20.500.12556/DKUM-96768 Polyphenols from Sage Leaves (Salvia officinalis L.) environmentally friendly extraction under high hydrostatic pressure and application as a corrosion inhibitor for tinplate Due to the diversity of organic molecular structures present in sage extract, sage extract is a promising potential source of a cheap and effective biodegradable green corrosion inhibitor for tinplate in 3% NaCl solution, which was evaluated in this study. HHP proved to be a new and emerging technology for the useful extraction of polyphenols from sage as a functional ingredient from natural sources. Analysis of variance among all tested independent factors (ethanol concentration, HHP parameters and temperature) revealed significant differences (p < 0.05) in total polyphenol content as well as for rosmarinic acid as the major phenolic compound in sage extract, while extraction time had no effect (p ˃ 0.05). The optimum HHP conditions (600 MPa, 30% ethanol, 60 °C and 5 min) gave a maximum extraction yield of total polyphenols of 3811.84 mg/100 g. Sage-leaf extracts were found to be a mixture of phenolic acids, namely rosmarinic and salvianolic acid K, epicatechin and luteolin-7-O-glucuronide glycoside. The corrosion results show that the sage extract at a concentration of 0.6 g/L in 3% NaCl is an effective corrosion inhibitor (93%), forming a passivation layer of sage extract consisting of organic compounds such as polyphenols on the surface of tinplate. high hydrostatic pressure extraction corrosion inhibitor sage rosmarinic acid polyphenols inhibitorji korozije rožmarinska kislina žajbelj polifenoli true false true MDPI Angleški jezik Slovenski jezik https://www.mdpi.com/journal/separations © 2024 by the authors Članek v reviji 2026-01-28 08:13:48 2026-01-28 08:13:48 2026-01-29 03:11:46 0000-00-00 00:00:00 2024 0 0 19 str. iss. 5, [article no.] 158 Vol. 11 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-03-22 2024-05-14 2024-05-17 620.1/.2 196201475 10.3390/separations11050158 2297-8739 separations-11-00158-v2.pdf separations-11-00158-v2.pdf 1 A7D77A569E2D7A0FF30236127ED4DD77 96884449d463ee65e6ce2144d6929ee1163726f7a2d282a7be543737335aab30 92ed67f3-fc19-11f0-9a72-00155d00018d https://dk.um.si/Dokument.php?lang=slv&id=202663 https://www.mdpi.com/2297-8739/11/5/158 0 9d8ac629-fc19-11f0-9a72-00155d00018d https://dk.um.si/Dokument.php?lang=slv&id=202664 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0