مساهمة في الدراسة الفيتوكيميائية وتقييم الفعالية البيولوجية والفعالية المضادة للتآكل لمستخلصات نباتbatt. & Trab Senecio Hoggariensis

Résumé: This work aims to contribute to the phytochemical study and the evaluation of the biological and anti-corrosion activity of carbon steel (X70) of S. hoggariensis extracts. Phytochemical screening has shown that the plant contains all the active ingredients studied, and taking into account the properties and the importance of phenolic compounds we decided to study them chemically; these compounds were extracted from the aerial part of the plant by application of the extraction method (Ethanol / Water (70/30)). The extracts obtained were subjected to a biological study, a chromatographic analysis (GC/MS) was applied to the dichloromethane extract. Within the limits of the experimental conditions applied, by interpreting the mass spectra obtained and identifying them by the procedure of comparison with mass spectra for the reference compounds, we have proposed ten formulas for different chemical compounds, in particular: ketones, alcohols, esters, ethers and carboxylic acids. From the results of the antioxidant activity tests of plant extracts, we concluded that the greatest amount of phenolic compounds and flavonoids was recorded in the ethyl acetate extract, because all the extracts showed a powerful antioxidant activity, but with variable values from one extract to another for each test. The antibacterial activity was studied by diffusion in the solid medium against five Gram positive and negative bacteria. All the extracts studied have shown an inhibitory efficacy for the growth of certain bacterial species with the exception of the aqueous phase. For studying the corrosion inhibiting capacity in three ways, represented by mass loss and electrochemical measurements (polarization curves and impedance spectroscopy), it was concluded that the acid extract of the plant is a good inhibitor of corrosion of steel (X70) in HCl medium (1M).

Publié dans la revue: