Please use this identifier to cite or link to this item: https://scidar.kg.ac.rs/handle/123456789/9537
Title: HPLC, UV-vis and NMR spectroscopic and DFT characterization of purpurin isolated from Rubia tinctorum L.
Authors: Marković, Zoran
Manojlovic, Nedeljko
Jeremić N.
Zivić M.
Issue Date: 2013
Abstract: Purpurin (1,2,4-trihidroxyanthraquinone), a naturally occuring anthraquinone pigment present in the root of Rubia tinctorum (Mull. Arg.) Zahlbr. was isolated from the plant, purified and characterized by HPLC chromatography, UV-vis and NMR spectroscopy. The geometries of the purpurin conformers were optimized using the B3LYP/6-311+G(d,p) level of theory. It was found that all conformations have similar energies and that the corresponding purpurin radicals are planar. In spite of their planarity, there is no significant electron delocalization over the A and C rings. The antioxidant properties of purpurin were investigated using the colorimetric assay as Trolox-equivalent antioxidant capacity, and theoretical BDE (Bond Dissociation Enthalpy). Both methods revealed that purpurin has strong antioxidant capacity.
URI: https://scidar.kg.ac.rs/handle/123456789/9537
Type: article
DOI: 10.2298/HEMIND120419058M
ISSN: 0367-598X
SCOPUS: 2-s2.0-84962429234
Appears in Collections:Faculty of Medical Sciences, Kragujevac
Institute for Information Technologies, Kragujevac

Page views(s)

729

Downloads(s)

30

Files in This Item:
File Description SizeFormat 
10.2298-HEMIND120419058M.pdf2.05 MBAdobe PDFThumbnail
View/Open


This item is licensed under a Creative Commons License Creative Commons