Bactericidal potential of different size sericin‐capped silver nanoparticles synthesized by heat, light, and sonication

Summer, Muhammad; Tahir, Hafız Muhammad; Ali, Shaukat; Abaidullah, Rimsha; Mumtaz, Shumaila; Nawaz, Saira; Azizullah,

doi:10.1002/jobm.202200632

Cited by 18 publications

(13 citation statements)

References 80 publications

(120 reference statements)

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“…(2023) and Subhani et al . (2023) also reported the shifting of the color of the solution when added with natural reducing agents or phytosubstances [45–47] . Following the UV–vis spectral study, the peak was also found at 425 nm which authenticated the fabrication of AgNPs.…”

Section: Discussionmentioning

confidence: 89%

“…(2019) demonstrated that the bioactivity of AgNPs depends on various properties such as charges, morphology, and surface plasmon resonance [57] . The polydispersity index of the prepared NPs was found less than 0.5 which is a confirmation of the normal small size distribution of the NPs for significant bactericidal activity [46] . According to previous reports, the main integrated peaks 27.79°, 32.08°, 45.88°, 56.88, and 66.50° of XRD diffractogram at 2 θ values were observed [58] .…”

Section: Discussionmentioning

confidence: 95%

“…Many other researchers including Tahir et al (2020), Summer et al (2023) and Subhani et al (2023) also reported the shifting of the color of the solution when added with natural reducing agents or phytosubstances. [45][46][47] Following the UV-vis spectral study, the peak was also found at 425 nm which authenticated the fabrication of AgNPs. As noted by Moodley, 2018 the peak of the Mo-AgNPs spectrum was also at 440 nm, which is consistent with the findings of present research.…”

Section: Discussionmentioning

confidence: 99%

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Bactericidal and Antioxidant Potential of Moringa oleifera Capped Silver Nanoparticles under Varied Conditions

Ali,

Shahbaz

et al. 2023

ChemistrySelect

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Microbial infections have consistently been identified as one of the major threats to global health. In this regard, the current study was designed to synthesize and evaluate the antibacterial activity of Mo‐AgNPs at various concentrations (2, 4, and 8 mg/mL), temperatures (4 °C, 25 °C, 37 °C, and 85 °C) and pH (4, 7, and 11) against Gram‐negative bacteria (Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Aeromonas veronii) and Gram‐positive bacteria (Staphylococcus aureus, Bacillus subtilis) by the well diffusion method as well as antioxidant potential using DPPH assay at 2 mg/mL and 4 mg/mL. Fabrication of Mo‐AgNPs was authenticated by UV–visible spectroscopy (UV–Vis), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and X‐ray diffraction (XRD). Mo‐AgNPs produced a significant zone of growth inhibition (21.0±0.3 mm) against B. subtilis at 8 mg/mL. At 25 °C, a significant zone of growth inhibition (21.0±0.8 mm) was measured against E. coli. Similarly, at pH 4, Mo‐AgNPs showed significantly highest growth inhibition zones of 12.0±7.5 mm, 12.0±6.3 mm, and 12.0±9.8 mm against P. aeruginosa, K. pneumoniae, and A. veronii, respectively. The present study results indicated that Mo‐AgNPs are stable under varied conditions. Significant free radical scavenging activity (82±0.5 %) of Mo‐AgNPs at 4 mg/mL was observed, which revealed the antioxidant potential of the Mo‐AgNPs.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

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Bactericidal and Antioxidant Potential of Moringa oleifera Capped Silver Nanoparticles under Varied Conditions

Ali,

Shahbaz

et al. 2023

ChemistrySelect

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“…Using ultrasonic homogenizer/sonicator (CY‐500), Se‐AgNPs were manufactured by administering the analytical‐grade silver nitrate (AgNO 3 , Sigma Aldrich, Germany, purity: 99.3%) with sericin in 1:2.5 (40 mg silver/100 mL of sericin 0.15%/15 mg) at 40°C for 1 h with pulse rate of (15:05) and intensity of 90 (Summer et al, 2023). After the optimum exposure to the ultrasound waves, color of the solution was converted from colorless to dark brown.…”

Section: Methodsmentioning

confidence: 99%

Sonication and heat‐mediated synthesis, characterization and larvicidal activity of sericin‐based silver nanoparticles against dengue vector (Aedes aegypti)

