Physicochemical properties and antioxidant activities of luteolin-phospholipid complex

Molecules. 2009 Sep 9;14(9):3486-93. doi: 10.3390/molecules14093486.

Abstract

A luteolin and phospholipid complex was prepared to improve the lipophilic properties of luteolin. The physicochemical properties of the complex were analyzed by ultraviolet-visible spectrometry (UV), infrared spectrometry (IR), X-ray diffractometry (XRD) and differential scanning calorimetry (DSC). The results showed that luteolin and phospholipid in the complex were joined by non-covalent-bonds and did not form a new compound. It was found that the complex was an effective scavenger of DPPH radicals, with an IC(50) value of 28.33 microg/mL. In the Rancimat antioxidant test using lard oil as substrate, the complex also showed the strong antioxidant activity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antioxidants / pharmacology*
  • Biphenyl Compounds / metabolism
  • Calorimetry, Differential Scanning
  • Free Radical Scavengers / pharmacology
  • Luteolin / chemistry*
  • Luteolin / pharmacology*
  • Phospholipids / chemistry*
  • Phospholipids / pharmacology*
  • Picrates / metabolism
  • Spectrophotometry, Infrared
  • Spectrophotometry, Ultraviolet
  • X-Ray Diffraction

Substances

  • Antioxidants
  • Biphenyl Compounds
  • Free Radical Scavengers
  • Phospholipids
  • Picrates
  • 1,1-diphenyl-2-picrylhydrazyl
  • Luteolin