Effect of polar and non-polar carotenoids on Xanthophylomyces dendrorhous membranes by EPR

A. Blasko, J. Belagyi, T. Dergez, J. Deli, G. Papp, T. Papp, Cs Vagvolgyi, M. Pesti

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The red yeast Xanthophyllomyces dendrorhous is one of the microbiological production systems for natural carotenoids. High-performance liquid chromatography (HPLC) and electron paramagnetic resonance spectroscopy (EPR) experiments were performed on X. dendrorhous membranes in order to study the effect of incorporation rates of different type of carotenoids. In the case of fluid-phase membranes, it was found that polar carotenoids, such as astaxanthin and cis-astaxanthin, increased the EPR order parameter and decreased the motional freedom and phase-transition temperature. In contrast the non-polar carotenoids β-cryptoxanthin and β-carotene decreased the EPR order parameter and increased motional freedom and phase-transition temperature. A noteworthy coherence was observed between the polarities of the strains and the phase-transition temperatures.

Original languageEnglish
Pages (from-to)1097-1104
Number of pages8
JournalEuropean Biophysics Journal
Volume37
Issue number7
DOIs
Publication statusPublished - Sep 1 2008

Keywords

  • Astaxanthin
  • Carotenoids
  • Phase-transition temperature
  • Plasma membrane
  • Spin label
  • β-Carotene

ASJC Scopus subject areas

  • Biophysics

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