Antioxidant Capacity and Corrosion Inhibition Efficiency of Sambucus nigra L. Extract
The cyclic voltammogram recorded in the potential range between 0 V and 800 mV with scan rate of 100 mV s−1 was used to determine the measure of antioxidants content (antioxidant capacity) present in Sambucus nigra L. extract. The antioxidant capacity of the extract was 4.06 mg GAE g −1 fw (mg of ga...
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| Format: | Article |
| Language: | English |
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Croatian Society of Chemical Engineers
2023-07-01
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| Series: | Chemical and Biochemical Engineering Quarterly |
| Subjects: | |
| Online Access: | http://silverstripe.fkit.hr/cabeq/assets/Uploads/03-2-2023.pdf |
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| author | I. Martinović G. Zlatić Z. Pilić M. Šušak F. Falak |
| author_facet | I. Martinović G. Zlatić Z. Pilić M. Šušak F. Falak |
| author_sort | I. Martinović |
| collection | DOAJ |
| description | The cyclic voltammogram recorded in the potential range between 0 V and 800 mV with scan rate of 100 mV s−1 was used to determine the measure of antioxidants content (antioxidant capacity) present in Sambucus nigra L. extract. The antioxidant capacity of the extract was 4.06 mg GAE g −1 fw (mg of gallic acid equivalents per gram of fresh weight of the extract). The corrosion inhibition efficiency of Sambucus nigra L. extract on aluminium, copper, and bronze in 3 % NaCl solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy. Polarization data showed that extract acted as a mixed-type inhibitor, that the corrosion inhibition process was spontaneous physical adsorption (ΔG ≈ –16 kJ mol–1) of the extract molecules on metals surfaces and followed Freundlich isotherm. Impedance spectroscopy studies revealed that increasing the concentration of extract reduced the double-layer capacitance and increased the charge transfer resistance. The highest inhibition efficiencies (Cu: ~ 57 %, CuSn14: ~74 % and Al: ~58 %) were achieved for an extract concentration of 1.0 g L–1. |
| first_indexed | 2024-03-12T23:43:16Z |
| format | Article |
| id | doaj.art-22862c4265184db69f20c0e930ad9518 |
| institution | Directory Open Access Journal |
| issn | 0352-9568 1846-5153 |
| language | English |
| last_indexed | 2024-03-12T23:43:16Z |
| publishDate | 2023-07-01 |
| publisher | Croatian Society of Chemical Engineers |
| record_format | Article |
| series | Chemical and Biochemical Engineering Quarterly |
| spelling | doaj.art-22862c4265184db69f20c0e930ad95182023-07-14T13:40:07ZengCroatian Society of Chemical EngineersChemical and Biochemical Engineering Quarterly0352-95681846-51532023-07-01372798710.15255/CABEQ.2023.2180Antioxidant Capacity and Corrosion Inhibition Efficiency of Sambucus nigra L. ExtractI. Martinović0G. Zlatić1Z. Pilić2M. Šušak3F. Falak4Department of Chemistry, Faculty of Science and Education, University of Mostar, Matice Hrvatske bb, Mostar, Bosnia and HerzegovinDepartment of Chemistry, Faculty of Science and Education, University of Mostar, Matice Hrvatske bb, Mostar, Bosnia and HerzegovinDepartment of Chemistry, Faculty of Science and Education, University of Mostar, Matice Hrvatske bb, Mostar, Bosnia and HerzegovinDepartment of Chemistry, Faculty of Science and Education, University of Mostar, Matice Hrvatske bb, Mostar, Bosnia and HerzegovinDepartment of Chemistry, Faculty of Science and Education, University of Mostar, Matice Hrvatske bb, Mostar, Bosnia and HerzegovinThe cyclic voltammogram recorded in the potential range between 0 V and 800 mV with scan rate of 100 mV s−1 was used to determine the measure of antioxidants content (antioxidant capacity) present in Sambucus nigra L. extract. The antioxidant capacity of the extract was 4.06 mg GAE g −1 fw (mg of gallic acid equivalents per gram of fresh weight of the extract). The corrosion inhibition efficiency of Sambucus nigra L. extract on aluminium, copper, and bronze in 3 % NaCl solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy. Polarization data showed that extract acted as a mixed-type inhibitor, that the corrosion inhibition process was spontaneous physical adsorption (ΔG ≈ –16 kJ mol–1) of the extract molecules on metals surfaces and followed Freundlich isotherm. Impedance spectroscopy studies revealed that increasing the concentration of extract reduced the double-layer capacitance and increased the charge transfer resistance. The highest inhibition efficiencies (Cu: ~ 57 %, CuSn14: ~74 % and Al: ~58 %) were achieved for an extract concentration of 1.0 g L–1.http://silverstripe.fkit.hr/cabeq/assets/Uploads/03-2-2023.pdfantioxidant capacitycorrosioninhibitionsambucus nigra l. extract |
| spellingShingle | I. Martinović G. Zlatić Z. Pilić M. Šušak F. Falak Antioxidant Capacity and Corrosion Inhibition Efficiency of Sambucus nigra L. Extract Chemical and Biochemical Engineering Quarterly antioxidant capacity corrosion inhibition sambucus nigra l. extract |
| title | Antioxidant Capacity and Corrosion Inhibition Efficiency of Sambucus nigra L. Extract |
| title_full | Antioxidant Capacity and Corrosion Inhibition Efficiency of Sambucus nigra L. Extract |
| title_fullStr | Antioxidant Capacity and Corrosion Inhibition Efficiency of Sambucus nigra L. Extract |
| title_full_unstemmed | Antioxidant Capacity and Corrosion Inhibition Efficiency of Sambucus nigra L. Extract |
| title_short | Antioxidant Capacity and Corrosion Inhibition Efficiency of Sambucus nigra L. Extract |
| title_sort | antioxidant capacity and corrosion inhibition efficiency of sambucus nigra l extract |
| topic | antioxidant capacity corrosion inhibition sambucus nigra l. extract |
| url | http://silverstripe.fkit.hr/cabeq/assets/Uploads/03-2-2023.pdf |
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