Complexation of caffeic and ferulic acids by transition-metal ions

Authors
Khvan, AM Kristallovich, EL Abduazimov, KA
Citation
Am. Khvan et al., Complexation of caffeic and ferulic acids by transition-metal ions, CHEM NAT CO, 37(1), 2001, pp. 72-75
Citations number
18
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
CHEMISTRY OF NATURAL COMPOUNDS
ISSN journal
00093130 → ACNP
Volume
37
Issue
1
Year of publication
2001
Pages
72 - 75
Database
ISI
SICI code
0009-3130(200101/02)37:1<72:COCAFA>2.0.ZU;2-9
Abstract
Potentiometric titration and IR and UV spectroscopies are used to study com plexation of caffeic and ferulic acids by metal ions. Caffeic and ferulic a cids, which occur in lignin, are shown to react with metal ions mainly thro ugh an ionic mechanism. However, coordination bonding is also possible depe nding oil the nature of the ligand and metal ion and the ratio of starting components. The strongest complex forms between caffeic acid and CuCl2 (2:1 ratio).