Summer

Tahir

Ali

2023

Microscopy Res & Technique

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Fabrication, characterization and evaluation of the larvicidal potential of novel silk protein (sericin)‐based silver nanoparticles (Se‐AgNPs) were the prime motives of the designed study. Furthermore, investigation of the sericin as natural reducing or stabilizing agent was another objective behind this study. Se‐AgNPs were synthesized using sonication and heat. Fabricated Se‐AgNPs were characterized using particle size analyzer, UV spectrophotometry, FTIR and SEM which confirmed the fabrication of the Se‐AgNPs. Size of sonication‐mediated Se‐AgNPs was smaller (7.49 nm) than heat‐assisted Se‐AgNPs (53.6 nm). Being smallest in size, sonication‐assisted Se‐AgNPs revealed the significantly highest (F4,10 = 39.20, p = .00) larvicidal activity against fourth instar lab and field larvae (F4,10 = 1864, p = .00) of dengue vector (Aedes aegypti) followed by heat‐assisted Se‐AgNPs and positive control (temephos). Non‐significant larvicidal activity was showed by silver (without sericin) which made the temperature stability of silver, debatable. Furthermore, findings of biochemical assays (glutathione‐S transferase, esterase, and acetylcholinesterase) showed the levels of resistance in field strain larvae. Aforementioned findings of the study suggests the sonication as the best method for synthesis of Se‐AgNPs while the larvicidal activity is inversely proportional to the size of Se‐AgNPs, i.e., smallest the size, highest the larvicidal activity. Conclusively, status of the sericin as a natural reducing/stabilizing agent has been endorsed by the findings of this study.

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“…Different effects can be caused by physically or chemically synthesized AgNPs including DNA damage, developmental abnormalities, variation in the gene expression, and disturbance of the metabolism depending on concentration. The toxicity of AgNPs varies significantly depending on the shape, size, exposure pathway, and capping agents [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Green Biogenic of Silver Nanoparticles Using Polyphenolic Extract of Olive Leaf Wastes with Focus on Their Anticancer and Antimicrobial Activities

Alowaiesh

Alhaithloul

Saad

et al. 2023

Plants

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Agro-industrial wastes are rich in polyphenols and other bioactive compounds, and valorizing these wastes is a crucial worldwide concern for saving health and the environment. In this work, olive leaf waste was valorized by silver nitrate to produce silver nanoparticles (OLAgNPs), which exhibited various biological, antioxidant, anticancer activities against three cancer cell lines, and antimicrobial activity against multi-drug resistant (MDR) bacteria and fungi. The obtained OLAgNPs were spherical, with an average size of 28 nm, negatively charged at −21 mV, and surrounded by various active groups more than the parent extract based on FTIR spectra. The total phenolic and total flavonoid contents significantly increased in OLAgNPs by 42 and 50% over the olive leaf waste extract (OLWE); consequently, the antioxidant activity of OLAgNPs increased by 12% over OLWE, recording an SC50 of OLAgNPs of 5 µg/mL compared to 30 µg/mL in the extract. The phenolic compound profile detected by HPLC showed that gallic acid, chlorogenic acid, rutin, naringenin, catechin, and propyl gallate were the main compounds in the HPLC profile of OLAgNPs and OLWE; the content of these compounds was higher in OLAgNPs than OLWE by 16-fold. The higher phenolic compounds in OLAgNPs are attributable to the significant increase in biological activities of OLAgNPs than that of OLWE. OLAgNPs successfully inhibited the proliferation of three cancer cell lines, MCF-7, HeLa, and HT-29, by 79–82% compared to 55–67% in OLWE and 75–79% in doxorubicin (DOX). The preliminary worldwide problem is multi-drug resistant microorganisms (MDR) because of the random use of antibiotics. Therefore, in this study, we may find the solution in OLAgNPs with concentrations of 2.5–20 µg/mL, which significantly inhibited the growth of six MDR bacteria L. monocytogenes, B. cereus, S. aureus, Y. enterocolitica, C. jejuni, and E. coli with inhibition zone diameters of 25–37 mm and six pathogenic fungi in the range of 26–35 mm compared to antibiotics. OLAgNPs in this study may be applied safely in new medicine to mitigate free radicals, cancer, and MDR pathogens.

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Bactericidal potential of different size sericin‐capped silver nanoparticles synthesized by heat, light, and sonication

Cited by 18 publications

References 80 publications

Bactericidal and Antioxidant Potential of Moringa oleifera Capped Silver Nanoparticles under Varied Conditions

Bactericidal and Antioxidant Potential of Moringa oleifera Capped Silver Nanoparticles under Varied Conditions

Sonication and heat‐mediated synthesis, characterization and larvicidal activity of sericin‐based silver nanoparticles against dengue vector (Aedes aegypti)

Green Biogenic of Silver Nanoparticles Using Polyphenolic Extract of Olive Leaf Wastes with Focus on Their Anticancer and Antimicrobial Activities

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