HPLC-DAD identification of compounds in corrosion inhibitor Salix alba bark extract and the hydrolate
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Date
2025
Authors
Zdravković, Milica
Savić Jovanović, Slađana
Grekulović, Vesna
Stanković, Dalibor
Journal Title
Journal ISSN
Volume Title
Publisher
University of Belgrade - Technical Faculty in Bor
Source
Proceedings [Elektronski izvor] - 56th International October Conference on Mining and Metallurgy - IOC 2025, 22-25 October, 2025, Bor Lake, Serbia
Volume
Issue
Abstract
The compounds present in Salix alba bark (SAB) extract and its hydrolate were identified using highperformance liquid chromatography with diode array detection (HPLC-DAD). SAB extract and its hydrolate were obtained by evaporating a macerate of dried, ground white willow bark and hot distilled water. A total of 19 standard polyphenolic compounds were used for the HPLC analysis. Results indicate that only 4-hydroxybenzoic acid (4-HBA) was detected in the SAB hydrolate. In contrast, both gallic acid and caffeic acid were present in the SAB extract. The presence of 4-HBA indicates the potential possibility of using SAB hydrolate as a starting component for the synthesis of parabens and other 4-HBA derivatives. Additionally, the identification of gallic and caffeic acids in the SAB extract further confirms the effect as a cathodic inhibitor of copper corrosion in chloride environments, because both acids are proven cathodic inhibitors of copper in different corrosion environments.
Description
Keywords
white willow bark, HPLC, caffeic acid, gallic acid, 4-hydroxybenzoic acid
Citation
DOI
10.5937/IOC25588Z
Scopus
ISSN
ISBN
978-86-6305-164-5
License
CC-BY-NC-ND