Potentiometric and 1H NMR studies of complexation of Al3+ with (−)-epigallocatechin gallate, a major active constituent of green tea

NMR Spectra and Potentiometry Studies of Aluminum(III) Binding with Coenzyme NAD+ in Acidic Aqueous Solutions

“…The pH values in D2O solutions were corrected for the deuterium isotope effect by adding 0.45 to the meter reading. 15 …”

Potentiometric and Multi-NMR Studies of Aluminum(III) Complex with l-Glutamate in Acidic Aqueous Solutions

“…The pH values in D2O solutions were corrected for the deuterium isotope effect by adding 0.45 to the meter reading. 9 …”

“…Meanwhile, aconitase and glutamate dehydrogenase (GDH) exhibit decreased activity in the presence of this metal ion. 8,9 Especially in the transamination process, the inhibition by Al may influence other fundamental process, which can influence the amino acid synthesis, and contribute to Al toxicity in higher plants. 10 The inhibitory effect of Al ion can decrease the GDH activity.…”

Effect of (−)-epigallocatechin gallate on electrochemical behavior and surface film composition of Co-Cr alloy used in dental restorations

“…XPS results also revealed that the composition of the outmost surface layer included EGCG-Cr (III) ion complex. The complexing behaviour of EGCG with metal ions such as Al 3+ and Mn 2+ has been previously reported [40][41][42] . Signifi cant differences exist between the complex formation properties of EGCG and other polyphenols lacking the gallate ring (D-ring).…”

“…Signifi cant differences exist between the complex formation properties of EGCG and other polyphenols lacking the gallate ring (D-ring). Major coordinate bonds in EGCG metal complexes are formed by the gallate ring, while the gallocatechin ring (B-ring) has a secondary coordination effect [40][41][42] . In the present study, it seemed probable that the central -OH group of B-ring was deprotonated and coordinated to Cr 3+ ion.…”