Azahar, Siti Shafiqah and Raja, Pandian Bothi and Mohamad Ibrahim, Mohamad Nasir and Awang, Khalijah and Zakeyuddin, Mohd Shafiq and Hamidon, Tuan Sherwyn and Hussin, M. Hazwan (2024) Extraction of flavonoids from Butterfly blue pea (Clitoria ternatea) flower as carbon steel corrosion inhibitor in CO2 environment: Experimental and theoretical approaches. Journal of Molecular Liquids, 396. ISSN 0167-7322, DOI https://doi.org/10.1016/j.molliq.2024.124056.
Full text not available from this repository.Abstract
The present study emphasizes the extraction of flavonoids from the Butterfly blue pea (Clitoria ternatea), a flower containing very strong antioxidant properties. The extracts were prepared using solvents with different polarity namely chloroform (CTCH), ethanol (CTET), ethyl acetate (CTEA) and water (CTW). The phytochemical studies for all extracts were evaluated to screen the phenolic content, flavonoid content, reducing power assay and tannin content as potential source of antioxidant properties of the flower. The crude aqueous extract (CTW) had the maximum phenolic content (106.79 ± 4.40 mg/GAE g) and the highest flavonoid content (85.05 ± 5.01 mg QE/g). All of the extracts were then characterized using complementary analyses, including FTIR, TGA, DSC, 1H and 13C NMR. CT extracts showed a substantial amount of phenols and flavonoids in comparison with standard quercetin. The performances of mild steel to prevent corrosion in 3.5 NaCl medium doped with CT extracts (50, 100, 250, 500, 750, 1000 ppm) were ascertained by carrying out electrochemical measurements. It is apparent that CTW is superior in terms of corrosion inhibition of mild steel in NaCl medium under CO2 environment with respect to CTET extract (IECTW = 89.91 > IECTET = 85.53 ). Adsorption of both inhibitors on the surface of MS obeyed Langmuir isotherm. Therefore, it can be inferred from the findings that CT extracts were adsorbed via both physical and chemical adsorption, hence showing excellent corrosion resistance behaviour, thus indicating its potential to be an alternative source of natural antioxidants potent CO2 corrosion inhibitor. © 2024 Elsevier B.V.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Education, Malaysia |
| Uncontrolled Keywords: | Antioxidants; Carbon dioxide; Corrosion inhibitors; Corrosion prevention; Corrosion resistance; Low carbon steel; Organic solvents; Phenols; Sodium chloride; Steel corrosion; Supercritical fluid extraction; Antioxidant properties; Carbon steel corrosion; Clitoria ternatea; Experimental approaches; Flavonoid; Flavonoid content; Kaempferol; Phenolic content; Phytochemical; Quercetin; Flavonoids |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 04 Jul 2024 03:24 |
| Last Modified: | 04 Jul 2024 03:24 |
| URI: | http://eprints.um.edu.my/id/eprint/44818 |
Actions (login required)
 |
View Item |
