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Article

Role of Synthetic Plant Extracts on the Production of Silver-Derived Nanoparticles

1
Research Group FiVe-A, Plant Physiology Unit, Faculty of Biology, Universidad Complutense de Madrid, Ciudad Universitaria, 28040 Madrid, Spain
2
Research Group FiVe-A, College of Forestry and Natural Environment, Universidad Politécnica de Madrid, Ciudad Universitaria, 28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Ambrosone Alfredo
Plants 2021, 10(8), 1671; https://doi.org/10.3390/plants10081671
Received: 12 July 2021 / Revised: 5 August 2021 / Accepted: 11 August 2021 / Published: 13 August 2021
(This article belongs to the Special Issue Nanotechnology Advances in Plant Science and Biotechnology)
The main antioxidants present in plant extracts—quercetin, β-carotene, gallic acid, ascorbic acid, hydroxybenzoic acid, caffeic acid, catechin and scopoletin—are able to synthesize silver nanoparticles when reacting with a Ag NO3 solution. The UV-visible absorption spectrum recorded with most of the antioxidants shows the characteristic surface plasmon resonance band of silver nanoparticles. Nanoparticles synthesised with ascorbic, hydroxybenzoic, caffeic, and gallic acids and scopoletin are spherical. Nanoparticles synthesised with quercetin are grouped together to form micellar structures. Nanoparticles synthesised by β-carotene, were triangular and polyhedral forms with truncated corners. Pentagonal nanoparticles were synthesized with catechin. We used Fourier-transform infrared spectroscopy to check that the biomolecules coat the synthesised silver nanoparticles. X-ray powder diffractograms showed the presence of silver, AgO, Ag2O, Ag3O4 and Ag2O3. Rod-like structures were obtained with quercetin and gallic acid and cookie-like structures in the nanoparticles obtained with scopoletin, as a consequence of their reactivity with cyanide. This analysis explained the role played by the various agents responsible for the bio-reduction triggered by nanoparticle synthesis in their shape, size and activity. This will facilitate targeted synthesis and the application of biotechnological techniques to optimise the green synthesis of nanoparticles. View Full-Text
Keywords: silver nanoparticles; plant non-enzymatic antioxidants; micellar structures; cyanide silver nanoparticles; plant non-enzymatic antioxidants; micellar structures; cyanide
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MDPI and ACS Style

Al-Zahrani, S.; Astudillo-Calderón, S.; Pintos, B.; Pérez-Urria, E.; Manzanera, J.A.; Martín, L.; Gomez-Garay, A. Role of Synthetic Plant Extracts on the Production of Silver-Derived Nanoparticles. Plants 2021, 10, 1671. https://doi.org/10.3390/plants10081671

AMA Style

Al-Zahrani S, Astudillo-Calderón S, Pintos B, Pérez-Urria E, Manzanera JA, Martín L, Gomez-Garay A. Role of Synthetic Plant Extracts on the Production of Silver-Derived Nanoparticles. Plants. 2021; 10(8):1671. https://doi.org/10.3390/plants10081671

Chicago/Turabian Style

Al-Zahrani, Sabah, Sergio Astudillo-Calderón, Beatriz Pintos, Elena Pérez-Urria, José A. Manzanera, Luisa Martín, and Arancha Gomez-Garay. 2021. "Role of Synthetic Plant Extracts on the Production of Silver-Derived Nanoparticles" Plants 10, no. 8: 1671. https://doi.org/10.3390/plants10081671

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