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Tannin complexation with metal ions and its implication on human health, environment and industry: An overview by Liangliang Zhang; Qinhao Guan; Jianchun Jiang; Mohd Shahnawaz Khan is a Materials Science article available to read on EtoBox.

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Tannins, also known as plant polyphenols (PPs), are secondary metabolites widely existing in higher plants and are a kind of natural renewable resource with wide distribution, variety and quantity. Tannin has become an important class of fine chemicals due to the easily modified molecular structure and the properties of antibacterial and antioxidant, combining with protein and complexing with metal ion. Besides being used for tanning leather, tannins are also widely used in wood adhesive, concrete water-reducing agents, oil drilling fluid viscosity-reducing agents, pharmaceutical, mineral processing, water treatment, gas desulfurization, metal anticorrosion, wood anticorrosion, printing and dyeing, liquor clarification, oil antioxidant, daily chemical products and other products preparation. There are two groups of tannins: condensed tannins (CTs) (flavonoidderived proanthocyanidins) and hydrolysable tannins (HTs) (gallic acid ester-derived). Tannins can form complexes with metals through the ortho-dihydroxyphenolic group(s), especially with transition metals. The structure-activity relationships, stoichiometry, and origin of the insolubility of which were emphasized. Furthermore,

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Author

Liangliang Zhang; Qinhao Guan; Jianchun Jiang; Mohd Shahnawaz Khan

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Materials Science (Physical Sciences)