Low-energy electron beam deposition of coatings based on tannin and corn starch, their structure and properties

• Published in: Applied surface science Vol. 642; p. 158540
• Main Authors: Liu, Yiming, Wang, Ao, Tan, Xiaoxue, Rogachev, A.V., Rogachev, A.A., Kontsevaya, I.I., Pyzh, A.E., Jiang, Xiaohong, Yarmolenko, V.A., Rudenkov, A.S., Yarmolenko, M.A., Gorbachev, D.L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-01-2024
• Subjects: Antibacterial; Antifungal properties; Antiradical; Corn starch; Electron-beam deposition; Tannin; Electron-beam deposition; Tannin; Antibacterial; Antiradical; Antifungal properties; Corn starch
• ISSN: 0169-4332
• DOI: 10.1016/j.apsusc.2023.158540

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•Electron-beam formation of tannin-base coatings in vacuum.•Coatings with high antiradical, antifungal and antibacterial activity.•Coatings can be used for treating oral lesions (mucositis).•The calcium phosphate prevent thermal degradation of tannin and starch fragments.•Coating tannin + corn starch does not crack in the aqueous environment.
This paper, for the first time, presents the formation of composite coatings based on tannin, corn starch, and calcium dihydrophosphate by a low-energy electron beam in vacuum. Molecular structure, antiradical, antifungal and antibacterial properties of such coatings have been studied. Two-layer coatings (tannin + corn starch (1:1)) + Ca(H2PO4)2·H2O layer can be used for prolonged release of tannin into aqueous media. The bactericidal activity of the two-layer composite coating against S. aureus and S. viridans in most cases were found to be significantly higher than the bactericidal activity of the tannin coating. Two-layer composite coatings have pronounced fungicidal activity against C. albicans and can be used for treating oral lesions (mucositis).