Effect of Metal Ions on the Interaction of Condensed Tannins with Protein.

ABSTRACT: A quantitative analysis of the precipitate effects of metal ions (Al³⁺, Fe²⁺, Cu²⁺, Zn²⁺) by bovine serum albumin (BSA) on two condensed tannins (CT) from sorghum and plum was presented in this study. The results showed that adding metal ions enhanced the precipitation of proteins by CT, depending on the type and concentration of the metal ions used in the reaction system. The presence of metal ions and precipitation results on the CT-protein complex showed that Al³⁺ and Fe²⁺ had a higher binding ability with CT and a weaker influence on the precipitation of the CT-protein complex than Cu²⁺ and Zn²⁺. However, when the initial reaction solution contained excessive amounts of BSA, the extra addition of me

SUBMITTER: Zhang L 

PROVIDER: S-EPMC9957110 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature