National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
This work investigated the inhibition effect of ethanol extract of Ganoderma tropicum on biocorrosion of carbon steel induced by a consortium of sulphate reducing bacteria (SRB). The SRB consortium used in this study included three Desulfovibrio sp. isolated from injection and produced water from Bonga oilfield in Nigeria. Isolation and gravimetric experiment were carried out in a Coy anaerobic chamber. Phytochemical screening of G. tropicum ethanol extract (GTEE) showed presence of alkaloid, glycosides, phenolic compounds, tannins, triterpenoids and steroids. Antimicrobial assay result revealed that GTEE was effective against SRB at 0.71 mg/ml. GTEE+D-tyrosine treatment gave up to 5-log reduction in SRB population. The inhibition efficiency of the extract was 45.03 %I at sub-MIC, 59.12%I at MIC, 63.81 at supra-MIC and 83.93 when potentiated with D-tyrosine for the 14-days test. The inhibition efficiency for the 28-days test was 43.19 %I at sub-MIC, 58.17%I at MIC, 62.38 at supra-MIC and 72.09 when potentiated with D-tyrosine. The application of GREE in controlling SRB growth and activities can benefit the oil and gas industry as a green biocide and corrosion inhibitor.
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