Isolation, characterization, spectroscopic properties and quantum chemical computations of an important phytoalexin resveratrol as antioxidant component from Vitis labrusca L. and their chemical compositions

Guder A., Korkmaz H., GÖKCE H., ALPASLAN Y. B., ALPASLAN G.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, vol.133, pp.378-395, 2014 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 133
  • Publication Date: 2014
  • Doi Number: 10.1016/j.saa.2014.05.056
  • Journal Name: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.378-395
  • Keywords: trans-Resveratrol, Chromatography, Antioxidant properties, Spectroscopic studies, DFT/B3PW91, GENERALIZED GRADIENT APPROXIMATION, DENSITY-FUNCTIONAL THEORY, VIBRATIONAL SPECTROSCOPY, NBO ANALYSIS, TRANS-RESVERATROL, HOMO-LUMO, DFT, EXTRACTS, EXCHANGE, SPECTRA
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

In this study, isolation and characterization of trans-resveratrol (RES) as an antioxidant compound were carried out from VLE, VLG and VLS. Furthermore, antioxidant activities were evaluated by using six different methods. Finally, total phenolic, flavonoid, ascorbic acid, anthocyanin, lycopene, beta-carotene and vitamin E contents were carried out. In addition, the FT-IR, C-13 and H-1 NMR chemical shifts and UV-vis. spectra of trans-resveratrol were experimentally recorded. Quantum chemical computations such as the molecular geometry, vibrational frequencies, UV-vis. spectroscopic parameters, HOMOs-LUMOs energies, molecular electrostatic potential (MEP), natural bond orbitals (NBO) and nonlinear optics (NLO) properties of title molecule have been calculated by using DFT/B3PW91 method with 6-311++G(d,p) basis set in ground state for the first time. The obtained results show that the calculated spectroscopic data are in a good agreement with experimental data. (C) 2014 Elsevier B.V. All rights reserved.