Authors : Nwokorie, R.C.; Ogbulie, J.N.; Nweke C.O.; Akujobi, C.O.; Imo, E.O.

Volume/Issue : Volume 10 - 2025, Issue 3 - March

Google Scholar : https://tinyurl.com/3227unu3

Scribd : https://tinyurl.com/ruujszwm

DOI : https://doi.org/10.38124/ijisrt/25mar1938

Google Scholar

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

Note : Google Scholar may take 15 to 20 days to display the article.

Abstract : This study investigated the potential of Capsicum annuum extract as a green biocide and corrosion inhibitor for copper in the presence of Desulfotomaculum sp, a sulfate-reducing bacterium implicated in biocorrosion. The phytochemical analysis of C. annuum revealed that the extract is rich in bioactive compounds, including capsaicinoids, fatty acids, and terpenes. The antimicrobial activity of the extract against Desulfotomaculum sp was evaluated using well-in-agar diffusion assay, which showed significant dose-dependent inhibition zones. The corrosion inhibition properties of the extract were assessed by monitoring the weight loss and corrosion rates of copper coupons coated with the extract in both control media and media containing Desulfotomaculum sp. The results showed that C. annuum extract, effectively reduced the corrosion rates of copper coupons, with the greatest inhibition observed in the control medium. The study proposes a dual mechanism of action, where the antimicrobial compounds in the extract inhibit the growth and metabolic activities of Desulfotomaculum sp, reducing the production of corrosive metabolites, while simultaneously forming a protective film or exhibiting antioxidant properties on the copper surface, directly inhibiting the corrosion process. These findings highlight the promising potential of C. annuum extract as a green, sustainable, and cost-effective solution for biocorrosion control in various industrial sectors.

Keywords : Biocides, Corrosion, Inhibition, Plant Extracts, Metals.

References :

