Experimental and Theoretical Investigations of Argania spinosa’s Extracts on the Antioxidant Activity and Mild Steel Corrosion’s Inhibition in 1 M HCl

Abstract

The aim of the present research is the evaluation of the extraction process effect on the chemical composition, the antioxidant activities, and the mild steel corrosion inhibition ability of Argania spinosa’s extracts (alimentary oil (AO) and hexanic extract of roasted almonds (HERA)). The chemical composition revealed that both extracts have the same major compounds: Palmitic, linoleic, and stearic acids, with their order slightly different. Electrochemical impedance spectroscopy (EIS), weight loss measurements, and polarization curves were used to estimate AO and HERA’s mild steel corrosion’s inhibition capacity. Based on these three methods, AO registered, respectively, 81%, 87%, and 87% inhibition efficiency while HERA registered 78%, 84%, and 82% inhibition efficiency. The antioxidant activity of AO and HERA was examined in parallel with standard antioxidants (gallic acid and quercetin) using two assays: DPPH* scavenging assay and ferric reducing antioxidant power assay (FRAP). AO had less EC50 in both techniques (DPPH*: 3559.08 ± 161.75 μg/mL; FRAP 1288.58 ± 169.21 μg/mL) than HERA (DPPH*: 3621.43 ± 316.05 μg/mL; FRAP 1655.86 ± 240.18 μg/mL). Quantum chemical and molecular dynamic studies were employed to suggest the adsorption mechanism.

An examination of the effectiveness of the expired drug isoprinosine in preventing aluminum corrosion in alkaline solutions using both computational and experimental techniques

“…The phrase ( μ ) “electron donating potency” refers to how many electrons the inhibitor is capable of transferring from itself as a donor to the metal as an acceptor molecule. 71 isoprinosine's inhibitory activity increases with its ability to contribute more electrons. Therefore, higher electron donating potencies are ordered as inosine, dimethylaminopropanol, and acedoben.…”

Analyzing the Bioactive Properties and Volatile Profiles Characteristics of Opuntia dillenii (Ker Gawl.) Haw: Exploring its Potential for Pharmacological Applications

“…The separation was carried out at a constant temperature of 40 °C. At 254, 280, 320, 350, and 540, spectrophotometric detection was done, as described in our works [37,38] …”

“…At 254, 280, 320, 350, and 540, spectrophotometric detection was done, as described in our works. [37,38] Antioxidant activity…”

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