Impact of Chromolaena odorata Ethanol Extract on Biofilm-Associated Corrosion of Mild steel in Enriched Artificial Seawater Medium

Author(s): Nor Shazwani Mohamad Zaini, Ahmad Hisham Mohd Aris, Mohd Muzamir Mahat and Mohd Fakharul Zaman Raja Yahya*

Abstract: In the present work, the effect of Chromolaena odorata ethanol extract (COEE) on biofilm-associated corrosion of mild steel was investigated. Mild steel coupons were immersed in enriched artificial seawater (EASW) medium inoculated with Pseudomonas aeruginosa for 7 days and 14 days, in the presence and absence of COEE. Three-dimensional surface analysis was carried out using Infinite Focus Microscopy (IFM) whilst phytochemical screening was conducted using gas chromatography-mass spectrometry (GC-MS). Results demonstrated that COEE inhibited pitting corrosion of mild steel in both 7-day and 14-day experiments. It was also found to contain major phytochemicals such as germacrene-D, caryophyllene and cadinene. The present work suggests the potential application of COEE as a biocorrosion inhibitor.

PAGES: 498-504  |  118 VIEWS  234 DOWNLOADS