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Synthesis, Characterization, and Optimization of Green Silver Nanoparticles Using Neopestalotiopsis clavispora and Evaluation of Its Antibacterial, Antibiofilm, and Genotoxic Effects Cover

Synthesis, Characterization, and Optimization of Green Silver Nanoparticles Using Neopestalotiopsis clavispora and Evaluation of Its Antibacterial, Antibiofilm, and Genotoxic Effects

Open Access
|Jul 2021

Figures & Tables

Figure 1

Isolation and identification of N. clavispora A: PDA was used for fungus isolation from decaying wood samples. B: Morphology of the fungus at CDA (B1: Upperside, B2: Reverse side) C: Morphology of the fungus at MEA (C1: Upperside, C2: reverse side), D; Amplification ITS profiles of N. clavispora at agarose gel electrophoresis.

Figure 2

UV–Vis spectroscopy of AgNPs synthesized using CFF.

Figure 3

Effect of pH (A), temperature (B), substrate concentration (C), and exposure periods (D) on the substrate on the stability of AgNPs synthesis.

Figure 4

FTIR spectrum of green synthesized AgNPs

Figure 5

TEM images of AgNPs for scale bar of a) 50 nm b) 100 nm.

Genotoxic evaluation of AgNO3 and AgNPs using SMART assay

TreatmentsNumber of Wings (N)Small uniform clones (1-2 cells) (m=2)Large uniform clones (> 2 cells) (m=5)Twin clones (m=5)Total mwh clones (m=2)Total clones (m=2)
No.Fr.D.No.Fr.D.No.Fr.D.No.Fr.D.No.Fr.D.
Normal Wing
Distilled Water8012(0.16) 2(0.02) 0(0.00) 13(0.19) 14(0.19)0.76
1 EMS mM3169(2.21)+27(0.83)+9(0.27)+105(3.31)+104(3.40)+ 5.38
AgNO3 (ppm)
0.18015(0.16)i5(0.06)i0(0.00)i20(0.25)i20(0.25)i 1.02
1809(0.07)-2(0.02)i0(0.00)-8(0.10)-1(0.10)- 0.41
10805(0.01)-2(0.02)i0(0.00)-3(0.03)-7(0.03)- 0.15
AgNPs (ppm)
0.18015(0.16)i5(0.06)i0(0.00)i20(0.25)i20(0.25)i 1.02
1806(0.05)-2(0.02)i0(0.00)-8(0.8)-8(0.8)- 0.39
10804(0.01)-2(0.02)i0(0.00)-3(0.03)-6(0.03)- 0.15

Antimicrobial activity of CFF, AgNO3, and AgNPs_

AgentsDiameter zone (mm) ± Standard Deviation
S. aureus ATCC 25923P. aeruginosa ATCC 27853E. coli ATCCC 25922B. subtilis
Vancomycin (30 μg)21±28.67±0.5825±12±1.73
Penicillin (10 μg)41±3Not determined33.67±0.5830.67±2.08
Chloramphenicol (30 μg)26.67±0.5816±1.7330.33±1.5336±1.73
Erythromycin (15 μg)30.33±2.089±126.67±1.5329±1
Tetracycline (30 μg)30.33±2.5214.67±0.5811.67±0.5816±2
Cell-Free Filtrate0000
Ag NO3 2,5 mM18.33±1.5313±114.33±1.1516.33±1.53
AgNPs10 ppm10±1.7312.33±1.5312.33±1.5317± 1
1 ppm9±11±1.73016.33± 2.08
0.1 ppm0008.33±0.58

Biofilm inhibition (%) of AgNPs against P_ aeruginosa ATCC 27853

AgNPs
Inhibition % (n=3)10 ppm1 ppm0.1 ppm
81.1367.6340.28
76.2565.4545.11
80.6263.3240.43
Average biofilm inhibition (%) ± Standard Deviation79.33±2.6865.47±2.1641.94±2.75
Language: English
Page range: 109 - 122
Published on: Jul 24, 2021
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2021 Tuğba Kahraman, Safiye Elif Korcan, Recep Liman, İbrahim Hakkı Ciğerci, Yaser Acikbas, Muhsin Konuk, Gülderen Uysal Akkuş, published by European Biotechnology Thematic Network Association
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.