, [3,4] yeast, [5] and fungi, [6,7] have the ability to synthesize nanoparticles. Microbial system-mediated (bacterial and fungal) synthesis of nanoparticles has some advantages over other methods because they are easy to control during the synthesis process.…”

Section: Introductionmentioning

confidence: 99%

Monascus pigment‐mediated green synthesis of silver nanoparticles: Catalytic, antioxidant, and antibacterial activity

Zhang

Guo

et al. 2021

Applied Organom Chemis

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In order to explore green and efficient methods for the synthesis of nanoparticles, silver nanoparticles (AgNPs) were rapidly synthesized assisted by the Monascus pigments under simulated sunlight. Prepared AgNPs were characterized using various analytical tools such as ultraviolet‐visible (UV–Vis) spectroscopy, Zeta, X‐ray diffraction (XRD), scanning electron microscopy (SEM)–energy dispersive X‐ray (EDX), and Fourier‐transform infrared spectroscopy (FT‐IR). There is an absorption peak at 410 nm in the UV–Vis absorption spectrum, which confirms the formation of AgNPs. XRD results affirmed that the synthesized AgNPs were crystalline in nature and preferentially oriented in (111) plane. The morphology of the nanoparticles was found to be spherical by SEM and particle size analysis study revealed the average particle size to be 18.10 ± 0.30 nm. Zeta potential measurement showed excellent stability of AgNPs with negative values of −9.2 ± 0.66 mV. The FT‐IR study represented involvement of functional groups in AgNPs synthesis. The biosynthesized AgNPs exhibited significant antibacterial activity with zones of inhibition of 9.1, 14.5, and 18.0 mm against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus, respectively. Through the determination of hydroxyl radical scavenging capacity, ABTS radical scavenging capacity, total reducing power, and total antioxidant capacity, it is proved that the AgNPs have certain antioxidant capacity. In addition, AgNPs could catalyze the degradation of methylene blue, methyl orange, and congo red with a pseudo first‐order rate constants of 0.07998, 0.24666, and 0.11805 min−1, respectively. Overall studies indicated that the Monascus pigments could be used to prepare AgNPs with potential antibacterial, antioxidant, and extraordinary catalytic activity. It can be used in biomedical applications, commercial food packaging, pathogen mitigation, and industrial waste water management.

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Section: Introductionmentioning

confidence: 99%

Monascus pigment‐mediated green synthesis of silver nanoparticles: Catalytic, antioxidant, and antibacterial activity

Zhang

Guo

et al. 2021

Applied Organom Chemis

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“…The application of silver nanoparticles (AgNPs) has become increasingly popular for enhancing diverse wood properties, including resistance to biological degradation, water absorption capacity, and dimensional stability. These improvements are achieved through both depth and surface treatments, spanning various concentrations of AgNPs [16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles and Chitosan Oligomers Composites as Poplar Wood Protective Treatments against Wood-Decay Fungi and Termites

Spavento,

de Troya-Franco,

Acuña-Rello

et al. 2023

Forests

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This study focuses on Populus ×euramericana (Dode) Guinier, a globally distributed fast-growing tree. Despite its valuable wood, it exhibits low durability. The aim of this study was to assess the efficacy of a binary composite comprising silver nanoparticles (AgNPs) and chitosan oligomers (COS) in protecting P. ×euramericana ‘I-214’ wood against degradation caused by xylophagous fungi and termites through vacuum-pressure impregnation. The test material was carefully selected and conditioned following the guidelines of EN 350:2016, and impregnation was carried out in accordance with EN 113-1:2021. Five concentrations of AgNPs–COS composites were utilized. Biodeterioration resistance was evaluated based on EN 350:2016 for white (Trametes versicolor (L.) Lloyd) and brown (Coniophora puteana (Schumach.) P.Karst.) rot fungi, and EN 117:2012 for subterranean termites (Reticulitermis grassei Clément). The durability class and use class were assigned following EN 350:2016 and EN 335:2013, respectively. In comparison to the untreated control, the binary solution at its highest concentration (AgNPs 4 ppm + COS 20 g·L−1) demonstrated a notable reduction in weight loss, decreasing from 41.96 ± 4.49% to 30.15 ± 3.08% for white-rot fungi and from 41.93 ± 4.33% to 27.22 ± 0.66% for brown rot fungi. Furthermore, the observed termite infestation shifted from “heavy” to “attempted attack”, resulting in a decrease in the survival rate from 53.98 ± 10.40% to 26.62 ± 8.63%. Consequently, the durability classification of P. ×euramericana I-214 witnessed an enhancement from “Not durable” to “Slightly” and “Moderately durable” concerning decay fungi and termites, respectively. These findings expand the potential applications of this wood and substantiate the advantages of employing this environmentally friendly treatment.

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Biosynthesis and green synthesis of nanoparticles and their use in agriculture

Sarlak

Abdi

2022

Nano-Enabled Agrochemicals in Agriculture

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Termiticidal activity of mycosynthesized silver nanoparticles from Aspergillus fumigatus BTCB15

Abstract: Modelado de la biodegradación en biorreactores de lodos de hidrocarburos totales del petróleo intemperizados en suelos y sedimentos (Biodegradation modeling of sludge bioreactors of total petroleum hydrocarbons weathering in soil and sediments)

Cited by 4 publications

References 26 publications

Monascus pigment‐mediated green synthesis of silver nanoparticles: Catalytic, antioxidant, and antibacterial activity

Monascus pigment‐mediated green synthesis of silver nanoparticles: Catalytic, antioxidant, and antibacterial activity

Silver Nanoparticles and Chitosan Oligomers Composites as Poplar Wood Protective Treatments against Wood-Decay Fungi and Termites

Biosynthesis and green synthesis of nanoparticles and their use in agriculture

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