An anticorrosive study on potential bioactive compound produced by Pseudomonas aeruginosa TBH2 against the biocorrosive bacterial biofilm on copper metal

Narenkumar, Jayaraman; Sathishkumar, Kuppusamy; Sarankumar, Raja Kumaresan; Murugan, Kadarkarai; Rajasekar, Aruliah

doi:10.1016/j.molliq.2017.08.075

Cited by 29 publications

(13 citation statements)

References 22 publications

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“…The UPLC chromatogram showed a single peak with a retention time of 1.45 min for PYO standard, which was comparable to that of the extracted sample, which suggested that it was the same molecule. On the other hand, the maximum at 278 nm of PYO was also reported for a culture of P. aeruginosa TBH2, an extracted sample obtained with chloroform and acidified with 1M HCl, and in the same way for PYO extracted from cultures of P. aeruginosa N11, P. aeruginosa D23 and a P. aeruginosa clinical isolate [ 3 , 44 ]. Figure S2 (Supplementary Material) displays the mass spectra of extract sample and standard PYO, giving a result of m / z 211 (M + H), which coincides with PYO mass of 210 g mol −1 .…”

Section: Resultssupporting

confidence: 53%

“…The genus Pseudomonas , Gram-negative aerobic Gammaproteobacteria belonging to the family Pseudomonadaceae, is known to produce a series of extracellular redox metabolites of the phenazine group. Species of the genus Pseudomonas are characterized by their metabolic versatility, giving them great relevance in environmental recycling processes, degrading a wide range of simple and complex organic compounds [ 2 , 3 , 4 ]. It has been demonstrated that Pseudomonas aeruginosa produces 5-methylphenazine-1-one or pyocyanin (PYO), a water-soluble blue-green pigment with a redox potential similar to menaquinone [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

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Optimized Production of a Redox Metabolite (pyocyanin) by Pseudomonas aeruginosa NEJ01R Using a Maize By-Product

et al. 2020

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Pseudomonas aeruginosa metabolizes pyocyanin, a redox molecule related to diverse biological activities. Culture conditions for the production of pyocyanin in a defined medium were optimized using a statistical design and response surface methodology. The obtained conditions were replicated using as substrate an alkaline residual liquid of cooked maize and its by-products. The untreated effluent (raw nejayote, RN) was processed to obtain a fraction without insoluble solids (clarified fraction, CL), then separated by a 30 kDa membrane where two fractions, namely, retentate (RE) and filtered (FI), were obtained. Optimal conditions in the defined medium were 29.6 °C, 223.7 rpm and pH = 6.92, which produced 2.21 μg mL−1 of pyocyanin, and by using the wastewater, it was possible to obtain 3.25 μg mL−1 of pyocyanin in the retentate fraction at 40 h. The retentate fraction presented the highest concentration of total solids related to the maximum concentration of pyocyanin (PYO) obtained. The pyocyanin redox behavior was analyzed using electrochemical techniques. In this way, valorization of lime-cooked maize wastewater (nejayote) used as a substrate was demonstrated in the production of a value-added compound, such as pyocyanin, a redox metabolite of Pseudomonas aeruginosa NEJ01R.

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Section: Resultssupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Optimized Production of a Redox Metabolite (pyocyanin) by Pseudomonas aeruginosa NEJ01R Using a Maize By-Product

et al. 2020

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“…Azoles derivatives can be applied for a wide range of steels [12][13][14] in acidic or alkaline solutions along with chloride ions. Among the group of azole derivatives, Tolyltriazole (TTA, C 7 H 7 N 3 , with a chemical structure given in Figure 1 5 ) is the most widely used corrosion inhibitor for copper and copper alloys, in cooling water systems, because of its low cost and high performance in corrosion inhibition 5,7,[15][16][17][18][19][20][21][22] .…”

Section: Introductionmentioning

confidence: 99%

Corrosion Inhibition of Mild Steel with Tolyltriazole

2021

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Tolyltriazole (TTA) is a well-defined corrosion inhibitor for copper and copper alloys. However, there is little literature about its corrosion inhibition performance for mild steels in corrosive environments. This paper studied the electrochemical behavior of TTA in 0.5 M HCl solutions. Also, the morphology and nature of TTA layers on the steel surface were investigated. Electrochemical results showed that TTA is an excellent corrosion inhibitor for mild steel in acidic media with an efficiency of 91% for 0.07 M concentration. The results also indicated that TTA is a mixed-type inhibitor. XRD analysis revealed that the inhibition mechanism of TTA is based on the formation of an organic film due to the physically adsorbed molecules of TTA. AFM and EDS results showed that the formed layers decrease the adsorptivity of corrosive elements (Cl -) on the steel surface. Density Functional Theory (DFT) study confirmed the experimental results.

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“…The biocide or corrosion inhibitor into the cooling water as a mean to control the biofouling problem; we are therefore concerned on the inhibition efficiency of the currently adopted inhibition material particularly to the biocorrosion on copper. Although it is a common practice to add the biocide or inhibitor at every other time interval, the extent of inhibition and interference between the two materials were not known ( Narenkumar et al, 2017a , Narenkumar et al, 2017b ). It is thus important for us to study on the degree of efficiency by the biocide and inhibitor in controlling and preventing the biocorrosion issue.…”

Section: Introductionmentioning

confidence: 99%

Biofilm formation on copper and its control by inhibitor/biocide in cooling water environment

Narenkumar

Devanesan

AlSalhi

et al. 2021

Saudi Journal of Biological Sciences

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The present study has successfully identified the nitrate reducing bacteria present in the cooling water system and also investigated the performance of industrially applied biocide and inhibitor on the bacterial inhibition. In order to carry out the objective of this study, facilities and methods such as 16S rRNA gene sequencing, Lowry assay, SEM, EIS, ICP-MS and weight loss analysis were being utilized. In this study, two out of the five morphologically dis- similar colonies identified through 16S rRNA gene sequencing, namely the Massilia timonae and the Pseudomonas , were being utilized in the biocorrosion study on copper metal. From the surface analysis using SEM demonstrated the phenomenon of biofilm formation on the copper surface. 2-methylbenzimidazole has the addition of methyl group in the diazole ring position of benzimidazole it has create basicity environment and inhibit the metal deterioration. Meanwhile, it is also deducible from the EIS and protein analysis that com- bination of biocide with either of the inhibitors gives rise to better biocorrosion suppression (0.00178 mpy and 0.00171mpy) as compared to the sole effect of either biocide or inhibitor (0.00219 mpy, 0.00162 and 0.00143). Biocorrosion system biocide with MBM was found to exhibit 65% corrosion inhibition efficiency. Moreover, adoption of 2-Methylbenzimidazole seems to display better performance as compared to Multionic 8151, which is adopted in cooling water system.

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An anticorrosive study on potential bioactive compound produced by Pseudomonas aeruginosa TBH2 against the biocorrosive bacterial biofilm on copper metal

Cited by 29 publications

References 22 publications

Optimized Production of a Redox Metabolite (pyocyanin) by Pseudomonas aeruginosa NEJ01R Using a Maize By-Product

Optimized Production of a Redox Metabolite (pyocyanin) by Pseudomonas aeruginosa NEJ01R Using a Maize By-Product

Corrosion Inhibition of Mild Steel with Tolyltriazole

Biofilm formation on copper and its control by inhibitor/biocide in cooling water environment

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