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Green synthesis of silver nanoparticles using Pinus nigra bark aqueous extract and their potential applications PO-24

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Trends in Natural Product Research – PSE Young Scientists’ Meeting Budapest, June 19th-21st, 2019

106

PO-24

doi: 10.14232/tnpr.2019.po24

Green synthesis of silver nanoparticles using Pinus nigra bark aqueous extract and their potential applications

Irina Macovei1, Valeria Harabagiu2, Liviu Săcărescu 2, Petronela Pascariu2, Alina Diaconu2, Cristina Lungu2, Bianca Ivănescu2, Elvira Gille3 and Anca Miron1,*

1 Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy, Iasi, Romania.

2 Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania.

3 Stejarul Biological Research Centre/National Institute of Research and Development for Biological Sciences, Piatra Neamt, Romania.

*E-mail: anca.miron@umfiasi.ro

This study aimed to develop an innovative, eco-friendly, cost-effective and rapid method for the synthesis of silver nanoparticles from a silver salt and Pinus nigra bark aqueous extract [1,2]. The extract had a total phenolic content of 1.26 mg/mL, procyanidins being major constituents as revealed by HPLC-DAD-ESI-Q-TOF-MS/MS analysis. The synthesis of silver nanoparticles was monitored by UV-VIS spectroscopy which showed a peak between 420 and 430 nm corresponding to the surface plasmon resonance of silver nanoparticles. Dynamic light scattering technique revealed uniform and stable silver nanoparticles indicated by a size range between 50 and 60 nm and a zeta potential of -16 mV. Electron transmission microscopy showed a uniformly distributed spherical shape, while the EDX analyse confirmed a crystalline elemental silver composition of the bio-synthesised silver nanoparticles. Moreover, the potential genotoxicity and antioxidant capacity of Pinus nigra bark aqueous extract before and after silver nanoparticles synthesis was screened using Allium cepa root apexes and DPPH assays, respectively. To conclude, we present herein a facile route for the synthesis of silver nanoparticles which could be further explored for their therapeutic applications due to promising antioxidant and cell cycle arrest potential.

References

[1] Karthika V et al. J Photochem Photobiol B. 2017; 167:189-199.

[2] Nasiriboroumand M et al. J Photochem Photobiol B. 2018 ; 179 :98-104.

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