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Proceeding Paper

Processes for Preparing Peroxynitrite Electrosensitive Depositions and Methods of Selective Detection for Further Biostimulant Screening †

by
Ioana Silvia Hosu
1,*,
Anda Maria Baroi
1,2,
Roxana Ioana Matei (Brazdis)
1,3 and
Toma Fistos
1,3
1
National Institute for Research & Development in Chemistry and Petrochemistry–ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania
2
Faculty of Horticulture, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Blvd., 011464 Bucharest, Romania
3
Faculty of Chemical Engineering and Biotechnology, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania
*
Author to whom correspondence should be addressed.
†
Presented at the 19th International Symposium “Priorities of Chemistry for a Sustainable Development”, Bucharest, Romania, 11–13 October 2023.
Proceedings 2023, 90(1), 33; https://doi.org/10.3390/proceedings2023090033
Published: 13 December 2023
(This article belongs to the Proceedings of 19th International Symposium “Priorities of Chemistry for a Sustainable Development”)
Browse Figure
Versions Notes

Abstract

:
As biostimulants may have a mechanism related to increasing tolerance to abiotic stress (drought, salinity, heat shock, etc., which will increase the production of Reactive Oxygen Species, ROS, such as peroxynitrite (PON)), this work proposes electrochemical solutions for the rapid screening of biostimulants, based on a sensor’s selectivity toward PON, for further efficient biostimulant formulation, as nowadays, biostimulants are still developed and commercialized using compositions developed by hazard, and not by design (as this work proposes).

1. Introduction

Peroxynitrite (PON) is one of the most powerful anionic oxidants, which is associated with diseases such as Alzheimer’s, arthrosis, cancer, etc. and also has a strong influence on plant growth. Selective, rapid, sensitive and direct methods for the detection of peroxynitrite are still scarce. As PON is a Reactive Oxygen Species (ROS), it modulates the growth and development of plants, as it acts as an endo-signaling molecule, especially in abiotic stress situation [1].

2. Materials and Methods

The present work refers to the processes of preparing different peroxynitrite electrosensitive depositions via electro-polymerization and/or drop-casting, using metal phthalocyanines/tetra-amino phthalocyanines (with different transitional metals coordinated to pyrrole groups, metals such as Mn, Co, Zn and Fe, or without metals), as well as methods for selective determination, using these peroxynitrite electrosensitive depositions.

3. Results

The developed selective peroxynitrite determination methods consist of different electrochemical techniques using the following steps: stabilization of the probe at pH 9, inserting the electrodeposited/drop-casted sensors into the analyzed probe (which may also include interfering species in addition to peroxynitrite) and the quantification of peroxynitrite using calibration curves, depending on the nature and concentrations of the peroxynitrite (Figure 1). The electrodes were characterized using Scanning Electron Microscopy (SEM), Raman spectroscopy, X-Ray Fluorescence (XRF), as well as using different electrochemical techniques (such as Cyclic Voltammetry, CV and Chronoamperometry, CA).

4. Conclusions

The presented processes are efficient for peroxynitrite detection and the best ones will be further used for screening biostimulants, as well for comparing the results with those obtained using the confirmation method (bioassay method based on fluorescent dyes) and the validation method (applying the best biostimulants for growing plants).

5. Patents

Ioana Silvia Hosu, Processes for preparing peroxynitrite electrosensitive depositions and methods of selective detection, Patent Application Number A00445/2023 [2].

Author Contributions

Conceptualization, I.S.H.; methodology, I.S.H.; formal analysis, I.S.H.; investigation, I.S.H., A.M.B., R.I.M. and T.F.; writing—original draft preparation, I.S.H.; writing—review and editing, I.S.H., A.M.B., R.I.M. and T.F.; supervision, I.S.H.; project administration, I.S.H. All authors have read and agreed to the published version of the manuscript.

Funding

This work was supported by a grant from the Ministry of Research, Innovation and Digitization, CNCS-UEFISCDI, project number PN-III-P1-1.1-PD-2021-0798, within PNCDI III, contract number PD116/2022.

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

The supporting data are available from the corresponding author.

Conflicts of Interest

The authors declare no conflict of interest.

References

  1. Nephali, L.; Piater, L.A.; Dubery, I.A.; Patterson, V.; Huyser, J.; Burgess, K.; Tugizimana, F. Biostimulants for Plant Growth and Mitigation of Abiotic Stresses: A Metabolomics Perspective. Metabolites 2020, 10, 505. [Google Scholar] [CrossRef] [PubMed]
  2. Hosu, I.S. Processes for preparing peroxynitrite electrosensitive depositions and methods of selective detection. OSIM, A00445/2023, 8 October 2023.
Proceedings 90 00033 g001
Figure 1. Cyclic voltammograms (CV) for the selective method of peroxynitrite (PON) determination, using electro-polymerized cobalt tetra-amino phthalocyanine screen-printed carbon electrodes (polyCoTAPc/SPCE), in the potential window −0.2 to 0.6 V, with a scan rate of 16 mV/s, at different peroxynitrite concentrations: (a) 0 µM, (b) 60 µM, (c) 80 µM, (d) 100 µM, in Phosphate Buffer Saline (PBS) pH 9.
Figure 1. Cyclic voltammograms (CV) for the selective method of peroxynitrite (PON) determination, using electro-polymerized cobalt tetra-amino phthalocyanine screen-printed carbon electrodes (polyCoTAPc/SPCE), in the potential window −0.2 to 0.6 V, with a scan rate of 16 mV/s, at different peroxynitrite concentrations: (a) 0 µM, (b) 60 µM, (c) 80 µM, (d) 100 µM, in Phosphate Buffer Saline (PBS) pH 9.
Proceedings 90 00033 g001
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MDPI and ACS Style

Hosu, I.S.; Baroi, A.M.; Matei, R.I.; Fistos, T. Processes for Preparing Peroxynitrite Electrosensitive Depositions and Methods of Selective Detection for Further Biostimulant Screening. Proceedings 2023, 90, 33. https://doi.org/10.3390/proceedings2023090033

AMA Style

Hosu IS, Baroi AM, Matei RI, Fistos T. Processes for Preparing Peroxynitrite Electrosensitive Depositions and Methods of Selective Detection for Further Biostimulant Screening. Proceedings. 2023; 90(1):33. https://doi.org/10.3390/proceedings2023090033

Chicago/Turabian Style

Hosu, Ioana Silvia, Anda Maria Baroi, Roxana Ioana Matei (Brazdis), and Toma Fistos. 2023. "Processes for Preparing Peroxynitrite Electrosensitive Depositions and Methods of Selective Detection for Further Biostimulant Screening" Proceedings 90, no. 1: 33. https://doi.org/10.3390/proceedings2023090033

APA Style

Hosu, I. S., Baroi, A. M., Matei, R. I., & Fistos, T. (2023). Processes for Preparing Peroxynitrite Electrosensitive Depositions and Methods of Selective Detection for Further Biostimulant Screening. Proceedings, 90(1), 33. https://doi.org/10.3390/proceedings2023090033

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