Effects of fusarium infection on the phenolics in emmer and naked barley

J Agric Food Chem. 2010 Mar 10;58(5):3043-9. doi: 10.1021/jf903545j.

Abstract

Inoculated or non-inoculated naked barley and emmer cultivars were investigated with regard to their influence on phenolic acid profiles and their arabinoxylan content. Two groups of phenolic compounds were differentiated-methanol-soluble and hydrolyzable covalent-bound phenolic compounds. Chromatographic methods were applied for their analysis. The results showed ferulic acid as the predominant phenol in both total and covalent-bound fractions. The inoculation significantly reduced the ferulic acid content within a range of 5.6-6.6% in the two cereals and all their cultivars. Naked barley cultivars additionally contained the flavonoid catechin in the soluble fraction. The innoculation led here to a significant increase in the catechin content of about 4.5%. These results document an induction of the synthesis of catechin in naked barley after artificial Fusarium infection, whereas the ferulic acid content declined.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chromatography, High Pressure Liquid
  • Fusarium / pathogenicity*
  • Hordeum / metabolism*
  • Hordeum / microbiology
  • Hydrolysis
  • Mycoses / metabolism*
  • Mycoses / microbiology
  • Phenols / metabolism*
  • Tandem Mass Spectrometry

Substances

  • Phenols