Qualitative characterization of benzoxazinoid derivatives in whole grain rye and wheat by LC-MS metabolite profiling

Kati Hanhineva (Corresponding Author), Ilana Rogachev, Anna-Marja Aura, Asaph Aharoni, Kaisa Poutanen, Hannu Mykkänen

Research output: Contribution to journalArticleScientificpeer-review

56 Citations (Scopus)

Abstract

Benzoxazinoids are metabolites occurring in a restricted group of plant species including crops such as rye, wheat, and maize. Focus on the analysis of benzoxazinoid metabolites has typically been due to their importance to plant biochemistry and physiology as highly bioactive molecules that plants use as alleochemicals to defend themselves against predators and infections. However, the potential dietary contribution of these compounds has not been addressed. This study conducted a detailed qualitative characterization of benzoxazinoid metabolites present in the whole grain rye and processed fractions of rye bran, and their presence was also detected in whole grain wheat samples. Several novel benzoxazinoid metabolites of the hydroxamic acids (2,4-dihydroxy-1,4-benzoxazin-3-one, DIBOA; 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one, DIMBOA), lactams (2-hydroxy-1,4-benzoxazin-3-one, HBOA), and benzoxazolinones (1,3-benzoxazol-2-one, BOA) were identified, including double-hexose derivatives of DIBOA, DIMBOA, and HBOA. This paper presents an important addition to the information on the phytochemical composition of rye and wheat grains, which deserves attention in the discussion of the potential health-promoting effects of these grains.
Original languageEnglish
Pages (from-to)921-927
JournalJournal of Agricultural and Food Chemistry
Volume59
Issue number3
DOIs
Publication statusPublished - 7 Jan 2011
MoE publication typeA1 Journal article-refereed

Keywords

  • Rye
  • Secale cereale
  • whole grain
  • benzoxazinoids
  • phytochemicals
  • metabolite profiling
  • metabolomics
  • LC-MS

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