1. Oguzie, E.E., Adindu, C.B., Enenebeaku, C.K., Ogukwe, C.E., Chidiebere, M.A., and Oguzie, K.L. (2012). Natural products for materials protection: Mechanism of corrosion inhibition of mild steel by acid extracts of Piper guineese. J. Phys. Chem, C 2012,116,25,13603-13615
2. Imo, E.O., Ihejirika, C.E., Orji, J.C., Nweke, C.O., Adieze, I.E., (2016). Mechanism of Microbial Corrosion: A Review. Journal of Chemical, Biological and Physical Sciences 6, (4) 1173-1178.
3. Revie, R. W., &Uhlig, H. H. (2008). Corrosion and corrosion control: An introduction to corrosion science and engineering. John Wiley & Sons.
4. Bosch, R. W., Kinsella, B., Nobe, K., &Danneels, C. (2017). Economic impact of corrosion in the United States. NACE International.
5. Beech, I. B., &Sunner, J. (2004). Biocorrosion: Towards understanding interactions between biofilms and metals. Current Opinion in Biotechnology, 15(3), 181-186.
6. Imo, E.O., Ihejirika, C.E., Ndukaku, A.G. and Misoni, P.J. (2023). Effects of Desulfotomaculum sp on corrosion behaviour of mild steel and aluminium in sea water. Zastita Materijala 64 (2), 190-197. 
7. Li, J., Wang, J., Yang, R., Peng, W., Zhang, F., Lin, Z. and Zheng, Y. (2021) Degradation of Corrosion Inhibitors and their Corrosion Inhibition Performance under Harsh Environment in the Oil and Gas Industry: A Review. Journal of Materials Research and Technology, 14, 1898-1927.
8. Enning, D. (2012). Marine sulfate-reducing bacteria cause serious corrosion of iron under electroconductive biogenic mineral crust. Environmental Microbiology, 14(7), 1772-1787.
9. Smith, G. A. (2019). Extracellular polymeric substances govern the surface charge of biogenic elemental selenium nanoparticles. Environmental Science & Technology, 53(18), 10932-10940.
10. Sheng, X., Ting, Y.P and Pehkonen, S.O. (2007). The influence of sulphate reducing bacteria biofilm on the corrosion of stainless steel AISI316. Corrosion Science, 49, 2159-2176.
11. Ghazy E.A, Mahmound, M.G., Asker, M.S., Mahmoud, M.N, Abo, Elsoud, M.M., and Abdel Sami, M.E. (2011). Cultivation and detection of sulphate reducing bacteria (SRB) in sea water. Jo. of American Sciences, 7 (2), 604-608.
12. Dan, C. (2009). Study on the extraction and purification process of Capisicum red pigment. Journal of Agricultural Science. 1 (2), 94-100.
13. Oguzie, E.E., Oguzie, K.L., Akalezi, C.O., Udeze, I.O., Ogbulie, J.N. and Njoku, V.O. (2013).  Natural products for materials protection: Corrosion and Microbial growth inhibition using Capsicum frutescens biomass extraction. Chemical Eng, 1: 214-225. 2013.
14. Tsao, R. and Zhou, T. (2000) Antioxidant activity in vitro of non-provitamin A carotenoids, terpenes, and tocopherols. Journal of Agricultural and Food Chemistry, 48(8), 3146-3150.
15. Reyes-Escogido, M.L., Olivera-Vallejo, E.G., Martínez-Martínez, J.A., Saldívar-Juárez, A., Sánchez-Soto, G.P. and Acosta-García, G. (2021) Capsaicinoids: a comprehensive review on their chemistry, bioactivities, and applications. Critical Reviews in Food Science and Nutrition, 1-27.
16. Rivas, F.J., Rahman, R., Mir-Tutusaus, J.A., Cantos-Salgado, M., Albors-Vanier, A., Sarrión-Navarro, A., Rodrigo, D. and Martínez, A. (2022) Inhibition of bacterial growth by Capsicum annum L. derivatives. Foods, 11(6), 864.
17. Gao, X., Zhi, Y., Zhang, T., Xing, H., Sun, X., Kang, C. and Hu, Z. (2019) Antioxidant properties and potential bioactivity of dietary alkylphenols in Chili Peppers. Journal of Agricultural and Food Chemistry, 67(31), 8608-8618.
18. Oparaodu, K.O. & Okpakwasili, GC. (2014), Comparison of percentage weight loss and corrosion rate trends in different metal coupons from two soil environments, International Journal of Environmental Bioremediation and Biodegradation, 2(5): 243-249.
19. Chouhan, S., Sharma, K. and Guleria, S. (2017) Antimicrobial activity of some essential oils—present status and future perspectives. Medicines, 4(3), 58.
20. Kuever, J. (2014) The family Desulfotomaculaceae. In: Rosenberg, E., DeLong, E.F., Lory, S., Stackebrandt, E. and Thompson, F. (eds.) The Prokaryotes: Firmicutes and Tenericutes. Berlin, Heidelberg: Springer, 59-73.
21. Enning, D. and Garrelfs, J. (2014) Corrosion of iron by sulfate-reducing bacteria: new views of an old problem. Applied and Environmental Microbiology, 80(4), pp.1226-1236.
22. Baţă, D., Bărăscu, N., Iacob, E., Sandu, A.V., Duţă, A. and Dimulescu, V.G (2021) The corrosion process induced by sulfate-reducing bacteria. A bibliographic review. Revista de Chimie, 72(5), 177-192.
23. Stackebrandt, E., Chudoba, J., Liesack, W. and Schildknecht, P. (2015) Biocorrosion through Desulfotomaculum and Desulfovibrio strains. In: Liengen, T., Basseguy, R., Feron, D. and Whites, C. (eds.) Understanding Biocorrosion. Oxford: Woodhead Publishing, pp. 65-85.
24. Usher, K.M., Kaksonen, A.H., Cole, I. and Marney, D. (2007) Biogeochemical hazards of stored tailings materials: Case study review. Mineral Processing and Extractive Metallurgy Review, 28(2), 142-170.  
25. Kuang, F., Lu, M. and Yang, H. (2016) Microbial bio-corrosion by sulfate reducing bacteria in SRB-XOM bioreactor system under mechanical removal conditions. Engineering Failure Analysis, 68,40-49.
26. Jaramillo, A.F., Mohanty, A., Stenson, J.R. and Cantú-Pernía, V. (2020) Corrosion behaviour of copper materials for subsea applications in seawater and bacterial solutions. Journal of Bio-and Tribo-Corrosion, 6(1),1-25.
27. Koffi-Nevry, R., Kouassi, K.C., Nanga, Z.Y., Koussémon, M. and Loukou, G.Y. (2012) Antibacterial activity of two bell pepper extracts: Capsicum annuum L. and Capsicum frutescens. Food and Nutrition Sciences, 3(11),1560-1567.
28. Loto, R.T., Ajaere, A.A., Olanijo, F.T., Omeike, S.O. and Alaneme, K.K. (2022) Experimental evaluation of capsaicin as a green inhibitor on mild steel corrosion in simulated oilfield environment. Environmental Challenges, 7, 100472.
29. Enning, D. and Garrelfs, J. (2014) Corrosion of iron by sulfate-reducing bacteria: new views of an old problem. Applied and Environmental Microbiology, 80(4), 1226-1236.
30. Loto, R.T., Ajaere, A.A., Olanijo, F.T., Omeike, S.O. and Alaneme, K.K. (2022) Experimental evaluation of capsaicin as a green inhibitor on mild steel corrosion in simulated oilfield environment. Environmental Challenges, 7, 100472.